ANALYSES OF SAMPLES COLLECTED AT LAKE SAKAKAWEA WATER-QUALITY SITES

Table of Contents

Lake Sakakawea Van Hook Arm 1

Lake Sakakawea Van Hook Arm 2

Lake Sakakawea Van Hook Arm 3

Lake Sakakawea Van Hook Arm 4

Lake Sakakawea Van Hook Arm 5

Lake Sakakawea Van Hook Arm 6

Lake Sakakawea Van Hook Arm 7

Lake Sakakawea Van Hook Arm 8

Lake Sakakawea Van Hook Arm 9

Lake Sakakawea Van Hook Arm 10

Lake Sakakawea Van Hook Arm 11

Lake Sakakawea Deepwater Bay 1

Lake Sakakawea Deepwater Bay 2

Lake Sakakawea Deepwater Bay 3

Lake Sakakawea Deepwater Bay 4

Lake Sakakawea Deepwater Bay 5

Lake Sakakawea Deepwater Bay 6

Lake Sakakawea Near Lake Audubon

Lake Audubon Near Snake Creek Pump Plant

475516102245900 LAKE SAKAKAWEA, VAN HOOK ARM 1

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              16...       1635    22.0       .50     568      7.9       .2     14.4
                              16...       1636      --      2.2      598      8.0       .4     14.0
                              16...       1637      --      4.0      598      8.0       .4     13.8
                              16...       1638      --      5.6      600      8.0       .5     13.8
                              16...       1639      --      6.7      603      8.0       .6     13.6
                            MAY
                              19...       1010    25.6       .00     616      8.4     10.0     11.5
                              19...       1011      --      1.7      617      8.4      9.6     11.3
                              19...       1012      --      3.4      618      8.4      9.5     10.8
                              19...       1013      --      5.2      618      8.4      9.4     10.8
                              19...       1014      --      6.8      617      8.4      9.2     10.6
                              19...       1015      --      7.8      619      8.4      8.9     10.6
                            AUG
                              02...       1510    41.3       .00     619      8.3     22.4      8.7
                              02...       1511      --      2.5      619      8.2     21.5      8.4
                              02...       1512      --      5.0      617      8.2     21.2      8.2
                              02...       1513      --      7.0      621      8.2     21.1      8.2
                              02...       1514      --      9.5      619      8.2     20.9      7.9
                              02...       1515      --     12.6      627      7.9     19.9      4.6
                            SEP
                              15...       0825    34.8       .00     570      7.8     15.9      8.8
                              15...       0826      --      2.1      570      7.9     16.0      8.6
                              15...       0827      --      3.9      570      8.0     16.0      8.6
                              15...       0828      --      5.8      571      8.0     15.9      8.6
                              15...       0829      --      8.2      571      8.1     15.8      8.8
                              15...       0830      --     10.0      573      8.1     15.6      8.8
                              15...       0831      --     10.6      574      8.1     15.6      8.7


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              16...       105      721      1.70    59.0     -7.0      125     <5.0
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                            MAY
                              19...       108      722       --     51.0     18.5      180     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              02...       108      710       --     66.0     26.0       30      7.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              15...        94      718       --     83.0      9.0       45     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
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475519102240300 LAKE SAKAKAWEA, VAN HOOK ARM 2

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                DEPTH    DEPTH     PH       SPE-
                                TO TOP  TO BOT-   WATER    CIFIC    HARD-             MAGNE-   POTAS-   SODIUM
                                  OF    TOM OF    WHOLE     CON-    NESS    CALCIUM    SIUM,    SIUM,     AD-
                                SAMPLE   SAMPLE    LAB     DUCT-    TOTAL    DIS-      DIS-     DIS-    SORP-
                                INTER-   INTER-  (STAND-   ANCE     (MG/L    SOLVED   SOLVED   SOLVED    TION
              DATE      TIME   VAL(IN   VAL(IN     ARD      LAB      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM
                               METERS)  METERS)   UNITS)  (US/CM)   CACO3)   AS CA)   AS MG)   AS K)            PERCENT
                               (82047)  (82048)  (00403)  (90095)  (00900)  (00915)  (00925)  (00935)  (00931)  (00932)

          FEB
            16...       1610      .5      1.0       --      614      200      50       19        4        1       34
            16...       1615     4.5      5.0       --      613      200      49       19        4        2       34
          MAY
            19...       1000      .0       --       --      604      210      51       20        3        2       34
            19...       1005     7.1       --       --      612      210      52       20        4        2       34
          AUG
            03...       0840      .0       --       --      622      210      51       21        4        2       36
            03...       0845    11.8       --      7.7      624      210      49       20        4        2       36
          SEP
            15...       0845      .0       --      8.2      557      190      45       18        4        2       35
            15...       0850     7.8       --      8.1      556      190      47       19        4        2       37


                                 ANC                       NITRO-
                               UNFLTRD   CHLO-            GEN,AM-   NITRO-   NITRO-   NITRO-            PHOS-
                      SODIUM,  TIT 4.5   RIDE,   SULFATE  MONIA +    GEN,     GEN,     GEN,    NITRO-  PHORUS    PHOS-
                       DIS-      LAB     DIS-     DIS-    ORGANIC  AMMONIA  NO2+NO3  ORGANIC    GEN,     DIS-   PHORUS
                      SOLVED    (MG/L    SOLVED   SOLVED   TOTAL    TOTAL    TOTAL    TOTAL    TOTAL    SOLVED   TOTAL
              DATE     (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                       AS NA)   CACO3)   AS CL)  AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)
                      (00930)  (90410)  (00940)  (00945)  (00625)  (00610)  (00630)  (00605)  (00600)  (00666)  (00665)

          FEB
            16...       49       160      8.5      150      .10      .03      .04       .07     .14      .05      .07
            16...       49       160      8.6      150      .14      .02      .03       .12     .17     <.01      .07
          MAY
            19...       50       160      8.7      150      .19     <.01      .02       --      .21     <.01      .02
            19...       51       160      8.8      160      .21     <.01      .02       --      .23     <.01      .05
          AUG
            03...       56       160      8.6      160      .14     <.01      .03       --      .17     <.01     <.02
            03...       54       160      8.6      160      .20     <.01      .04       --      .24     <.01     <.02
          SEP
            15...       48       130      7.6      140      .17     <.01      .11       --      .28     <.01     <.02
            15...       55       140      7.5      140      .17     <.01      .11       --      .28      .02     <.02


                           SOLIDS,  CHLOR-A  CHLOR-B
                           SUM OF    PHYTO-   PHYTO-  ALUMI-                               BERYL-
                           CONSTI-   PLANK-   PLANK-    NUM,    ANTI-            BARIUM,    LIUM   BORON,   CADMIUM
                           TUENTS,    TON      TON     TOTAL    MONY,   ARSENIC   TOTAL    TOTAL    TOTAL    TOTAL
                             DIS-   CHROMO   CHROMO   RECOVER   TOTAL    TOTAL   RECOVER  RECOVER  RECOVER  RECOVER
                   DATE     SOLVED  FLUOROM  FLUOROM   -ABLE    (UG/L    (UG/L    -ABLE    -ABLE    -ABLE    -ABLE
                            (MG/L)   (UG/L)   (UG/L)   (UG/L)   AS SB)   AS AS)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                           (70301)  (70953)  (70954)  (01104)  (01097)  (01002)  (01009)  (00998)  (00999)  (01113)

               FEB
                 16...       372     <3.0     <1.0      <50      <1        3       57       <1       150      <1
                 16...       372       --       --      <50      <1        3       56       <1       150      <1
               MAY
                 19...       387     <3       <1         51      <1        2       59       <1       140      <1
                 19...       390       --       --      <50      <1        2       63       <1       140      <1
               AUG
                 03...       392     <3.0     <1.0      <50      <1       <1       60       <1       140      <1
                 03...       386       --       --      <50      <1        3       58       <1       140      <1
               SEP
                 15...       341     <3.0     <1.0      <50      <1        2       51       <1       140      <1
                 15...       352       --       --      170      <1        3       52       <1       170      <1


                                                                                                    THAL-
                            CHRO-             IRON,            MANGAN-                              LIUM,
                            MIUM,   COPPER,   TOTAL    LEAD,     ESE    NICKEL,   SELE-   SILVER,   TOTAL    ZINC,
                            TOTAL    TOTAL    RECOV-   TOTAL    TOTAL    TOTAL    NIUM,    TOTAL    RECOV-   TOTAL
                           RECOVER  RECOVER   ERABLE  RECOVER  RECOVER  RECOVER   TOTAL   RECOVER   ERABLE  RECOVER
                   DATE     -ABLE    -ABLE    (UG/L    -ABLE   - ABLE    -ABLE    (UG/L    -ABLE    (UG/L    -ABLE
                            (UG/L)   (UG/L)   AS FE)   (UG/L)   (UG/L)   (UG/L)   AS SE)   (UG/L)   AS TL)   (UG/L)
                           (01118)  (01119)  (01045)  (01114)  (01123)  (01074)  (01147)  (01079)  (01128)  (01094)

               FEB
                 16...       <1        2        <7      <1        <2       3       <1       <1       <1        7
                 16...       <1        2        <7      <1        <2       3       <1       <1       <1        7
               MAY
                 19...       <1        4        33      <1        <2       3       <1       <1       <1        7
                 19...       <1        2       210      <1        <2       4       <1       <1       <1        3
               AUG
                 03...       <1        2        <7      <1        <2       3       <1       <1       <1       10
                 03...       <1        1        12      <1        <2       3        2       <1       <1       10
               SEP
                 15...       <1        1       <10      <1       <10       2       <1       <1       <1        6
                 15...       <1        3       <10      <1       <10       3       <1       <1       <1       24

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              16...       1605    16.4       .50     595      8.0       .2     14.5
                              16...       1606      --      2.0      591      8.0       .3     13.8
                              16...       1607      --      4.2      594      8.0       .5     13.7
                              16...       1608      --      5.0      595      8.0       .7     13.6
                            MAY
                              19...       0955    23.3       .00     616      8.4      9.8     11.4
                              19...       0956      --      1.9      614      8.4      9.6     11.2
                              19...       0957      --      4.2      617      8.4      9.6     10.9
                              19...       0958      --      6.0      617      8.4      9.5     10.8
                              19...       0959      --      7.1      619      8.4      9.5     10.8
                            AUG
                              03...       0830    38.7       .00     621      8.2     21.0      8.5
                              03...       0831      --      2.4      621      8.2     21.0      8.4
                              03...       0832      --      4.7      622      8.2     21.0      8.3
                              03...       0833      --      7.3      621      8.2     20.9      8.2
                              03...       0834      --     10.2      633      8.2     20.7      7.9
                              03...       0835      --     11.8      619      7.8     18.8      3.9
                            SEP
                              15...       0840    25.6       .00     563      8.2     16.0      8.8
                              15...       0841      --      2.2      574      8.2     16.0      8.6
                              15...       0842      --      3.9      573      8.2     16.0      8.7
                              15...       0843      --      6.2      570      8.2     16.0      8.6
                              15...       0844      --      7.8      566      8.2     16.0      8.6


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              16...       106      721      1.80    92.0     -7.0      125     <5.0
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                            MAY
                              19...       106      722       --     55.0     21.0      280     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              03...       102      718       --     98.0     17.0      330     <5.0
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                            SEP
                              15...        95      718       --     48.0     10.0       45     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
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475530102225400 LAKE SAKAKAWEA, VAN HOOK ARM 3

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              16...       1545    49.9       .50     595      8.0       .3     14.1
                              16...       1546      --      2.1      593      8.0       .4     13.9
                              16...       1547      --      4.5      590      8.0       .4     13.6
                              16...       1548      --      6.8      586      8.0       .6     13.2
                              16...       1549      --      9.8      585      8.0      1.0     12.9
                              16...       1550      --     13.0      595      8.0      1.4     12.3
                              16...       1551      --     15.2      595      7.9      2.0     11.4
                            MAY
                              19...       0935    54.0       .00     618      8.5     10.3     11.6
                              19...       0936      --      2.6      619      8.5      9.9     11.5
                              19...       0937      --      4.9      618      8.4      9.8     11.3
                              19...       0938      --      7.5      618      8.4      9.7     11.1
                              19...       0939      --      9.9      617      8.4      9.3     11.0
                              19...       0940      --     12.4      615      8.4      9.1     10.6
                              19...       0945      --     14.9      616      8.3      8.9     10.4
                              19...       0946      --     16.6      611      8.3      8.5     10.2
                            AUG
                              02...       1530    61.0       .00     616      8.2     21.6      8.4
                              02...       1531      --      2.5      617      8.2     21.4      8.3
                              02...       1532      --      4.9      622      8.2     20.9      8.1
                              02...       1533      --      7.5      619      8.2     20.6      7.1
                              02...       1534      --      9.9      616      8.2     20.5      7.8
                              02...       1535      --     12.3      616      7.9     18.9      6.0
                              02...       1536      --     15.0      625      7.8     17.6      4.8
                              02...       1537      --     18.6      619      7.7     16.0      4.6
                            SEP
                              15...       0850    58.1       .00     570      8.2     16.1      8.6
                              15...       0851      --      2.1      571      8.2     16.1      8.6
                              15...       0852      --      3.8      566      8.2     16.1      8.5
                              15...       0853      --      5.8      569      8.2     16.1      8.5
                              15...       0854      --      7.8      570      8.2     16.1      8.5
                              15...       0855      --     10.0      567      8.2     16.1      8.4
                              15...       0856      --     12.1      566      8.2     16.1      8.4
                              15...       0857      --     13.9      569      8.2     16.1      8.4
                              15...       0858      --     15.9      570      8.2     15.9      8.6
                              15...       0859      --     17.7      573      8.2     15.8      8.6

                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              16...       103      721      1.60    54.0     -5.0      140     <5.0
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                            MAY
                              19...       109      722       --     55.0     15.5      180     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              02...       103      711       --     74.0     24.5       20      6.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              15...        93      718       --     48.0     10.0       45     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
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475524102213100 LAKE SAKAKAWEA, VAN HOOK ARM 4

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                DEPTH    DEPTH     PH       SPE-
                                TO TOP  TO BOT-   WATER    CIFIC    HARD-             MAGNE-   POTAS-   SODIUM
                                  OF    TOM OF    WHOLE     CON-    NESS    CALCIUM    SIUM,    SIUM,     AD-
                                SAMPLE   SAMPLE    LAB     DUCT-    TOTAL    DIS-      DIS-     DIS-    SORP-
                                INTER-   INTER-  (STAND-   ANCE     (MG/L    SOLVED   SOLVED   SOLVED    TION
              DATE      TIME   VAL(IN   VAL(IN     ARD      LAB      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM
                               METERS)  METERS)   UNITS)  (US/CM)   CACO3)   AS CA)   AS MG)   AS K)            PERCENT
                               (82047)  (82048)  (00403)  (90095)  (00900)  (00915)  (00925)  (00935)  (00931)  (00932)

          FEB
            16...       1440      .4       .9      7.7      612      190      47       18        3        1       34
            16...       1445    17.1     17.6      7.2      615      200      50       19        4        1       34
          MAY
            19...       0850      .0       --      8.0      615      210      52       21        4        2       36
            19...       0855     8.0       --      7.6      606      210      52       20        4        2       34
          AUG
            03...       0900      .0       --      7.2      623      200      49       20        4        2       36
            03...       0910    11.0       --      6.9      624      210      50       20        4        2       36
            03...       0915    19.5       --      6.8      620      210      49       20        4        2       36
          SEP
            15...       0920      .0       --      8.2      559      180      45       18        3        2       35
            15...       0925    19.2       --      8.2      560      190      45       18        4        2       35


                                 ANC                       NITRO-
                               UNFLTRD   CHLO-            GEN,AM-   NITRO-   NITRO-   NITRO-            PHOS-
                      SODIUM,  TIT 4.5   RIDE,   SULFATE  MONIA +    GEN,     GEN,     GEN,    NITRO-  PHORUS    PHOS-
                       DIS-      LAB     DIS-     DIS-    ORGANIC  AMMONIA  NO2+NO3  ORGANIC    GEN,     DIS-   PHORUS
                      SOLVED    (MG/L    SOLVED   SOLVED   TOTAL    TOTAL    TOTAL    TOTAL    TOTAL    SOLVED   TOTAL
              DATE     (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                       AS NA)   CACO3)   AS CL)  AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)
                      (00930)  (90410)  (00940)  (00945)  (00625)  (00610)  (00630)  (00605)  (00600)  (00666)  (00665)

          FEB
            16...       46       160      8.4      140      .11      .02      .04       .09      .15    <.01      .07
            16...       49       160      8.4      140      .12      .04      .07       .09      .19    <.01      .09
          MAY
            19...       56       160      8.7      160      .19     <.01     <.02       --       --     <.01      .03
            19...       52       160      8.6      160      .23     <.01      .06       --       .29    <.01      .02
          AUG
            03...       54       160      8.6      160      .13     <.01      .04       --       .17    <.01      .02
            03...       54       160      8.6      160      .15     <.01      .18       --       .33    <.01      .03
            03...       54       160      8.5      160      .22     <.01      .05       --       .27    <.01     <.02
          SEP
            15...       48       130      7.5      140      .14     <.01      .11       --       .25     .01     <.02
            15...       48       130      7.4      140      .16     <.01      .12       --       .28    <.01      .03


                           SOLIDS,  CHLOR-A  CHLOR-B
                           SUM OF    PHYTO-   PHYTO-  ALUMI-                               BERYL-
                           CONSTI-   PLANK-   PLANK-    NUM,    ANTI-            BARIUM,    LIUM   BORON,   CADMIUM
                           TUENTS,    TON      TON     TOTAL    MONY,   ARSENIC   TOTAL    TOTAL    TOTAL    TOTAL
                             DIS-   CHROMO   CHROMO   RECOVER   TOTAL    TOTAL   RECOVER  RECOVER  RECOVER  RECOVER
                   DATE     SOLVED  FLUOROM  FLUOROM   -ABLE    (UG/L    (UG/L    -ABLE    -ABLE    -ABLE    -ABLE
                            (MG/L)   (UG/L)   (UG/L)   (UG/L)   AS SB)   AS AS)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                           (70301)  (70953)  (70954)  (01104)  (01097)  (01002)  (01009)  (00998)  (00999)  (01113)

               FEB
                 16...       362     <3.0     <1.0      <50      <1        3       55       <1       140      <1
                 16...       371       --       --      <50      <1        3       58       <1       160      <1
               MAY
                 19...       399      3.0     <1.0      <50      <1        2       61       <1       140      <1
                 19...       389       --       --       59      <1        2       62       <1       140      <1
               AUG
                 03...       385     <3.0     <1.0      <50      <1       <1       57       <1       140      <1
                 03...       388       --       --      <50      <1        2       58       <1       150      <1
                 03...       388       --       --      <50      <1        2       56       <1       140      <1
               SEP
                 15...       339     <3.0     <1.0      <50      <1        2       51       <1       140      <1
                 15...       340       --       --      <50      <1        2       50       <1       150      <1

                                                                                                    THAL-
                            CHRO-             IRON,            MANGAN-                              LIUM,
                            MIUM,   COPPER,   TOTAL    LEAD,     ESE    NICKEL,   SELE-   SILVER,   TOTAL    ZINC,
                            TOTAL    TOTAL    RECOV-   TOTAL    TOTAL    TOTAL    NIUM,    TOTAL    RECOV-   TOTAL
                           RECOVER  RECOVER   ERABLE  RECOVER  RECOVER  RECOVER   TOTAL   RECOVER   ERABLE  RECOVER
                   DATE     -ABLE    -ABLE    (UG/L    -ABLE   - ABLE    -ABLE    (UG/L    -ABLE    (UG/L    -ABLE
                            (UG/L)   (UG/L)   AS FE)   (UG/L)   (UG/L)   (UG/L)   AS SE)   (UG/L)   AS TL)   (UG/L)
                           (01118)  (01119)  (01045)  (01114)  (01123)  (01074)  (01147)  (01079)  (01128)  (01094)

               FEB
                 16...       <1        2        <7      <1        <2       3       <1       <1       <1        7
                 16...       <1        2        <7      <1        <2       4        1       <1       <1        8
               MAY
                 19...       <1        1        <7      <1        <2       3       <1       <1       <1        5
                 19...       <1        1        <7      <1        10       3       <1       <1       <1        5
               AUG
                 03...       <1        5        <7      <1        <2       3       <1       <1       <1        9
                 03...       <1        1        <7      <1        <2       3        1       <1       <1       10
                 03...       <1        1        <7      <1        <2       2        1       <1       <1       10
               SEP
                 15...       <1        1       <10      <1       <10       2       <1       <1       <1        6
                 15...       <1        1       <10      <1       <10       2       <1       <1       <1        7


                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              16...       1430    57.7       .40     590      7.7       .6     13.4
                              16...       1431      --      1.9      583      7.8       .6     13.2
                              16...       1432      --      4.2      582      7.8       .6     13.0
                              16...       1433      --      7.0      584      7.9       .8     12.8
                              16...       1434      --      9.3      580      7.9       .9     12.9
                              16...       1435      --     12.6      585      7.9      1.4     12.5
                              16...       1436      --     15.2      600      7.8      1.9     11.3
                              16...       1437      --     17.6      600      7.7      3.5      6.2
                            MAY
                              19...       0840    61.7       .00     633      8.3     10.4     11.3
                              19...       0841      --      3.0      631      8.3     10.1     11.3
                              19...       0842      --      5.9      623      8.3      9.8     11.0
                              19...       0843      --      9.1      628      9.3      9.8     10.8
                              19...       0844      --     12.1      617      8.3      9.1     10.8
                              19...       0845      --     14.8      618      8.2      8.2     10.4
                              19...       0846      --     17.8      618      8.2      8.1      9.8
                              19...       0847      --     18.8      619      8.2      8.0      9.6
                            AUG
                              03...       0850    64.0       .00     619      8.2     20.4      8.2
                              03...       0851      --      2.5      618      8.2     20.4      8.1
                              03...       0852      --      5.0      620      8.2     20.4      8.1
                              03...       0853      --      7.4      620      8.2     20.4      8.1
                              03...       0854      --     10.2      613      8.1     20.2      7.5
                              03...       0855      --     12.4      619      7.9     18.6      5.5
                              03...       0856      --     15.0      611      7.8     17.9      5.2
                              03...       0857      --     17.4      625      7.7     16.9      4.6
                              03...       0858      --     19.5      626      7.7     15.9      3.9
                            SEP
                              15...       0905    63.0       .00     570      8.2     16.2      8.6
                              15...       0906      --      2.1      561      8.2     16.2      8.5
                              15...       0907      --      3.9      577      8.2     16.2      8.5
                              15...       0908      --      6.1      573      8.2     16.2      8.4
                              15...       0909      --      8.1      570      8.2     16.2      8.4
                              15...       0910      --      9.9      576      8.2     16.2      8.4
                              15...       0911      --     11.8      582      8.2     16.2      8.4
                              15...       0912      --     14.0      575      8.2     16.2      8.4
                              15...       0913      --     15.9      573      8.2     16.2      8.4
                              15...       0914      --     17.9      568      8.2     16.2      8.4
                              15...       0915      --     19.2      562      8.2     16.2      8.3

                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              16...        99      720      1.40    59.0      3.0       60     <5.0
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                            MAY
                              19...       107      722       --     51.0     16.0      160     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              03...        96      718       --     70.0     17.0      300     <5.0
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                            SEP
                              15...        93      718       --     44.0     10.0       45     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
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475519102195500 LAKE SAKAKAWEA, VAN HOOK ARM 5

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              16...       1305    16.4       .50     599      7.8       .6     14.6
                              16...       1306      --      2.6      596      7.9       .5     13.9
                              16...       1307      --      4.3      591      7.9       .6     13.5
                              16...       1308      --      5.0      592      7.9       .6     13.2
                            MAY
                              19...       0915    31.2       .00     618      8.5     10.7     12.0
                              19...       0916      --      2.5      619      8.5     10.1     11.7
                              19...       0917      --      4.6      621      8.4     10.0     11.4
                              19...       0918      --      7.2      624      8.4     10.0     11.2
                              19...       0919      --      9.5      631      8.4     10.0     11.1
                            AUG
                              02...       1555    34.8       .00     622      8.2     20.7      8.3
                              02...       1556      --      2.4      621      8.2     20.6      8.2
                              02...       1557      --      5.0      620      8.1     20.0      7.6
                              02...       1558      --      7.4      620      8.1     19.8      7.3
                              02...       1559      --     10.1      622      7.8     17.9      4.5
                              02...       1600      --     10.6      621      7.8     17.9      4.5
                            SEP
                              15...       0925    32.1       .00     570      8.2     15.8      8.7
                              15...       0926      --      2.2      570      8.2     15.8      8.6
                              15...       0927      --      3.9      570      8.2     15.8      8.5
                              15...       0928      --      5.9      579      8.3     15.0      9.1
                              15...       0929      --      7.8      581      8.3     14.8      9.0
                              15...       0930      --      9.8      583      8.3     14.7      9.0


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              16...       108      720      1.60    87.0     -7.0       60     <5.0
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                              16...        --       --       --       --       --       --       --
                            MAY
                              19...       114      722       --     51.0     16.0      180     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              02...        99      712       --     42.0     24.5       30      7.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              15...        93      718       --     51.0     10.0       45     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
Go to Table of Contents

475304102195400 LAKE SAKAKAWEA, VAN HOOK ARM 6

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1140    39.4       .70     589      7.7       .7     13.9
                              17...       1141      --      2.2      590      7.8       .3     13.9
                              17...       1142      --      4.2      590      7.9       .3     13.7
                              17...       1143      --      6.9      585      7.9       .4     13.5
                              17...       1144      --     10.0      587      7.9       .8     12.9
                              17...       1145      --     12.0      588      7.9      1.2     12.5
                            MAY
                              19...       1050    42.3       .00     617      8.5      9.5     11.7
                              19...       1051      --      2.7      617      8.5      9.3     11.4
                              19...       1052      --      5.1      614      8.4      9.2     11.1
                              19...       1053      --      7.7      620      8.4      9.2     11.1
                              19...       1054      --      9.7      619      8.4      9.2     11.0
                              19...       1055      --     12.3      619      8.4      8.8     10.7
                              19...       1056      --     12.9      620      8.4      8.6     10.5
                            AUG
                              03...       1130    49.2       .00     611      8.3     21.4      8.4
                              03...       1131      --      3.0      615      8.3     21.0      8.3
                              03...       1132      --      5.9      609      8.3     20.9      8.1
                              03...       1133      --      8.8      610      8.2     20.8      8.1
                              03...       1134      --     11.9      609      8.1     18.8      6.9
                              03...       1135      --     15.0      632      8.0     18.1      6.3
                            SEP
                              15...       1130    47.9       .00     571      8.2     16.4      8.7
                              15...       1131      --      2.8      574      8.2     16.2      8.6
                              15...       1132      --      4.9      577      8.2     16.1      8.5
                              15...       1133      --      7.5      572      8.2     16.1      8.4
                              15...       1134      --     10.0      564      8.2     16.1      8.4
                              15...       1135      --     12.4      571      8.2     16.0      8.3
                              15...       1136      --     14.6      573      8.2     15.8      8.3


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       105      712      2.20    114      -6.0      125     10
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              19...       108      722       --      67.0    14.5      180     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              03...       101      717       --     148      26.0       45     <5.0
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                            SEP
                              15...        95      717       --      49.0    15.0      165     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
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475301102220100 LAKE SAKAKAWEA, VAN HOOK ARM 7

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                DEPTH    DEPTH     PH       SPE-
                                TO TOP  TO BOT-   WATER    CIFIC    HARD-             MAGNE-   POTAS-   SODIUM
                                  OF    TOM OF    WHOLE     CON-    NESS    CALCIUM    SIUM,    SIUM,     AD-
                                SAMPLE   SAMPLE    LAB     DUCT-    TOTAL    DIS-      DIS-     DIS-    SORP-
                                INTER-   INTER-  (STAND-   ANCE     (MG/L    SOLVED   SOLVED   SOLVED    TION
              DATE      TIME   VAL(IN   VAL(IN     ARD      LAB      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM
                               METERS)  METERS)   UNITS)  (US/CM)   CACO3)   AS CA)   AS MG)   AS K)            PERCENT
                               (82047)  (82048)  (00403)  (90095)  (00900)  (00915)  (00925)  (00935)  (00931)  (00932)

          FEB
            17...       1210      .5      1.0      7.6      615      200      49       19        4        1       34
            17...       1215    13.2     13.7      7.4      611      200      48       18        3        1       34
          MAY
            19...       1120      .0       --       --      611      210      51       20        3        1       34
            19...       1125    17.4       --       --      610      210      52       20        4        2       34
          AUG
            03...       1115      .0       --       --      617      200      49       20        4        2       36
            03...       1120    13.0       --       --      615      200      47       19        4        2       36
            03...       1125    20.2       --       --      623      210      49       20        4        2       36
          SEP
            15...       1125      .0       --      8.2      558      180      44       17        3        2       35
            15...       1130    17.5       --      8.2      563      190      46       18        4        2       35


                                 ANC                       NITRO-
                               UNFLTRD   CHLO-            GEN,AM-   NITRO-   NITRO-   NITRO-            PHOS-
                      SODIUM,  TIT 4.5   RIDE,   SULFATE  MONIA +    GEN,     GEN,     GEN,    NITRO-  PHORUS    PHOS-
                       DIS-      LAB     DIS-     DIS-    ORGANIC  AMMONIA  NO2+NO3  ORGANIC    GEN,     DIS-   PHORUS
                      SOLVED    (MG/L    SOLVED   SOLVED   TOTAL    TOTAL    TOTAL    TOTAL    TOTAL    SOLVED   TOTAL
              DATE     (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                       AS NA)   CACO3)   AS CL)  AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)
                      (00930)  (90410)  (00940)  (00945)  (00625)  (00610)  (00630)  (00605)  (00600)  (00666)  (00665)

          FEB
            17...       48       160      8.4      150      .09      .02      .04       .07     .13     <.01      .07
            17...       48       160      8.4      140      .16      .03      .03       .13     .19      .01      .10
          MAY
            19...       50       160      8.7      150      .18     <.01      .04       --      .22     <.01      .03
            19...       52       160      8.7      150      .21     <.01      .07       --      .28     <.01      .04
          AUG
            03...       53       160      8.5      160      .14     <.01      .04       --      .18     <.01     <.02
            03...       52       160      8.4      160      .20     <.01      .06       --      .27     <.01     <.02
            03...       54       160      8.6      160      .22     <.01      .16       --      .38     <.01      .02
          SEP
            15...       46       130      7.5      140      .14     <.01      .11       --      .25     <.01     <.02
            15...       49       130      7.5      140      .16     <.01      .12       --      .28     <.01     <.02


                           SOLIDS,  CHLOR-A  CHLOR-B
                           SUM OF    PHYTO-   PHYTO-  ALUMI-                               BERYL-
                           CONSTI-   PLANK-   PLANK-    NUM,    ANTI-            BARIUM,    LIUM   BORON,   CADMIUM
                           TUENTS,    TON      TON     TOTAL    MONY,   ARSENIC   TOTAL    TOTAL    TOTAL    TOTAL
                             DIS-   CHROMO   CHROMO   RECOVER   TOTAL    TOTAL   RECOVER  RECOVER  RECOVER  RECOVER
                   DATE     SOLVED  FLUOROM  FLUOROM   -ABLE    (UG/L    (UG/L    -ABLE    -ABLE    -ABLE    -ABLE
                            (MG/L)   (UG/L)   (UG/L)   (UG/L)   AS SB)   AS AS)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                           (70301)  (70953)  (70954)  (01104)  (01097)  (01002)  (01009)  (00998)  (00999)  (01113)

               FEB
                 17...       369     <3.0     <1.0      <50      <1        3       59       <1       150      <1
                 17...       367       --       --      <50      <1        3       58       <1       150      <1
               MAY
                 19...       385     <3.0     <1.0      <50      <1        2       61       <1       140      <1
                 19...       387       --       --      <50      <1        2       62       <1       130      <1
               AUG
                 03...       382     <3.0     <1.0      <50      <1       <1       61       <1       140      <1
                 03...       382       --       --      <50      <2        2       60       <1       140      <1
                 03...       386       --       --      <50      <2       <1       62       <1       150      <1
               SEP
                 15...       338     <3.0     <1.0      <50      <1        3       49       <1       140      <1
                 15...       343       --       --      <50      <1        2       51       <1       140      <1

                                                                                                    THAL-
                            CHRO-             IRON,            MANGAN-                              LIUM,
                            MIUM,   COPPER,   TOTAL    LEAD,     ESE    NICKEL,   SELE-   SILVER,   TOTAL    ZINC,
                            TOTAL    TOTAL    RECOV-   TOTAL    TOTAL    TOTAL    NIUM,    TOTAL    RECOV-   TOTAL
                           RECOVER  RECOVER   ERABLE  RECOVER  RECOVER  RECOVER   TOTAL   RECOVER   ERABLE  RECOVER
                   DATE     -ABLE    -ABLE    (UG/L    -ABLE   - ABLE    -ABLE    (UG/L    -ABLE    (UG/L    -ABLE
                            (UG/L)   (UG/L)   AS FE)   (UG/L)   (UG/L)   (UG/L)   AS SE)   (UG/L)   AS TL)   (UG/L)
                           (01118)  (01119)  (01045)  (01114)  (01123)  (01074)  (01147)  (01079)  (01128)  (01094)

               FEB
                 17...       <1        2        <7      <1        <2       3        1       <1       <1        8
                 17...       <1        2        <7      <1        <2       3       <1       <1       <1       10
               MAY
                 19...       <1        3        48      <1        <2       3       <1       <1       <1        5
                 19...       <1        3        39      <1        <2       3       <1       <1       <1        6
               AUG
                 03...       <1        2        <7      <1        <2       2       <1       <1       <1       10
                 03...       <1        1        <7      <1        <2       2        1       <1       <1        7
                 03...       <1        1        <7      <1        <2       4       <1       <1       <1       10
               SEP
                 15...       <1        1       <10      <1       <10       2       <1       <1       <1        8
                 15...       <1        2       <10      <1       <10       2       <1       <1       <1        6


                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1200    44.9       .50     593      7.5       .3     14.1
                              17...       1201      --      2.7      596      7.7       .4     13.9
                              17...       1202      --      5.3      600      7.8       .3     13.7
                              17...       1203      --      7.7      596      7.9       .6     13.2
                              17...       1204      --      9.8      585      7.9       .8     13.0
                              17...       1205      --     13.1      600      7.9      1.3     12.3
                              17...       1206      --     13.7      600      7.9      1.4     12.2
                            MAY
                              19...       1110    57.1       .00     614      8.5     10.1     11.5
                              19...       1111      --      2.8      618      8.5      9.0     11.3
                              19...       1112      --      5.3      617      8.4      8.9     11.1
                              19...       1113      --      7.8      617      8.4      8.8     11.0
                              19...       1114      --     10.0      618      8.4      8.6     10.7
                              19...       1115      --     12.3      620      8.4      8.2     10.4
                              19...       1116      --     14.4      620      8.3      8.1     10.2
                              19...       1117      --     16.8      619      8.3      7.9     10.2
                              19...       1118      --     17.4      620      8.3      7.8      9.9
                            AUG
                              03...       1105    66.3       .00     608      8.3     21.6      8.3
                              03...       1106      --      2.9      611      8.3     21.1      8.3
                              03...       1107      --      6.0      616      8.3     20.9      8.1
                              03...       1108      --      9.1      609      8.2     20.7      7.9
                              03...       1109      --     12.0      613      8.2     20.0      7.3
                              03...       1110      --     15.1      615      7.9     17.0      5.4
                              03...       1111      --     17.8      616      7.8     16.3      5.5
                              03...       1112      --     20.2      624      7.7     15.3      4.9
                            SEP
                              15...       1115    57.4       .00     566      8.2     16.4      8.5
                              15...       1116      --      2.3      570      8.2     16.2      8.3
                              15...       1117      --      4.8      579      8.2     16.2      8.2
                              15...       1118      --      7.4      579      8.2     16.2      8.2
                              15...       1119      --     10.1      566      8.2     16.2      8.2
                              15...       1120      --     12.5      575      8.2     16.2      8.1
                              15...       1121      --     14.8      570      8.2     16.2      8.1
                              15...       1122      --     17.5      588      8.2     16.2      8.1

                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       104      712      1.64     79.0    -7.0      125      7.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              19...       107      723       --      67.0    17.5      180     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              03...       101      717       --     166      22.5       45     <5.0
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                            SEP
                              15...        92      717       --      44.0    14.0      135     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
Go to Table of Contents

475303102233200 LAKE SAKAKAWEA, VAN HOOK ARM 8

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1110    27.2       .50     592      7.6       .3     13.9
                              17...       1111      --      2.7      590      7.8       .3     13.8
                              17...       1112      --      5.6      586      7.9       .6     13.4
                              17...       1113      --      8.1      590      7.9       .8     13.2
                              17...       1114      --      8.3      591      7.9       .8     13.2
                            MAY
                              19...       1130    34.8       .00     615      8.5     10.2     11.7
                              19...       1131      --      2.6      617      8.5      9.6     11.6
                              19...       1132      --      5.4      619      8.4      9.1     11.1
                              19...       1133      --      7.8      620      8.4      8.7     10.7
                              19...       1134      --      9.8      619      8.4      8.5     10.5
                              19...       1135      --     10.6      622      8.4      8.5     10.4
                            AUG
                              03...       1055    36.1       .00     615      8.3     21.5      8.3
                              03...       1056      --      3.0      610      8.3     21.2      8.2
                              03...       1057      --      6.1      614      8.3     21.2      8.1
                              03...       1058      --      9.0      622      8.3     21.1      8.1
                              03...       1059      --     11.0      610      8.2     20.9      7.6
                            SEP
                              15...       1100    30.5       .00     570      8.2     16.3      8.6
                              15...       1101      --      2.1      571      8.2     16.2      8.5
                              15...       1102      --      4.0      571      8.2     16.1      8.4
                              15...       1103      --      5.9      570      8.2     16.1      8.4
                              15...       1104      --      8.1      570      8.2     16.1      8.4
                              15...       1105      --      9.3      570      8.2     16.1      8.3


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       103      712      1.70     87.0    -6.0      150      5.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              19...       110      723       --      55.0    19.0      180     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              03...       100      717       --     107      20.5       45     <5.0
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                            SEP
                              15...        93      717       --      47.0    13.0      130     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
Go to Table of Contents

475054102213300 LAKE SAKAKAWEA, VAN HOOK ARM 9

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       0940    75.4       .60     607      7.7       .8     13.8
                              17...       0941      --      2.6      585      7.8       .5     13.8
                              17...       0942      --      5.7      591      7.9       .4     13.5
                              17...       0943      --      9.4      583      7.9      1.0     13.0
                              17...       0944      --     13.1      590      7.8      1.4     12.4
                              17...       0945      --     17.0      590      7.8      1.9     11.4
                              17...       0946      --     19.7      592      7.7      2.3     10.1
                              17...       0947      --     23.0      622       --      3.3      5.6
                            MAY
                              19...       1145    79.5       .00     617      8.5      9.2     11.4
                              19...       1146      --      3.0      619      8.4      8.7     11.2
                              19...       1147      --      6.0      619      8.4      8.6     11.1
                              19...       1148      --      8.9      616      8.4      8.4     10.9
                              19...       1149      --     11.6      618      8.4      8.3     10.8
                              19...       1150      --     15.0      618      8.4      8.2     10.6
                              19...       1151      --     18.1      617      8.3      7.9     10.5
                              19...       1152      --     20.9      615      8.3      7.9     10.3
                              19...       1153      --     24.2      607      8.3      7.8     10.2
                            AUG
                              03...       1030    85.0       .00     595      8.3     21.7      8.4
                              03...       1031      --      3.0      596      8.4     21.6      8.4
                              03...       1032      --      5.9      597      8.3     21.5      8.2
                              03...       1033      --      9.1      590      8.3     21.5      8.2
                              03...       1034      --     11.9      607      8.2     20.0      7.2
                              03...       1035      --     15.2      639      8.0     16.9      6.5
                              03...       1036      --     18.1      627      7.9     15.8      6.0
                              03...       1037      --     21.2      622      7.8     14.9      5.3
                              03...       1038      --     24.2      643      7.8     13.8      5.0
                              03...       1039      --     25.9      625      7.7     13.4      3.6
                            SEP
                              15...       1040    83.3       .00     569      8.2     16.2      8.2
                              15...       1041      --      2.9      571      8.2     16.2      8.1
                              15...       1042      --      5.8      572      8.2     16.2      8.1
                              15...       1043      --      8.9      572      8.2     16.2      8.1
                              15...       1044      --     12.0      572      8.2     16.2      8.1
                              15...       1045      --     15.1      572      8.2     16.2      8.0
                              15...       1046      --     18.2      572      8.2     16.2      8.0
                              15...       1047      --     20.9      572      8.2     16.2      8.0
                              15...       1048      --     24.0      574      8.1     16.2      7.8
                              15...       1049      --     25.4      574      8.1     16.2      7.8

                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       104      712      1.80     51.0    -7.0      130      8.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              19...       105      723       --      75.0    15.0      150     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              03...       102      718       --     126      19.5      325     <5.0
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                            SEP
                              15...        89      718       --      44.0    12.0      160     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
Go to Table of Contents

475100102203300 LAKE SAKAKAWEA, VAN HOOK ARM 10

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                DEPTH    DEPTH     PH       SPE-
                                TO TOP  TO BOT-   WATER    CIFIC    HARD-             MAGNE-   POTAS-   SODIUM
                                  OF    TOM OF    WHOLE     CON-    NESS    CALCIUM    SIUM,    SIUM,     AD-
                                SAMPLE   SAMPLE    LAB     DUCT-    TOTAL    DIS-      DIS-     DIS-    SORP-
                                INTER-   INTER-  (STAND-   ANCE     (MG/L    SOLVED   SOLVED   SOLVED    TION
              DATE      TIME   VAL(IN   VAL(IN     ARD      LAB      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM
                               METERS)  METERS)   UNITS)  (US/CM)   CACO3)   AS CA)   AS MG)   AS K)            PERCENT
                               (82047)  (82048)  (00403)  (90095)  (00900)  (00915)  (00925)  (00935)  (00931)  (00932)

          FEB
            17...       1030      .6      1.1      7.6      616      190      48       18        3        1       34
            17...       1035    19.0     19.5      7.7      617      200      49       19        3        1       34
          MAY
            19...       1220      .0       --      8.0      603      210      51       20        4        2       34
            19...       1225    20.8       --      7.7      592      210      50       20        4        2       35
          AUG
            03...       1015      .0       --      7.4      573      190      47       19        3        2       35
            03...       1020    12.0       --      8.0      537      170      41       16        3        1       35
            03...       1025    16.8       --      7.1      542      180      44       17        3        1       35
          SEP
            15...       1030      .0       --      8.1      564      180      45       18        3        2       36
            15...       1035    17.5       --      8.1      560      180      45       18        3        2       35


                                 ANC                       NITRO-
                               UNFLTRD   CHLO-            GEN,AM-   NITRO-   NITRO-   NITRO-            PHOS-
                      SODIUM,  TIT 4.5   RIDE,   SULFATE  MONIA +    GEN,     GEN,     GEN,    NITRO-  PHORUS    PHOS-
                       DIS-      LAB     DIS-     DIS-    ORGANIC  AMMONIA  NO2+NO3  ORGANIC    GEN,     DIS-   PHORUS
                      SOLVED    (MG/L    SOLVED   SOLVED   TOTAL    TOTAL    TOTAL    TOTAL    TOTAL    SOLVED   TOTAL
              DATE     (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                       AS NA)   CACO3)   AS CL)  AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)
                      (00930)  (90410)  (00940)  (00945)  (00625)  (00610)  (00630)  (00605)  (00600)  (00666)  (00665)

          FEB
            17...       47       160      8.4      150      .45      .03      .04       .42     .49      .05      .08
            17...       48       160      8.6      150      .14      .03      .08       .11     .22      .05      .13
          MAY
            19...       51       160      8.7      160      .21     <.01      .04       --      .25     <.01      .02
            19...       52       160      8.7      160      .24     <.01      .08       --      .32     <.01     <.02
          AUG
            03...       49       150      7.7      140      .18     <.01      .06       --      .24     <.01     <.02
            03...       42       140      7.4      130      .13     <.01      .07       --      .20     <.01     <.02
            03...       45       140      7.5      130      .12     <.01      .07       --      .19     <.01     <.02
          SEP
            15...       48       140      7.5      140      .34      .03      .24       .31     .58      .03      .19
            15...       48       130      7.5      140      .15     <.01      .12       --      .27      .01      .02


                           SOLIDS,  CHLOR-A  CHLOR-B
                           SUM OF    PHYTO-   PHYTO-  ALUMI-                               BERYL-
                           CONSTI-   PLANK-   PLANK-    NUM,    ANTI-            BARIUM,    LIUM   BORON,   CADMIUM
                           TUENTS,    TON      TON     TOTAL    MONY,   ARSENIC   TOTAL    TOTAL    TOTAL    TOTAL
                             DIS-   CHROMO   CHROMO   RECOVER   TOTAL    TOTAL   RECOVER  RECOVER  RECOVER  RECOVER
                   DATE     SOLVED  FLUOROM  FLUOROM   -ABLE    (UG/L    (UG/L    -ABLE    -ABLE    -ABLE    -ABLE
                            (MG/L)   (UG/L)   (UG/L)   (UG/L)   AS SB)   AS AS)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                           (70301)  (70953)  (70954)  (01104)  (01097)  (01002)  (01009)  (00998)  (00999)  (01113)

               FEB
                 17...       367     <3.0     <1.0      <50      <1        3       56       <1       130      <1
                 17...       371       --       --      <50      <1        2       58       <1       150      <1
               MAY
                 19...       386     <3.0     <1.0      <50      <1        2       61       <1       140      <1
                 19...       382       --       --      <50      <1        2       57       <1       140      <1
               AUG
                 03...       355     <3.0     <1.0      <50      <1       <1       56       <1       130      <1
                 03...       322       --       --      <50      <2        2       54       <1       120      <1
                 03...       333       --       --      <50      <2       <1       54       <1       130      <1
               SEP
                 15...       342     <3.0     <1.0      <50      <1        2       50       <1       130      <1
                 15...       341       --       --      <50      <1        2       50       <1       140      <1

                                                                                                    THAL-
                            CHRO-             IRON,            MANGAN-                              LIUM,
                            MIUM,   COPPER,   TOTAL    LEAD,     ESE    NICKEL,   SELE-   SILVER,   TOTAL    ZINC,
                            TOTAL    TOTAL    RECOV-   TOTAL    TOTAL    TOTAL    NIUM,    TOTAL    RECOV-   TOTAL
                           RECOVER  RECOVER   ERABLE  RECOVER  RECOVER  RECOVER   TOTAL   RECOVER   ERABLE  RECOVER
                   DATE     -ABLE    -ABLE    (UG/L    -ABLE   - ABLE    -ABLE    (UG/L    -ABLE    (UG/L    -ABLE
                            (UG/L)   (UG/L)   AS FE)   (UG/L)   (UG/L)   (UG/L)   AS SE)   (UG/L)   AS TL)   (UG/L)
                           (01118)  (01119)  (01045)  (01114)  (01123)  (01074)  (01147)  (01079)  (01128)  (01094)

               FEB
                 17...       <1        2        <7      <1        <2       3       <1       <1       <1       12
                 17...       <1        2        <7      <1        <2       3       <1       <1       <1       10
               MAY
                 19...       <1        3        20      <1        <2       3       <1       <1       <1        6
                 19...       <1        3       290      <1        <2       3       <1       <1       <1        4
               AUG
                 03...       <1        1        <7      <1        <2       4       <1       <1       <1       10
                 03...       <1        1        <7      <1        <2       2       <1       <1       <1        9
                 03...       <1        1        <7      <1        <2       2       <1       <1       <1       10
               SEP
                 15...       <1        1       <10      <1       <10       2       <1       <1       <1        6
                 15...       <1        1       <10      <1       <10       3       <1       <1       <1       10


                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1020    64.3       .60     589      7.8       .3     13.8
                              17...       1021      --      3.8      588      7.8       .3     13.8
                              17...       1022      --      7.7      599      7.9       .4     13.3
                              17...       1023      --     11.0      589      7.9      1.4     12.6
                              17...       1024      --     14.9      579      7.9      1.7     11.8
                              17...       1025      --     18.4      600      7.8      2.2     10.9
                              17...       1026      --     19.6      600      7.8      2.3     10.2
                            MAY
                              19...       1210    68.3       .00     613      8.5      9.4     11.5
                              19...       1211      --      3.1      620      8.5      8.8     11.4
                              19...       1212      --      6.4      619      8.4      8.7     11.1
                              19...       1213      --      9.6      623      8.4      8.6     10.9
                              19...       1214      --     13.1      611      8.3      8.2     10.6
                              19...       1215      --     16.1      612      8.4      7.7     10.8
                              19...       1216      --     19.0      612      8.3      7.5     10.6
                              19...       1217      --     20.8      908      8.3      7.4     10.3
                            AUG
                              03...       1005    55.1       .00     535      8.2     21.5      8.3
                              03...       1006      --      3.0      533      8.2     21.4      8.1
                              03...       1007      --      6.0      534      8.2     21.4      8.2
                              03...       1008      --      9.1      591      8.2     20.6      7.7
                              03...       1009      --     12.0      603      8.1     20.0      7.3
                              03...       1010      --     14.9      631      7.9     17.8      6.0
                              03...       1011      --     16.8      617      7.9     16.4      6.0
                            SEP
                              15...       1020    57.4       .00     574      8.2     16.2      8.3
                              15...       1021      --      2.3      579      8.2     16.2      8.2
                              15...       1022      --      4.9      574      8.2     16.2      8.1
                              15...       1023      --      7.5      579      8.2     16.1      8.1
                              15...       1024      --     10.0      569      8.2     16.2      8.1
                              15...       1025      --     12.4      570      8.2     16.2      8.0
                              15...       1026      --     15.0      578      8.2     16.2      8.0
                              15...       1027      --     17.5      564      8.2     16.2      8.0

                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       102      712      1.97    114      -8.0      125     12
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              19...       106      723       --      71.0    18.0      160     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              03...       100      719       --      96.0    19.0      330     <5.0
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                            SEP
                              15...        90      718       --      47.0    11.0      165     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
Go to Table of Contents

475054102193000 LAKE SAKAKAWEA, VAN HOOK ARM 11

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1000    36.7       .60     590      7.7       .3     13.9
                              17...       1001      --      3.1      584      7.8       .4     13.6
                              17...       1002      --      5.1      590      7.9       .3     13.4
                              17...       1003      --      9.6      582      7.9       .6     13.1
                              17...       1004      --     11.2      583      7.9      1.0     12.7
                            MAY
                              19...       1225    40.0       .00     612      8.5     10.1     11.8
                              19...       1226      --      2.6      613      8.5      8.8     11.6
                              19...       1227      --      5.6      608      8.4      8.6     11.3
                              19...       1228      --      8.9      615      8.4      8.6     11.2
                              19...       1229      --     12.2      602      8.4      8.2     10.6
                            AUG
                              03...       0945    44.9       .00     550      8.2     21.2      8.5
                              03...       0946      --      2.9      557      8.2     21.2      8.3
                              03...       0947      --      5.8      604      8.2     20.8      8.2
                              03...       0948      --      9.0      613      8.2     20.5      8.1
                              03...       0949      --     12.0      621      8.2     20.0      7.6
                              03...       0950      --     13.7      628      8.1     18.5      6.6
                            SEP
                              15...       1005    41.7       .00     556      8.1     16.2      8.3
                              15...       1006      --      2.1      575      8.1     16.2      8.2
                              15...       1007      --      3.9      576      8.1     16.2      8.2
                              15...       1008      --      6.1      578      8.1     16.2      8.1
                              15...       1009      --      8.1      553      8.1     16.1      8.0
                              15...       1010      --     10.1      576      8.1     16.2      8.1
                              15...       1011      --     11.9      568      8.1     16.2      8.0
                              15...       1012      --     12.7      575      8.1     16.2      8.0


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       103      713      1.90    47.0     -8.0      130      9.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              19...       111      724       --     67.0     17.0      150     <5.0
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                              19...        --       --       --       --       --       --       --
                            AUG
                              03...       102      718       --     97.0     18.5      330     <5.0
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                              03...        --       --       --       --       --       --       --
                            SEP
                              15...        90      718       --     59.0     11.0      175     <5.0
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
                              15...        --       --       --       --       --       --       --
Go to Table of Contents

474335102113900 LAKE SAKAKAWEA, DEEPWATER BAY 1

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1618    44.6       .65     410      7.7       .1     13.9
                              17...       1619      --      2.1      586      7.8       .4     13.4
                              17...       1620      --      4.3      587      7.9       .4     13.2
                              17...       1621      --      6.7      584      8.0       .5     13.1
                              17...       1622      --      9.3      595      8.0       .5     13.0
                              17...       1623      --     11.9      593      8.0       .6     12.9
                              17...       1624      --     13.6      600      8.0       .8     12.8
                            MAY
                              18...       1125    25.6       .00     633      7.7      9.8     11.3
                              18...       1126      --      2.4      633      8.2      9.7     11.3
                              18...       1127      --      4.5      633      8.2      9.7     11.3
                              18...       1128      --      6.5      632      8.2      9.7     11.2
                              18...       1129      --      7.8      636      8.2      9.7     11.1
                            AUG
                              02...       1150    31.8       .00     643      8.1     20.7      7.9
                              02...       1151      --      1.9      642      8.1     20.5      7.9
                              02...       1152      --      4.0      641      8.1     20.3      7.9
                              02...       1153      --      6.1      640      8.1     20.2      7.9
                              02...       1154      --      8.1      638      8.1     18.9      7.2
                              02...       1155      --      9.7      638      8.0     18.5      6.8
                            SEP
                              14...       1025    32.8       .00     590      7.8     15.8      9.1
                              14...       1026      --      2.2      591      8.0     15.8      9.0
                              14...       1027      --      4.1      591      8.1     15.8      8.9
                              14...       1028      --      6.2      592      8.1     15.8      8.9
                              14...       1029      --      8.2      592      8.2     15.8      8.9
                              14...       1030      --      9.9      592      8.2     15.8      8.8


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       102      711      2.13    134      -6.0      100      7.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              18...       105      727       --      43.0    15.0      170     <5.0
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                            AUG
                              02...        95      716       --     104      25.5       90     <5.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              14...        98      718       --      43.0    11.0      285      9.0
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
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474330102113800 LAKE SAKAKAWEA, DEEPWATER BAY 2

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                DEPTH    DEPTH     PH       SPE-
                                TO TOP  TO BOT-   WATER    CIFIC    HARD-             MAGNE-   POTAS-   SODIUM
                                  OF    TOM OF    WHOLE     CON-    NESS    CALCIUM    SIUM,    SIUM,     AD-
                                SAMPLE   SAMPLE    LAB     DUCT-    TOTAL    DIS-      DIS-     DIS-    SORP-
                                INTER-   INTER-  (STAND-   ANCE     (MG/L    SOLVED   SOLVED   SOLVED    TION
              DATE      TIME   VAL(IN   VAL(IN     ARD      LAB      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM
                               METERS)  METERS)   UNITS)  (US/CM)   CACO3)   AS CA)   AS MG)   AS K)            PERCENT
                               (82047)  (82048)  (00403)  (90095)  (00900)  (00915)  (00925)  (00935)  (00931)  (00932)

          FEB
            17...       1705      .6      1.1      7.7      615      200      49       19        4        1       34
            17...       1710    15.5     16.0      7.5      633      200      50       19        4        2       35
          MAY
            18...       1155      .0       --      7.9      619      210      52       20        4        1       33
            18...       1200    15.1       --      7.8      605      210      52       20        4        2       33
          AUG
            02...       1225      .0       --      7.6      644      210      50       21        4        2       36
            02...       1230    22.3       --      7.5      643      210      49       20        4        2       36
          SEP
            14...       1045      .0       --      8.3      572      190      46       18        4        2       36
            14...       1050    17.4       --      8.4      573      190      45       18        4        2       36


                                 ANC                       NITRO-
                               UNFLTRD   CHLO-            GEN,AM-   NITRO-   NITRO-   NITRO-            PHOS-
                      SODIUM,  TIT 4.5   RIDE,   SULFATE  MONIA +    GEN,     GEN,     GEN,    NITRO-  PHORUS    PHOS-
                       DIS-      LAB     DIS-     DIS-    ORGANIC  AMMONIA  NO2+NO3  ORGANIC    GEN,     DIS-   PHORUS
                      SOLVED    (MG/L    SOLVED   SOLVED   TOTAL    TOTAL    TOTAL    TOTAL    TOTAL    SOLVED   TOTAL
              DATE     (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                       AS NA)   CACO3)   AS CL)  AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)
                      (00930)  (90410)  (00940)  (00945)  (00625)  (00610)  (00630)  (00605)  (00600)  (00666)  (00665)

          FEB
            17...       48       160      8.4      150      .12      .01      .04       .11     .16     <.01      .07
            17...       51       170      8.6      150      .24      .04      .06       .20     .30      .02      .08
          MAY
            18...       50       170      8.9      160      .24     <.01      .08       --      .32     <.01      .02
            18...       50       170      8.9      160      .20     <.01      .09       --      .29      .02      .04
          AUG
            02...       56       160      9.0      160      .17     <.01      .04       --      .21     <.01     <.02
            02...       55       160      9.0      160      .21     <.01      .11       --      .32     <.01     <.02
          SEP
            14...       50       140      7.8      150      .17     <.01      .07       --      .24      .02     <.02
            14...       49       140      7.8      150      .19     <.01      .08       --      .27      .02     <.02


                           SOLIDS,  CHLOR-A  CHLOR-B
                           SUM OF    PHYTO-   PHYTO-  ALUMI-                               BERYL-
                           CONSTI-   PLANK-   PLANK-    NUM,    ANTI-            BARIUM,    LIUM   BORON,   CADMIUM
                           TUENTS,    TON      TON     TOTAL    MONY,   ARSENIC   TOTAL    TOTAL    TOTAL    TOTAL
                             DIS-   CHROMO   CHROMO   RECOVER   TOTAL    TOTAL   RECOVER  RECOVER  RECOVER  RECOVER
                   DATE     SOLVED  FLUOROM  FLUOROM   -ABLE    (UG/L    (UG/L    -ABLE    -ABLE    -ABLE    -ABLE
                            (MG/L)   (UG/L)   (UG/L)   (UG/L)   AS SB)   AS AS)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                           (70301)  (70953)  (70954)  (01104)  (01097)  (01002)  (01009)  (00998)  (00999)  (01113)

               FEB
                 17...       370     <3.0     <1.0      <50      <1        3       57       <1       140      <1
                 17...       382       --       --      <50      <1        3       56       <1       150      <1
               MAY
                 18...       395       --       --       51      <1        2       61       <1       150      <1
                 18...       397       --       --       53      <1        2       60       <1       150      <1
               AUG
                 02...       403     <3.0     <1.0      <50      <2       <1       61       <1       140      <1
                 02...       397       --       --      <50      <1        2       59       <1       140      <1
               SEP
                 14...       356     <3.0     <1.0       97      <1        2       52       <1       140      <1
                 14...       353       --       --      160      <1        2       51       <1       150      <1


                                                                                                    THAL-
                            CHRO-             IRON,            MANGAN-                              LIUM,
                            MIUM,   COPPER,   TOTAL    LEAD,     ESE    NICKEL,   SELE-   SILVER,   TOTAL    ZINC,
                            TOTAL    TOTAL    RECOV-   TOTAL    TOTAL    TOTAL    NIUM,    TOTAL    RECOV-   TOTAL
                           RECOVER  RECOVER   ERABLE  RECOVER  RECOVER  RECOVER   TOTAL   RECOVER   ERABLE  RECOVER
                   DATE     -ABLE    -ABLE    (UG/L    -ABLE   - ABLE    -ABLE    (UG/L    -ABLE    (UG/L    -ABLE
                            (UG/L)   (UG/L)   AS FE)   (UG/L)   (UG/L)   (UG/L)   AS SE)   (UG/L)   AS TL)   (UG/L)
                           (01118)  (01119)  (01045)  (01114)  (01123)  (01074)  (01147)  (01079)  (01128)  (01094)

               FEB
                 17...       <1        2        <7      <1        <2       3        2       <1       <1        9
                 17...       <1        2        <7      <1        <2       3       <1       <1       <1        8
               MAY
                 18...       <1       10       150      <1        <2       3       <1       <1       <1       10
                 18...       <1        2       650      <1        <2       3       <1       <1       <1        4
               AUG
                 02...       <1        2        <7      <1        <2       3       <1       <1       <1        6
                 02...       <1        1        <7      <1        <2       3        2       <1       <1        9
               SEP
                 14...       <1        2       100      <1       <10       3       <1       <1       <1        6
                 14...       <1        2       160      <1       <10       3       <1       <1       <1        6

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1656    52.8       .64     587      8.1       .2     13.9
                              17...       1657      --      2.2      588      8.1       .3     13.6
                              17...       1658      --      5.3      585      8.1       .4     13.4
                              17...       1659      --      8.6      583      8.1       .5     13.1
                              17...       1700      --     11.8      588      8.1       .6     12.9
                              17...       1701      --     14.7      600      8.1       .7     12.6
                              17...       1702      --     16.1      610      8.0       .9     12.3
                            MAY
                              18...       1143    49.6       .00     628      8.3      8.6     11.5
                              18...       1144      --      2.1      629      8.3      8.6     11.2
                              18...       1145      --      4.1      629      8.3      8.6     11.2
                              18...       1146      --      6.3      632      8.3      8.6     11.1
                              18...       1147      --      8.4      626      8.3      8.6     11.0
                              18...       1148      --     10.6      625      8.2      7.8     10.7
                              18...       1149      --     12.9      628      8.2      7.1     10.6
                              18...       1150      --     15.1      623      8.2      7.1     10.5
                            AUG
                              02...       1210    73.0       .00     642      8.1     20.6      7.9
                              02...       1211      --      2.4      643      8.1     20.1      7.8
                              02...       1212      --      4.6      641      8.1     19.6      7.7
                              02...       1213      --      7.4      641      8.1     19.3      7.5
                              02...       1214      --      9.6      643      8.1     18.6      7.2
                              02...       1215      --     11.8      644      8.0     18.4      7.0
                              02...       1216      --     13.8      645      8.0     18.0      6.9
                              02...       1217      --     16.5      646      8.0     17.7      6.8
                              02...       1218      --     18.9      644      7.9     17.4      6.3
                              02...       1219      --     20.5      643      7.8     17.1      5.7
                              02...       1220      --     22.3      645      7.8     16.7      4.9
                            SEP
                              14...       1035    57.1       .00     592      8.3     15.9      9.0
                              14...       1036      --      2.1      591      8.3     15.8      8.9
                              14...       1037      --      3.9      595      8.3     15.8      8.8
                              14...       1038      --      6.1      591      8.3     15.8      8.7
                              14...       1039      --      8.1      599      8.3     15.8      8.7
                              14...       1040      --     10.0      593      8.3     15.8      8.7
                              14...       1041      --     12.0      592      8.3     15.8      8.6
                              14...       1042      --     14.1      581      8.3     15.8      8.7
                              14...       1043      --     16.0      594      8.3     15.8      8.6
                              14...       1044      --     17.4      586      8.3     15.6      8.6

                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       103      711      2.10     70.0    -7.0       90      5.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              18...       103      727       --      71.0    15.5      170     <5.0
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                            AUG
                              02...        95      712       --     119      25.0       30     <5.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              14...        96      718       --      51.0    11.0      295      7.0
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
Go to Table of Contents

474323102114200 LAKE SAKAKAWEA, DEEPWATER BAY 3

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1632    54.1       .60     590      8.0       .3     13.7
                              17...       1633      --      2.9      592      8.0       .3     13.5
                              17...       1634      --      4.9      590      8.1       .4     13.2
                              17...       1635      --      7.3      589      8.1       .4     13.1
                              17...       1636      --     10.5      581      8.1       .5     12.9
                              17...       1637      --     13.3      600      8.0       .7     12.7
                              17...       1638      --     15.7      587      8.0       .9     12.3
                              17...       1639      --     16.5      618      8.0      1.1     11.6
                            MAY
                              18...       1225    27.3       .00     628      8.3      8.0     11.3
                              18...       1226      --      2.0      728      8.2      7.8     11.1
                              18...       1227      --      3.8      629      8.2      7.6     10.8
                              18...       1228      --      5.9      628      8.2      7.4     10.8
                              18...       1229      --      8.3      629      8.2      7.3     10.7
                            AUG
                              02...       1235    65.6       .00     639      8.1     20.8      7.9
                              02...       1236      --      2.5      641      8.1     19.9      7.8
                              02...       1237      --      4.9      640      8.1     19.6      7.8
                              02...       1238      --      7.4      640      8.1     18.8      7.3
                              02...       1239      --      9.8      638      8.1     18.5      7.2
                              02...       1240      --     12.6      641      8.1     18.3      7.2
                              02...       1241      --     15.1      655      8.0     18.1      7.0
                              02...       1242      --     17.4      654      8.0     17.6      6.6
                              02...       1243      --     20.0      639      7.9     17.2      6.1
                            SEP
                              14...       1055    59.3       .00     590      8.3     15.9      9.1
                              14...       1056      --      2.3      591      8.3     15.8      8.8
                              14...       1057      --      4.8      591      8.3     15.9      8.7
                              14...       1058      --      7.0      591      8.3     15.9      8.7
                              14...       1059      --      9.5      591      8.3     15.9      8.7
                              14...       1100      --     12.0      591      8.3     15.9      8.6
                              14...       1101      --     14.6      591      8.3     15.8      8.6
                              14...       1102      --     17.0      596      8.3     15.5      8.6
                              14...       1103      --     18.1      596      8.3     15.5      8.7


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       101      711      1.97     77.0    -6.0      100      7.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              18...       100      727       --      51.0    17.5      160     <5.0
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                            AUG
                              02...        94      712       --     113      31.0      120     <5.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              14...        98      718       --      59.0    11.0      285      9.0
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
Go to Table of Contents

474329102101800 LAKE SAKAKAWEA, DEEPWATER BAY 4

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1522    39.0       .70     593      7.9       .4     13.6
                              17...       1523      --      1.4      590      8.0       .4     13.5
                              17...       1524      --      3.4      595      8.0       .4     13.3
                              17...       1525      --      4.8      585      8.0       .4     13.1
                              17...       1526      --      7.5      588      8.0       .4     13.1
                              17...       1527      --     11.6      612      7.9       .9     12.2
                              17...       1528      --     11.9      615      7.9       .9     12.0
                            MAY
                              18...       1235    42.4       .00     619      8.3      9.1     11.3
                              18...       1236      --      2.2      620      8.3      8.9     11.1
                              18...       1237      --      4.1      623      8.3      8.6     11.0
                              18...       1238      --      6.0      622      8.3      8.3     10.9
                              18...       1239      --      8.3      623      8.3      8.2     10.8
                              18...       1240      --     10.1      624      8.3      8.1     10.8
                              18...       1241      --     12.2      625      8.2      7.9     10.7
                              18...       1242      --     12.9      624      8.2      7.9     10.7
                            AUG
                              02...       1250    54.8       .00     642      8.1     20.6      7.7
                              02...       1251      --      2.5      643      8.1     19.8      7.7
                              02...       1252      --      5.0      641      8.1     19.4      7.4
                              02...       1253      --      7.6      647      8.0     18.5      6.3
                              02...       1254      --     10.2      639      7.9     18.0      6.4
                              02...       1255      --     12.4      631      7.9     17.8      6.2
                              02...       1256      --     14.9      631      7.8     17.6      5.7
                              02...       1257      --     16.7      644      7.8     17.6      5.6
                            SEP
                              14...       1140    45.3       .00     595      8.3     15.6      9.0
                              14...       1141      --      2.0      595      8.3     15.6      8.9
                              14...       1142      --      4.0      595      8.3     15.6      8.9
                              14...       1143      --      5.9      595      8.3     15.5      8.8
                              14...       1144      --      8.9      595      8.3     15.5      8.8
                              14...       1145      --     10.0      596      8.3     15.5      8.7
                              14...       1146      --     12.1      596      8.3     15.3      8.7
                              14...       1147      --     13.8      600      8.3     14.9      8.7


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       101      711      2.23    114      -6.0      120      7.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              18...       103      727       --      47.0    17.5      155     <5.0
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                            AUG
                              02...        93      710       --     112      33.0       90     <5.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              14...        96      719       --      59.0    11.0      290      6.0
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
Go to Table of Contents

474323102101500 LAKE SAKAKAWEA, DEEPWATER BAY 5

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                DEPTH    DEPTH     PH       SPE-
                                TO TOP  TO BOT-   WATER    CIFIC    HARD-             MAGNE-   POTAS-   SODIUM
                                  OF    TOM OF    WHOLE     CON-    NESS    CALCIUM    SIUM,    SIUM,     AD-
                                SAMPLE   SAMPLE    LAB     DUCT-    TOTAL    DIS-      DIS-     DIS-    SORP-
                                INTER-   INTER-  (STAND-   ANCE     (MG/L    SOLVED   SOLVED   SOLVED    TION
              DATE      TIME   VAL(IN   VAL(IN     ARD      LAB      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM
                               METERS)  METERS)   UNITS)  (US/CM)   CACO3)   AS CA)   AS MG)   AS K)            PERCENT
                               (82047)  (82048)  (00403)  (90095)  (00900)  (00915)  (00925)  (00935)  (00931)  (00932)

          FEB
            17...       1545      .6      1.1      7.6      615      200      49       18        3        1       34
            17...       1550    12.0     12.5      7.5      647      210      51       20        4        2       36
          MAY
            18...       1300      .0       --      8.0      619      220      54       21        4        2       34
            18...       1305    13.9       --      7.7      605      220      52       20        4        2       33
          AUG
            02...       1320      .0       --      7.2      647      210      49       20        4        2       36
            02...       1325    15.2       --      7.5      643      210      50       21        4        2       36
          SEP
            14...       1130      .0       --      8.3      576      190      47       19        4        2       36
            14...       1135    13.6       --      8.4      575      190      46       19        4        2       36


                                 ANC                       NITRO-
                               UNFLTRD   CHLO-            GEN,AM-   NITRO-   NITRO-   NITRO-            PHOS-
                      SODIUM,  TIT 4.5   RIDE,   SULFATE  MONIA +    GEN,     GEN,     GEN,    NITRO-  PHORUS    PHOS-
                       DIS-      LAB     DIS-     DIS-    ORGANIC  AMMONIA  NO2+NO3  ORGANIC    GEN,     DIS-   PHORUS
                      SOLVED    (MG/L    SOLVED   SOLVED   TOTAL    TOTAL    TOTAL    TOTAL    TOTAL    SOLVED   TOTAL
              DATE     (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                       AS NA)   CACO3)   AS CL)  AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)    AS P)    AS P)
                      (00930)  (90410)  (00940)  (00945)  (00625)  (00610)  (00630)  (00605)  (00600)  (00666)  (00665)

          FEB
            17...       48       160      8.4      150      .15      .04      .05       .11     .20     <.01      .06
            17...       54       170      8.6      160      .26      .04      .06       .22     .32     <.01      .11
          MAY
            18...       54       160      8.8      160      .23     <.01      .04       --      .27     <.01      .02
            18...       51       160      9.0      160      .23     <.01      .09       --      .32     <.01      .07
          AUG
            02...       56       160      8.9      160      .15     <.01      .06       --      .21     <.01     <.02
            02...       56       160      8.8      160      .21     <.01      .10       --      .31     <.01     <.02
          SEP
            14...       52       140      7.8      150      .17     <.01      .07       --      .24      .01      .02
            14...       51       140      7.8      150      .19     <.01      .08       --      .27      .01      .03


                           SOLIDS,  CHLOR-A  CHLOR-B
                           SUM OF    PHYTO-   PHYTO-  ALUMI-                               BERYL-
                           CONSTI-   PLANK-   PLANK-    NUM,    ANTI-            BARIUM,    LIUM   BORON,   CADMIUM
                           TUENTS,    TON      TON     TOTAL    MONY,   ARSENIC   TOTAL    TOTAL    TOTAL    TOTAL
                             DIS-   CHROMO   CHROMO   RECOVER   TOTAL    TOTAL   RECOVER  RECOVER  RECOVER  RECOVER
                   DATE     SOLVED  FLUOROM  FLUOROM   -ABLE    (UG/L    (UG/L    -ABLE    -ABLE    -ABLE    -ABLE
                            (MG/L)   (UG/L)   (UG/L)   (UG/L)   AS SB)   AS AS)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                           (70301)  (70953)  (70954)  (01104)  (01097)  (01002)  (01009)  (00998)  (00999)  (01113)

               FEB
                 17...       369     <3.0     <1.0      <50      <1        3       58       <1       140      <1
                 17...       393       --       --      <50       1        3       57       <1       150       2
               MAY
                 18...       402       --       --      <50      <1        2       61       <1       140      <1
                 18...       397       --       --      <50      <1        2       60       <1       140      <1
               AUG
                 02...       400     <3.0     <1.0      <50      <2       <1       61       <1       140      <1
                 02...       399       --       --      <50      <1        2       54       <1       150      <1
               SEP
                 14...       360     <3.0     <1.0      <50      <1        2       52       <1       150      <1
                 14...       359       --       --      <50      <1        2       50       <1       150      <1


                                                                                                    THAL-
                            CHRO-             IRON,            MANGAN-                              LIUM,
                            MIUM,   COPPER,   TOTAL    LEAD,     ESE    NICKEL,   SELE-   SILVER,   TOTAL    ZINC,
                            TOTAL    TOTAL    RECOV-   TOTAL    TOTAL    TOTAL    NIUM,    TOTAL    RECOV-   TOTAL
                           RECOVER  RECOVER   ERABLE  RECOVER  RECOVER  RECOVER   TOTAL   RECOVER   ERABLE  RECOVER
                   DATE     -ABLE    -ABLE    (UG/L    -ABLE   - ABLE    -ABLE    (UG/L    -ABLE    (UG/L    -ABLE
                            (UG/L)   (UG/L)   AS FE)   (UG/L)   (UG/L)   (UG/L)   AS SE)   (UG/L)   AS TL)   (UG/L)
                           (01118)  (01119)  (01045)  (01114)  (01123)  (01074)  (01147)  (01079)  (01128)  (01094)

               FEB
                 17...       <1        3        <7      <1        <2       3        1       <1       <1        9
                 17...       <1        2        <7      <1         4       3       <1       <1       <1       12
               MAY
                 18...       <1        2        67      <1        <2       3       <1       <1       <1        4
                 18...       <1        3       420      <1        <2       3       <1       <1       <1        2
               AUG
                 02...       <1        1        <7      <1        <2       4       <1       <1       <1       10
                 02...       <1        1        <7      <1        <2       4        1       <1       <1        9
               SEP
                 14...       <1        1       <10      <1       <10       3       <1       <1       <1        5
                 14...       <1        1       <10      <1       <10       3       <1       <1       <1        7

                                  474323102101500  LAKE SAKAKAWEA, DEEPWATER BAY 5--Continued

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1538    42.0       .60     518      7.8       .2     13.7
                              17...       1539      --      3.3      585      8.0       .4     13.4
                              17...       1540      --      5.4      586      8.0       .4     13.2
                              17...       1541      --      9.9      594      8.0       .5     13.1
                              17...       1542      --     12.8      643      7.9       .8     12.2
                            MAY
                              18...       1248    45.6       .00     637      8.4     10.0     11.3
                              18...       1249      --      2.1      636      8.4     10.0     11.3
                              18...       1250      --      4.1      636      8.4      9.8     11.1
                              18...       1251      --      6.1      634      8.3      9.2     10.8
                              18...       1252      --      8.2      632      8.3      9.0     10.9
                              18...       1253      --     10.1      636      8.3      8.7     10.7
                              18...       1254      --     12.4      626      8.3      8.0     10.6
                              18...       1255      --     13.9      622      8.3      7.8     10.5
                            AUG
                              02...       1310    49.9       .00     642      8.1     20.7      7.5
                              02...       1311      --      2.6      641      8.0     19.7      7.6
                              02...       1312      --      4.9      644      8.1     19.4      7.4
                              02...       1313      --      7.4      645      8.0     18.5      6.4
                              02...       1314      --      9.9      644      8.0     18.1      6.8
                              02...       1315      --     12.5      643      8.0     17.9      6.4
                              02...       1316      --     15.2      642      7.9     17.6      5.7
                            SEP
                              14...       1120    44.6       .00     597      8.3     15.7      9.0
                              14...       1121      --      2.0      596      8.8     15.7      8.8
                              14...       1122      --      3.9      595      8.3     15.7      8.8
                              14...       1123      --      6.0      597      8.3     15.6      8.8
                              14...       1124      --      8.1      596      8.3     15.6      8.6
                              14...       1125      --     10.0      595      8.3     15.6      8.6
                              14...       1126      --     12.1      592      8.3     15.5      8.6
                              14...       1127      --     13.6      591      8.3     15.4      8.6


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       101      711      2.07    59.0     -6.0       90      7.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              18...       105      727       --     40.0     19.5      155     <5.0
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                            AUG
                              02...        90      712       --     73.0     31.0      120     <5.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              14...        96      718       --     59.0     11.0      280      7.0
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
Go to Table of Contents

474317102100800 LAKE SAKAKAWEA, DEEPWATER BAY 6

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                                                              PH
                                                                    SPE-     WATER
                                                                    CIFIC    WHOLE
                                                  RESER-    SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                   VOIR    PLING    DUCT-   (STAND-   ATURE     DIS-
                                DATE      TIME    DEPTH    DEPTH    ANCE      ARD     WATER    SOLVED
                                                  (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                 (72025)  (00098)  (00095)  (00400)  (00010)  (00300)

                            FEB
                              17...       1505    37.1       .75     584      7.7      1.1     13.5
                              17...       1506      --      1.2      590      7.8       .5     13.5
                              17...       1507      --      2.9      591      7.9       .4     13.3
                              17...       1508      --      5.0      591      7.9       .4     13.2
                              17...       1509      --      7.4      590      7.9       .5     13.0
                              17...       1510      --     10.2      590      7.9       .7     12.8
                              17...       1511      --     11.3      612      7.9       .9     12.1
                            MAY
                              18...       1305    36.7       .00     655      8.4     10.8     11.5
                              18...       1306      --      2.2      654      8.4     10.8     11.5
                              18...       1307      --      4.3      657      8.4     10.7     11.4
                              18...       1308      --      6.2      646      8.4     10.4     11.2
                              18...       1309      --      8.5      633      8.3      9.0     10.8
                              18...       1310      --     10.5      634      8.3      8.8     10.2
                              18...       1311      --     11.2      627      8.3      8.5     10.1
                            AUG
                              02...       1330    47.9       .00     640      8.1     20.6      7.3
                              02...       1331      --      3.1      641      8.1     19.4      7.5
                              02...       1332      --      6.1      642      8.1     19.2      7.3
                              02...       1333      --      9.2      642      8.0     18.2      6.8
                              02...       1334      --     11.9      642      8.0     18.0      6.5
                              02...       1335      --     14.6      642      7.9     17.8      6.0
                            SEP
                              14...       1110    27.6       .00     592      8.3     15.7      9.0
                              14...       1111      --      2.4      593      8.3     15.7      8.9
                              14...       1112      --      4.9      593      8.3     15.7      8.8
                              14...       1113      --      7.4      593      8.3     15.7      8.8
                              14...       1114      --      8.4      593      8.3     15.6      8.8


                                        OXYGEN,   BARO-                               WIND
                                          DIS-    METRIC            TRANS-            DIREC-
                                         SOLVED   PRES-              PAR-              TION    WIND
                                         (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                          CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                                DATE     SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                         ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                        (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                            FEB
                              17...       103      711      2.50    67.0       .7      120      7.0
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                              17...        --       --       --       --       --       --       --
                            MAY
                              18...       109      727       --     43.0     18.5      155      7.0
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                              18...        --       --       --       --       --       --       --
                            AUG
                              02...        88      710       --     68.0     33.0       30     <5.0
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                              02...        --       --       --       --       --       --       --
                            SEP
                              14...        96      718       --     55.0     11.0      300      8.0
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
                              14...        --       --       --       --       --       --       --
Go to Table of Contents

473633101161400 LAKE SAKAKAWEA NEAR LAKE AUDUBON

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                                DEPTH    DEPTH     PH       SPE-
                                TO TOP  TO BOT-   WATER    CIFIC    HARD-             MAGNE-   POTAS-   SODIUM
                                  OF    TOM OF    WHOLE     CON-    NESS    CALCIUM    SIUM,    SIUM,     AD-
                                SAMPLE   SAMPLE    LAB     DUCT-    TOTAL    DIS-      DIS-     DIS-    SORP-
                                INTER-   INTER-  (STAND-   ANCE     (MG/L    SOLVED   SOLVED   SOLVED    TION
              DATE      TIME   VAL(IN   VAL(IN     ARD      LAB      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM
                               METERS)  METERS)   UNITS)  (US/CM)   CACO3)   AS CA)   AS MG)   AS K)            PERCENT
                               (82047)  (82048)  (00403)  (90095)  (00900)  (00915)  (00925)  (00935)  (00931)  (00932)

          OCT
            21...       0950      .50      --      8.4      633      210      49       20       3.7       2       35
            21...       0955    21.5       --      8.4      636      210      50       20       3.8       2       35
          NOV
            23...       1130      .00      .20     8.3      638      210      51       20       3.2       2       36
            23...       1135    21.0     21.2      8.3      638      210      49       20       3.6       2       36
            23...       1140      .00     2.4       --       --       --       --       --       --       --       --
          FEB
            09...       1335      .65     1.1      8.0      654      210      51       21       4.1       2       35
            09...       1340      .65     2.2       --       --       --       --       --       --       --       --
            09...       1345    17.3     17.8      8.2      657      220      52       21       4.2       2       36
          MAR
            15...       1345      .80     1.0      8.3      664      210      51       20       3.8       2       35
            15...       1350      .80     2.1       --       --       --       --       --       --       --       --
            15...       1355    19.0     20.0      7.9     1000      320      79       29       4.7       2       37
          MAY
            12...       1015      .00      --      8.4      620      210      50       20       3.7       2       36
            12...       1020    20.0       --      8.4      621      200      49       19       3.6       2       36
            12...       1025      .00     2.0       --       --       --       --       --       --       --       --
          JUN
            18...       0955      .00      --      8.4      634      200      48       20       3.6       2       37
            18...       1000    14.0       --      8.4      626      200      49       20       3.7       2       35
            18...       1005    18.0       --      8.2      628      200      49       19       3.5       2       36
            18...       1010    21.0       --      8.1      632      200      49       19       3.5       2       36
            18...       1015      .00     1.0       --       --       --       --       --       --       --       --
          JUL
            29...       1120      .00      --      8.5      625      200      49       19       3.5       2       35
            29...       1125    10.0       --      8.4      626      200      49       19       3.4       2       36
            29...       1130    12.0       --      8.4      629      200      48       19       3.5       2       36
            29...       1135    16.5       --      8.4      616      200      49       19       3.5       2       36
            29...       1140      .00    11.0       --       --       --       --       --       --       --       --
          AUG
            17...       1115      .00      --      8.4      619      200      48       20       4.0       2       36
            17...       1120      .00     2.8       --       --       --       --       --       --       --       --
            17...       1125    14.7       --      8.4      615      200      49       20       4.0       2       36
          SEP
            10...       1120      .00      --      8.6      658      210      48       21       4.2       2       38
            10...       1125    22.0       --      8.4      639      200      49       20       3.8       2       37
            10...       1130      .00     4.0       --       --       --       --       --       --       --       --

                                 ANC                                         NITRO-   NITRO-   NITRO-
                               UNFLTRD   CHLO-    FLUO-   SILICA,             GEN,   GEN,AM-    GEN,    NITRO-
                      SODIUM,  TIT 4.5   RIDE,    RIDE,    DIS-    SULFATE  AMMONIA  MONIA +  NO2+NO3    GEN,    NITRO-
                       DIS-      LAB     DIS-      DIS-    SOLVED   DIS-      DIS-   ORGANIC    DIS-   ORGANIC    GEN,
                      SOLVED    (MG/L    SOLVED   SOLVED   (MG/L    SOLVED   SOLVED   TOTAL    SOLVED   TOTAL    TOTAL
              DATE     (MG/L     AS      (MG/L    (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                       AS NA)   CACO3)   AS CL)   AS F)    SIO2)   AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)
                      (00930)  (90410)  (00940)  (00950)  (00955)  (00945)  (00608)  (00625)  (00631)  (00605)  (00600)

          OCT
            21...       53       159      8.6       .53     5.7      150      .022      .23     .053      .21      .28
            21...       52       159      8.8       .56     5.5      150     <.020      .31    <.050      --       --
          NOV
            23...       55       158      8.6       .56     5.5      150     <.020      .34     .058      --       .40
            23...       54       158      8.8       .52     5.5      150      .046      .32     .058      .28      .38
            23...        --       --       --       --       --       --       --       --       --       --       --
          FEB
            09...       56       165      9.3       .59     5.8      160     <.020      .19     .066      --       .26
            09...        --       --       --       --       --       --       --       --       --       --       --
            09...       56       166      8.9       .56     6.0      170     <.020      .22     .062      --       .28
          MAR
            15...       52       162      9.3       .56     5.8      160       --       --       --       --       --
            15...        --       --       --       --       --       --       --       --       --       --       --
            15...       87       222     10         .54     8.8      280       --       --       --       --       --
          MAY
            12...       53       153      8.9       .51     5.1      150      .021      .26    <.050      .24      --
            12...       53       154      8.9       .52     5.7      150     <.020      .28    <.050      --       --
            12...        --       --       --       --       --       --       --       --       --       --       --
          JUN
            18...       54       201      9.0       .52     3.9      160     <.020      .42    <.050      --       --
            18...       51       157      8.4       .51     4.5      150     <.020      .27    <.050      --       --
            18...       53       153      8.2       .50     4.9      150     <.020      .32    <.050      --       --
            18...       54       158      8.3       .52     5.2      150      .030      .38    <.050      .34      --
            18...        --       --       --       --       --       --       --       --       --       --       --
          JUL
            29...       52       153      9.2       .47     4.4      160     <.020      .22    <.050      --       --
            29...       52       153      8.4       .47     4.4      160     <.020      .24    <.050      --       --
            29...       52       153      8.5       .47     4.4      160     <.020      .26    <.050      --       --
            29...       53       153      8.7       .48     4.6      150     <.020      .27    <.050      --       --
            29...        --       --       --       --       --       --       --       --       --       --       --
          AUG
            17...       55       152      8.1       .47     4.7      150     <.020      .20    <.050      --       --
            17...        --       --       --       --       --       --       --       --       --       --       --
            17...       54       153      8.6       .47     4.9      150     <.020      .22    <.050      --       --
          SEP
            10...       59       163      9.4       .51     4.5      170     <.020      .38    <.050      --       --
            10...       56       160      9.3       .50     4.7      160     <.020      .33    <.050      --       --
            10...        --       --       --       --       --       --       --       --       --       --       --

                       NITRO-   PHOS-            SOLIDS,  SOLIDS,           CHLOR-A  CHLOR-B
                        GEN,   PHORUS            RESIDUE  SUM OF             PHYTO-   PHYTO-            MANGA-
                      NITRITE   ORTHO,   PHOS-   AT 180   CONSTI-            PLANK-   PLANK-   IRON,    NESE,   CARBON,
                        DIS-    DIS-    PHORUS    DEG. C  TUENTS,    TUR-     TON      TON      DIS-     DIS-   ORGANIC
                       SOLVED  SOLVED    TOTAL     DIS-     DIS-     BID-   CHROMO   CHROMO    SOLVED   SOLVED   TOTAL
              DATE     (MG/L   (MG/L     (MG/L    SOLVED   SOLVED    ITY    FLUOROM  FLUOROM   (UG/L    (UG/L    (MG/L
                       AS N)   AS P)     AS P)    (MG/L)   (MG/L)   (NTU)    (UG/L)   (UG/L)   AS FE)   AS MN)   AS C)
                      (00613)  (00671)  (00665)  (70300)  (70301)  (00076)  (70953)  (70954)  (01046)  (01056)  (00680)

          OCT
            21...      <.010    <.010    <.050     406      388      2.0     1.40     <.100    <10      <4.0      3.5
            21...      <.010    <.010    <.050     410      390      2.9       --       --     <10       5.2      4.1
          NOV
            23...      <.010     .010     .016     417      392      2.6       --       --     <10       4.9      3.3
            23...      <.010     .010     .017     418      390     28         --       --     <10       4.1      3.5
            23...        --       --       --       --       --       --      .540    <.100      --       --       --
          FEB
            09...      <.010    <.010    <.050     429      412      1.0       --       --     <10       3.8      2.8
            09...        --       --       --       --       --       --      .490    <.100      --       --       --
            09...      <.010    <.010    <.050     430      414      1.1       --       --     <10       8.5      3.2
          MAR
            15...        --       --       --      423      398      1.0       --       --      E9.2    <3.0      3.2
            15...        --       --       --       --       --       --     2.30     <.100      --       --       --
            15...        --       --       --      674      636      1.4       --       --     <10       6.7      4.3
          MAY
            12...      <.010     .011    <.050     401      381       --       --       --      E5.4    <3.0      3.6
            12...      <.010    <.010    <.050     403      382       --       --       --     <10       3.1      3.2
            12...        --       --       --       --       --       --     1.30     <.100      --       --       --
          JUN
            18...      <.010    <.010    E.031      --      416      1.9       --       --     <10      <3.0      4.6
            18...      <.010    <.010    <.050     404      382      2.0       --       --     <10      <3.0      5.9
            18...      <.010    <.010    E.043      --      382      4.0       --       --     <10       8.4      3.7
            18...      <.010    <.010    E.047      --      386      7.2       --       --     <10      39        5.3
            18...        --       --       --       --       --       --      .310    <.100      --       --       --
          JUL
            29...      <.010    <.010    <.050     402      392      2.0       --       --     <10      E1.8       --
            29...      <.010    <.010    <.050     392      385      2.0       --       --     <10      <3.0       --
            29...      <.010    <.010    <.050     400      384      2.0       --       --     <10      <3.0       --
            29...      <.010    <.010    <.050     403      382      4.5       --       --      E6.6    <3.0       --
            29...        --       --       --       --       --       --      .270    <.100      --       --       --
          AUG
            17...      <.010    <.010    <.050     400      385      1.6       --       --     <10      <3.0      3.7
            17...        --       --       --       --       --       --      .670    <.100      --       --       --
            17...      <.010    <.010    <.050     400      386      2.1       --       --     <10      <3.0      3.8
          SEP
            10...      <.010    <.010    <.050     424      413      1.8       --       --      E7.7    <2.2      3.3
            10...      <.010    <.010    <.050     397      400      9.3       --       --     <10       5.0      3.7
            10...        --       --       --       --       --       --      .750    <.100      --       --       --

                                                                                   PH
                                                                         SPE-     WATER
                                              ELEV-                      CIFIC    WHOLE
                                              ATION    RESER-    SAM-    CON-     FIELD   TEMPER-    TUR-
                                              ABOVE     VOIR    PLING    DUCT-   (STAND-   ATURE     BID-
                            DATE      TIME     NGVD    DEPTH    DEPTH    ANCE      ARD     WATER     ITY
                                              (FEET)   (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (NTU)
                                             (72020)  (72025)  (00098)  (00095)  (00400)  (00010)  (00076)

                        OCT
                          21...       0935   1841.70   70.5       .00     654      8.2     10.6     16
                          21...       0936      --       --      1.2      654      8.2     10.5     16
                          21...       0937      --       --      2.4      654      8.3     10.6     16
                          21...       0938      --       --      4.7      655      8.3     10.6     17
                          21...       0939      --       --      7.6      656      8.3     10.6     16
                          21...       0940      --       --      9.8      657      8.3     10.5     16
                          21...       0941      --       --     12.1      659      8.3     10.4     16
                          21...       0942      --       --     15.0      660      8.3     10.3     17
                          21...       0943      --       --     17.7      661      8.3     10.2     18
                          21...       0944      --       --     19.4      660      8.3     10.2     19
                          21...       0945      --       --     21.5      661      8.3     10.1       --
                        NOV
                          23...       1120   1841.70   69.5       .00     665      8.2      3.6      5.0
                          23...       1121      --       --      1.1      665      8.2      3.6      6.0
                          23...       1122      --       --      3.1      666      8.2      3.6      6.0
                          23...       1123      --       --      5.8      666      8.2      3.6      7.0
                          23...       1124      --       --      8.9      666      8.2      3.6      7.0
                          23...       1125      --       --     10.8      667      8.2      3.6      6.0
                          23...       1126      --       --     13.3      667      8.2      3.6      8.0
                          23...       1127      --       --     16.5      665      8.2      3.6      7.0
                          23...       1128      --       --     19.2      666      8.2      3.6      7.0
                          23...       1129      --       --     21.2      665      8.2      3.6     15
                        DEC
                          04...       1240   1841.10   65.6       .00     605      8.4      4.3     21
                          04...       1241      --       --      2.0      604      8.4      4.3     22
                          04...       1242      --       --      4.0      604      8.4      4.3     21
                          04...       1243      --       --      6.0      604      8.4      4.3     21
                          04...       1244      --       --      8.0      600      8.4      4.3     20
                          04...       1245      --       --     10.0      600      8.4      4.3     21
                          04...       1246      --       --     12.0      600      8.4      4.3     20
                          04...       1247      --       --     14.0      600      8.4      4.3     20
                          04...       1248      --       --     16.0      600      8.4      4.4     21
                          04...       1249      --       --     18.0      597      8.4      4.4     21
                          04...       1250      --       --     20.0      596      8.4      4.4     19
                        FEB
                          09...       1325   1839.70   58.4       .70     716      8.1       .0      5.1
                          09...       1326      --       --      1.2      712      8.2       .0      5.0
                          09...       1327      --       --      3.0      706      8.2       .0      5.0
                          09...       1328      --       --      6.0      710      8.2       .0      5.0
                          09...       1329      --       --      8.8      710      8.3       .0      5.0
                          09...       1330      --       --     11.6      706      8.3       .0      5.0
                          09...       1331      --       --     14.3      713      8.3       .2      6.0
                          09...       1332      --       --     17.1      891      8.1      1.7     11
                        MAR
                          15...       1330   1839.20   65.6       .80     688      8.3      -.2       .00
                          15...       1331      --       --      1.6      683      8.4      -.1       .00
                          15...       1332      --       --      3.3      687      8.4       .0       .00
                          15...       1333      --       --      6.4      691      8.4       .0       .00
                          15...       1334      --       --      9.2      693      8.5       .0       .00
                          15...       1335      --       --     11.7      691      8.5       .1       .00
                          15...       1336      --       --     14.4      694      8.5       .2      1.0
                          15...       1337      --       --     17.0      984      8.2      1.2      3.0
                          15...       1338      --       --     19.4     1370      7.6      3.1      5.0
                          15...       1339      --       --     20.0     1570      7.5      3.7      8.0
                        MAY
                          12...       0940   1840.80   67.3       .00     620      8.2     11.8     18
                          12...       0942      --       --      1.0      630      8.3      6.2     17
                          12...       0944      --       --      2.0      630      8.4      6.2     20
                          12...       0946      --       --      3.0      630      8.4      6.2     17
                          12...       0948      --       --      4.0      630      8.4      6.2     17
                          12...       0950      --       --      5.0      630      8.4      6.2     17
                          12...       0952      --       --      6.0      630      8.4      6.2     17
                          12...       0954      --       --      7.0      630      8.4      6.2     18
                          12...       0956      --       --      8.0      630      8.4      6.2     18
                          12...       0958      --       --     10.0      630      8.5      6.2     18
                          12...       1000      --       --     12.0      630      8.5      6.2     18
                          12...       1002      --       --     14.0      630      8.5      6.2     18
                          12...       1004      --       --     16.0      630      8.5      6.2     18
                          12...       1006      --       --     18.0      630      8.5      6.2     18
                          12...       1008      --       --     20.0      630      8.5      6.2     18

                                                                                   PH
                                                                         SPE-     WATER
                                              ELEV-                      CIFIC    WHOLE
                                              ATION    RESER-    SAM-    CON-     FIELD   TEMPER-    TUR-
                                              ABOVE     VOIR    PLING    DUCT-   (STAND-   ATURE     BID-
                            DATE      TIME     NGVD    DEPTH    DEPTH    ANCE      ARD     WATER     ITY
                                              (FEET)   (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (NTU)
                                             (72020)  (72025)  (00098)  (00095)  (00400)  (00010)  (00076)

                        JUN
                          18...       0940   1844.00   70.2       .00     620      8.5     15.6      3.0
                          18...       0941      --       --      2.0      620      8.6     15.6      4.0
                          18...       0942      --       --      4.0      619      8.5     15.6      4.0
                          18...       0943      --       --      6.0      618      8.5     15.5      3.0
                          18...       0944      --       --      8.0      616      8.5     15.5      3.0
                          18...       0945      --       --     10.0      612      8.5     15.4      4.0
                          18...       0946      --       --     12.0      610      8.4     15.2      4.0
                          18...       0947      --       --     14.0      607      8.3     13.4      6.0
                          18...       0948      --       --     16.0      609      8.2     12.6     13
                          18...       0949      --       --     18.0      610      8.1     12.3     15
                          18...       0950      --       --     20.0      614      8.0     11.6     29
                          18...       0951      --       --     21.4      616      8.0     11.4       --
                        JUL
                          29...       1110   1846.90   54.1       .00     614      8.4     23.6       .00
                          29...       1111      --       --      1.0      613      8.4     23.0      1.0
                          29...       1112      --       --      4.0      613      8.4     22.5       .00
                          29...       1113      --       --      7.0      612      8.4     21.6      1.0
                          29...       1114      --       --     10.0      613      8.4     21.0      3.0
                          29...       1115      --       --     13.0      612      8.3     20.0      2.0
                          29...       1116      --       --     16.0      612      8.2     19.4      2.0
                          29...       1118      --       --     16.5      613      8.2     19.1       --
                        AUG
                          17...       1105   1846.50   48.2       .00     579      8.5     19.3      7.0
                          17...       1106      --       --      1.0      579      8.5     19.3      6.0
                          17...       1107      --       --      4.0      579      8.5     19.2      7.0
                          17...       1108      --       --      7.0      579      8.4     19.2      7.0
                          17...       1109      --       --     10.0      578      8.4     19.2      7.0
                          17...       1110      --       --     14.7      578      8.4     19.1      8.0
                        SEP
                          10...       1106   1844.90   72.2       .00     607      8.6     16.9      3.0
                          10...       1107      --       --      1.0      609      8.6     16.0      4.0
                          10...       1108      --       --      3.0      610      8.6     16.7      3.0
                          10...       1109      --       --      6.0      598      8.5     16.6      3.0
                          10...       1110      --       --      9.0      598      8.5     16.5      3.0
                          10...       1111      --       --     12.0      595      8.5     16.5      3.0
                          10...       1112      --       --     15.0      591      8.5     16.4      4.0
                          10...       1113      --       --     18.0      589      8.5     16.3     10
                          10...       1114      --       --     22.0      591      8.5     16.2       --

                                             OXYGEN,   BARO-                               WIND
                                               DIS-    METRIC            TRANS-            DIREC-
                                              SOLVED   PRES-              PAR-              TION    WIND
                                    OXYGEN,   (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                      DIS-     CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                            DATE     SOLVED   SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                     (MG/L)   ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                    (00300)  (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                        OCT
                          21...      10.6      102      710       --      55.0     4.0      220      7.0
                          21...      10.5       --       --       --       --       --       --       --
                          21...      10.5       --       --       --       --       --       --       --
                          21...      10.4       --       --       --       --       --       --       --
                          21...      10.4       --       --       --       --       --       --       --
                          21...      10.4       --       --       --       --       --       --       --
                          21...      10.4       --       --       --       --       --       --       --
                          21...      10.4       --       --       --       --       --       --       --
                          21...      10.3       --       --       --       --       --       --       --
                          21...      10.3       --       --       --       --       --       --       --
                          21...      10.3       --       --       --       --       --       --       --
                        NOV
                          23...      11.6       93      718       --      47.0     6.0      250      7.0
                          23...      11.6       --       --       --       --       --       --       --
                          23...      11.6       --       --       --       --       --       --       --
                          23...      11.6       --       --       --       --       --       --       --
                          23...      11.6       --       --       --       --       --       --       --
                          23...      11.6       --       --       --       --       --       --       --
                          23...      11.6       --       --       --       --       --       --       --
                          23...      11.6       --       --       --       --       --       --       --
                          23...      11.6       --       --       --       --       --       --       --
                          23...      11.6       --       --       --       --       --       --       --
                        DEC
                          04...      12.8      105      717       --     106       1.5       80     18
                          04...      12.1       --       --       --       --       --       --       --
                          04...      11.9       --       --       --       --       --       --       --
                          04...      11.8       --       --       --       --       --       --       --
                          04...      11.7       --       --       --       --       --       --       --
                          04...      11.7       --       --       --       --       --       --       --
                          04...      11.7       --       --       --       --       --       --       --
                          04...      11.6       --       --       --       --       --       --       --
                          04...      11.6       --       --       --       --       --       --       --
                          04...      11.6       --       --       --       --       --       --       --
                          04...      11.6       --       --       --       --       --       --       --
                        FEB
                          09...      12.5       92      712      2.10     43.3     3.0      230     <5.0
                          09...      12.3       --       --       --       --       --       --       --
                          09...      12.4       --       --       --       --       --       --       --
                          09...      12.6       --       --       --       --       --       --       --
                          09...      12.7       --       --       --       --       --       --       --
                          09...      12.8       --       --       --       --       --       --       --
                          09...      12.8       --       --       --       --       --       --       --
                          09...       8.6       --       --       --       --       --       --       --
                        MAR
                          15...      12.5       92      705      2.60     41.3     8.5      260      5.0
                          15...      12.5       --       --       --       --       --       --       --
                          15...      12.5       --       --       --       --       --       --       --
                          15...      12.6       --       --       --       --       --       --       --
                          15...      12.6       --       --       --       --       --       --       --
                          15...      12.6       --       --       --       --       --       --       --
                          15...      12.8       --       --       --       --       --       --       --
                          15...       8.6       --       --       --       --       --       --       --
                          15...        .8       --       --       --       --       --       --       --
                          15...        .3       --       --       --       --       --       --       --
                        MAY
                          12...      11.8      117      710       --      38.0     9.0      200      5.0
                          12...      11.6       --       --       --       --       --       --       --
                          12...      11.5       --       --       --       --       --       --       --
                          12...      11.6       --       --       --       --       --       --       --
                          12...      11.5       --       --       --       --       --       --       --
                          12...      11.5       --       --       --       --       --       --       --
                          12...      11.4       --       --       --       --       --       --       --
                          12...      11.4       --       --       --       --       --       --       --
                          12...      11.5       --       --       --       --       --       --       --
                          12...      11.4       --       --       --       --       --       --       --
                          12...      11.4       --       --       --       --       --       --       --
                          12...      11.5       --       --       --       --       --       --       --
                          12...      11.4       --       --       --       --       --       --       --
                          12...      11.4       --       --       --       --       --       --       --
                          12...      11.4       --       --       --       --       --       --       --

                                                 OXYGEN,   BARO-                      WIND
                                                   DIS-    METRIC   TRANS-            DIREC-
                                                  SOLVED   PRES-     PAR-              TION    WIND
                                        OXYGEN,   (PER-     SURE     ENCY   TEMPER-   (DEG.    SPEED
                                          DIS-     CENT     (MM    (SECCHI   ATURE     FROM    (MILES
                                DATE     SOLVED   SATUR-     OF     DISK)     AIR      TRUE     PER
                                         (MG/L)   ATION)    HG)      (IN)   (DEG C)   NORTH)   HOUR)
                                        (00300)  (00301)  (00025)  (00077)  (00020)  (00036)  (00035)

                            JUN
                              18...       8.8       95      711      20.0    18.0      155      7.0
                              18...       8.8       --       --       --       --       --       --
                              18...       8.8       --       --       --       --       --       --
                              18...       8.9       --       --       --       --       --       --
                              18...       8.9       --       --       --       --       --       --
                              18...       8.9       --       --       --       --       --       --
                              18...       8.9       --       --       --       --       --       --
                              18...       8.4       --       --       --       --       --       --
                              18...       8.3       --       --       --       --       --       --
                              18...       8.1       --       --       --       --       --       --
                              18...       7.5       --       --       --       --       --       --
                              18...       7.0       --       --       --       --       --       --
                            JUL
                              29...       8.5      109      700     216      29.0        0     <5.0
                              29...       8.5       --       --       --       --       --       --
                              29...       8.5       --       --       --       --       --       --
                              29...       8.6       --       --       --       --       --       --
                              29...       8.3       --       --       --       --       --       --
                              29...       8.2       --       --       --       --       --       --
                              29...       7.9       --       --       --       --       --       --
                              29...       7.3       --       --       --       --       --       --
                            AUG
                              17...       9.0      105      712      55.0    21.0      210      8.0
                              17...       9.0       --       --       --       --       --       --
                              17...       9.0       --       --       --       --       --       --
                              17...       9.0       --       --       --       --       --       --
                              17...       9.0       --       --       --       --       --       --
                              17...       8.9       --       --       --       --       --       --
                            SEP
                              10...       9.8      109      710      79.0    13.0      100     <5.0
                              10...       9.9       --       --       --       --       --       --
                              10...       9.9       --       --       --       --       --       --
                              10...       9.9       --       --       --       --       --       --
                              10...       9.9       --       --       --       --       --       --
                              10...       9.9       --       --       --       --       --       --
                              10...       9.9       --       --       --       --       --       --
                              10...       9.8       --       --       --       --       --       --
                              10...       9.8       --       --       --       --       --       --
Go to Table of Contents

473629101154100 LAKE AUDUBON NEAR SNAKE CREEK PUMP PLANT

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999

                          DEPTH    DEPTH     PH       SPE-
                          TO TOP  TO BOT-   WATER    CIFIC    HARD-             MAGNE-   POTAS-   SODIUM
                            OF    TOM OF    WHOLE     CON-    NESS    CALCIUM    SIUM,    SIUM,     AD-            SODIUM,
                          SAMPLE   SAMPLE    LAB     DUCT-    TOTAL    DIS-      DIS-     DIS-    SORP-             DIS-
                          INTER-   INTER-  (STAND-   ANCE     (MG/L    SOLVED   SOLVED   SOLVED    TION            SOLVED
        DATE      TIME   VAL(IN   VAL(IN     ARD      LAB      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM   (MG/L
                         METERS)  METERS)   UNITS)  (US/CM)   CACO3)   AS CA)   AS MG)   AS K)            PERCENT   AS NA)
                         (82047)  (82048)  (00403)  (90095)  (00900)  (00915)  (00925)  (00935)  (00931)  (00932)  (00930)

       OCT
        21...     1025      .50      --      8.6      896      240      40       34       6.6       3       47       101
        21...     1030    15.4       --      8.6      919      250      42       35       6.6       3       46        98
       DEC
        04...     1135      .00      --      8.4      922      240      41       33       5.8       3       47       101
        04...     1140    15.0       --      8.4      910      240      42       34       6.3       3       47       101
        04...     1145      .00     6.6       --       --       --       --       --       --       --       --       --
       FEB
        09...     1105      .50     1.1      8.4      984      250      42       36       6.8       3       48       114
        09...     1110      .50    14.2       --       --       --       --       --       --       --       --       --
        09...     1115    14.3     14.8      8.3      979      260      43       38       6.9       3       48       118
       MAR
        15...     1120      .70     1.2      8.4     1020      260      44       37       6.9       3       47       113
        15...     1125      .70    10.0       --       --       --       --       --       --       --       --       --
        15...     1130    14.3     15.3      8.3     1020      270      45       38       6.8       3       47       115
       MAY
        12...     1100      .00      --      8.4      879      240      42       33       5.8       3       47       101
        12...     1105    16.5       --      8.4      879      240      43       33       5.9       3       46       100
        12...     1110      .00     1.8       --       --       --       --       --       --       --       --       --
       JUN
        18...     0850      .00      .20     8.5      890      240      41       33       6.0       3       47       100
        18...     0855    16.8     17.0      8.5      889      240      41       33       5.6       3       46        97
        18...     0900      .00      .60      --       --       --       --       --       --       --       --       --
       JUL
        29...     1020      .00      --      8.6      848      240      41       33       5.7       3       47        98
        29...     1025    16.2       --      8.4      872      240      41       33       5.7       3       47       101
        29...     1030      .00     6.7       --       --       --       --       --       --       --       --       --
       AUG
        17...     1035      .00      --      8.5      874      240      40       34       6.1       3       47       102
        17...     1040      .00     2.0       --       --       --       --       --       --       --       --       --
        17...     1045    10.9       --      8.5      874      240      41       34       6.2       3       47       101
       SEP
        10...     1155      .00      --      8.6      892      230      38       32       6.1       3       48       100
        10...     1200    15.5       --      8.6      890      230      38       33       6.3       3       48       101
        10...     1205      .00     2.4       --       --       --       --       --       --       --       --       --


                        ANC                                         NITRO-   NITRO-   NITRO-                     NITRO-
                      UNFLTRD   CHLO-    FLUO-   SILICA,             GEN,   GEN,AM-    GEN,    NITRO-             GEN,
                      TIT 4.5   RIDE,    RIDE,    DIS-    SULFATE  AMMONIA  MONIA +  NO2+NO3    GEN,    NITRO-  NITRITE
                        LAB     DIS-      DIS-    SOLVED   DIS-      DIS-   ORGANIC    DIS-   ORGANIC    GEN,     DIS-
                       (MG/L    SOLVED   SOLVED   (MG/L    SOLVED   SOLVED   TOTAL    SOLVED   TOTAL    TOTAL    SOLVED
              DATE      AS      (MG/L    (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                       CACO3)   AS CL)   AS F)    SIO2)   AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)    AS N)
                      (90410)  (00940)  (00950)  (00955)  (00945)  (00608)  (00625)  (00631)  (00605)  (00600)  (00613)

          OCT
            21...       211      13        .68     3.6      250      .026      .60    <.050      .57      --     <.010
            21...       212      13        .66     3.8      250      .034      .58    <.050      .55      --     <.010
          DEC
            04...       212      13        .62     3.3      250      .027      .44    <.050      .42      --     <.010
            04...       212      13        .59     3.1      250      .025      .51    <.050      .48      --     <.010
            04...        --       --       --       --       --       --       --       --       --       --       --
          FEB
            09...       230      14        .65     3.6      280      .029      .47    <.050      .44      --     <.010
            09...        --       --       --       --       --       --       --       --       --       --       --
            09...       231      14        .64     4.4      270      .090      .55     .070      .46      .62    <.010
          MAR
            15...       230      14        .66     3.7      270       --       --       --       --       --       --
            15...        --       --       --       --       --       --       --       --       --       --       --
            15...       239      14        .66     4.5      280       --       --       --       --       --       --
          MAY
            12...       202      12        .58     3.3      230      .021      .53    <.050      .51      --     <.010
            12...       203      12        .57     3.1      230     <.020      .77    <.050      --       --     <.010
            12...        --       --       --       --       --       --       --       --       --       --       --
          JUN
            18...       207      12        .59     1.7      240     <.020      .57    <.050      --       --     <.010
            18...       164      12        .57     1.9      240     <.020      .50    <.050      --       --     <.010
            18...        --       --       --       --       --       --       --       --       --       --       --
          JUL
            29...       202      13        .55     1.9      240     <.020      .44    <.050      --       --     <.010
            29...       202      13        .53     2.6      240      .088      .55    <.050      .46      --      .010
            29...        --       --       --       --       --       --       --       --       --       --       --
          AUG
            17...       200      12        .63     2.2      240     <.020      .48    <.050      --       --     <.010
            17...        --       --       --       --       --       --       --       --       --       --       --
            17...       103      12        .60     2.2      240     <.020      .49    <.050      --       --     <.010
          SEP
            10...       208      13        .57     2.7      250     <.020      .54    <.050      --       --     <.010
            10...       208      13        .57     2.7      250     <.020      .52    <.050      --       --     <.010
            10...        --       --       --       --       --       --       --       --       --       --       --

                       PHOS-            SOLIDS,  SOLIDS,           CHLOR-A  CHLOR-B
                      PHORUS            RESIDUE  SUM OF             PHYTO-   PHYTO-            MANGA-  CARBON,
                       ORTHO,   PHOS-   AT 180   CONSTI-            PLANK-   PLANK-   IRON,    NESE,   ORGANIC  CARBON,
                       DIS-    PHORUS    DEG. C  TUENTS,    TUR-     TON      TON      DIS-     DIS-    DIS-    ORGANIC
                      SOLVED    TOTAL     DIS-     DIS-     BID-   CHROMO   CHROMO    SOLVED   SOLVED  SOLVED    TOTAL
              DATE    (MG/L     (MG/L    SOLVED   SOLVED    ITY    FLUOROM  FLUOROM   (UG/L    (UG/L    (MG/L    (MG/L
                      AS P)     AS P)    (MG/L)   (MG/L)   (NTU)    (UG/L)   (UG/L)   AS FE)   AS MN)   AS C)    AS C)
                      (00671)  (00665)  (70300)  (70301)  (00076)  (70953)  (70954)  (01046)  (01056)  (00681)  (00680)

          OCT
            21...      <.010     .015     613      574      1.5     3.10     <.100     E5.9     4.2      5.4      6.0
            21...      <.010     .021     614      573      2.0       --       --     <10      E3.9      5.4      5.8
          DEC
            04...       .011     .020     616      578      1.1       --       --     <10      <3.0       --     12
            04...       .013     .026     617      578      1.1       --       --     <10       4.6       --     12
            04...        --       --       --       --       --      .540    <.100      --       --       --       --
          FEB
            09...      <.010    <.050     669      632       .58      --       --     <10      E2.8       --      6.3
            09...        --       --       --       --       --     <.100    <.100      --       --       --       --
            09...       .011    <.050     664      637       .82      --       --     <10      33         --      5.9
          MAR
            15...        --       --      655      631       .92      --       --     <10       3.2       --      6.3
            15...        --       --       --       --       --      .210    <.100      --       --       --       --
            15...        --       --      689      646       .69      --       --     <10      10         --      6.1
          MAY
            12...       .011    <.050     582      554       --       --       --     <10      E1.7       --      5.2
            12...       .011    <.050     582      555       --       --       --     <10      E1.7       --      6.1
            12...        --       --       --       --       --     1.80     <.100      --       --       --       --
          JUN
            18...      <.010    E.032     589      559      2.5       --       --     <10      <3.0       --      5.8
            18...      <.010    E.034     589      530      3.5       --       --     <10      E2.8       --      6.3
            18...        --       --       --       --       --      .780    <.100      --       --       --       --
          JUL
            29...      <.010    <.050     576      557      2.4       --       --      12      E2.3       --       --
            29...      <.010    <.050     579      555      2.0       --       --     <10      <3.0       --       --
            29...        --       --       --       --       --      .690    <.100      --       --       --       --
          AUG
            17...       .017    <.050     570      559      3.1       --       --      E6.2    <3.0       --      5.9
            17...        --       --       --       --       --      .900    <.100      --       --       --       --
            17...      <.010    <.050     574      501      3.6       --       --      E8.3    <3.0       --      4.1
          SEP
            10...      <.010    <.050     577      563      2.7       --       --     <10      E1.4       --      5.3
            10...      <.010    <.050     568      565      8.5       --       --     <10       4.1       --      4.7
            10..         --       --       --       --       --     4.30     <.100     --        --       --       --

                                                                                   PH
                                                                         SPE-     WATER
                                              ELEV-                      CIFIC    WHOLE
                                              ATION    RESER-    SAM-    CON-     FIELD   TEMPER-    TUR-
                                              ABOVE     VOIR    PLING    DUCT-   (STAND-   ATURE     BID-
                            DATE      TIME     NGVD    DEPTH    DEPTH    ANCE      ARD     WATER     ITY
                                              (FEET)   (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (NTU)
                                             (72020)  (72025)  (00098)  (00095)  (00400)  (00010)  (00076)

                        OCT
                          21...       1015   1845.50   50.5       .00     950      8.5      8.2     14
                          21...       1016      --       --      1.2      951      8.5      8.2     15
                          21...       1017      --       --      2.7      952      8.5      8.2     15
                          21...       1018      --       --      4.9      953      8.5      8.2     15
                          21...       1019      --       --      7.5      953      8.5      8.2     15
                          21...       1020      --       --      9.8      953      8.5      8.2     15
                          21...       1021      --       --     11.5      953      8.5      8.2     14
                          21...       1022      --       --     14.1      954      8.5      8.2     16
                          21...       1023      --       --     15.4      954      8.5      8.2     15
                        DEC
                          04...       1125   1845.10   49.2       .00     874      7.8      1.2     13
                          04...       1126      --       --      2.0      875      7.9      1.2     13
                          04...       1127      --       --      4.0      876      8.2      1.2     12
                          04...       1128      --       --      6.0      876      8.3      1.2     13
                          04...       1129      --       --      8.0      876      8.4      1.2     12
                          04...       1130      --       --     10.0      877      8.4      1.1     13
                          04...       1131      --       --     12.0      876      8.4      1.2     12
                        FEB
                          09...       1140   1845.20   48.5       .50    1080      8.1       .0     11
                          09...       1141      --       --      1.0      997      8.4       .6     10
                          09...       1142      --       --      2.0     1030      8.4      2.0     10
                          09...       1143      --       --      3.0      982      8.4      2.1      9.0
                          09...       1144      --       --      5.9     1030      8.3      2.5      9.0
                          09...       1145      --       --      8.8     1040      8.3      2.7      9.0
                          09...       1146      --       --     11.2     1050      8.3      2.9      9.0
                          09...       1147      --       --     13.5     1070      8.2      3.2      9.0
                          09...       1148      --       --     14.8     1070      8.2      3.5     10
                        MAR
                          15...       1110   1845.20   50.2       .70    1080      8.1       .3     13
                          15...       1111      --       --      1.4     1060      8.3      1.3     13
                          15...       1112      --       --      3.1     1040      8.4      2.5     12
                          15...       1113      --       --      5.6     1050      8.4      2.9     12
                          15...       1114      --       --      8.2     1060      8.4      3.0     11
                          15...       1115      --       --     10.8     1060      8.4      3.2     12
                          15...       1116      --       --     13.1     1080      8.3      3.6     12
                          15...       1117      --       --     15.3     1120      8.1      4.3     14
                        MAY
                          12...       1040   1847.40   54.1       .00     884      8.4      9.0      9.0
                          12...       1042      --       --      2.0      888      8.5      9.0      9.0
                          12...       1044      --       --      4.0      890      8.5      8.9      9.0
                          12...       1046      --       --      6.0      890      8.5      8.9      8.0
                          12...       1048      --       --      8.0      889      8.5      8.9      9.0
                          12...       1050      --       --     10.0      890      8.6      8.9      9.0
                          12...       1052      --       --     12.0      890      8.6      8.9      9.0
                          12...       1054      --       --     14.0      891      8.6      8.9      9.0
                          12...       1056      --       --     16.0      890      8.6      8.8     11
                          12...       1058      --       --     16.5      890      8.6      8.9      9.0
                        JUN
                          18...       0830   1846.90   56.7       .00     874      8.6     18.2      5.0
                          18...       0831      --       --      1.0      847      8.6     18.2      5.0
                          18...       0832      --       --      2.0      874      8.6     18.2      5.0
                          18...       0833      --       --      3.0      873      8.6     18.1      5.0
                          18...       0834      --       --      4.0      873      8.6     18.1      5.0
                          18...       0835      --       --      5.0      873      8.6     18.0      5.0
                          18...       0836      --       --      6.0      873      8.5     17.9      5.0
                          18...       0837      --       --      7.0      872      8.5     17.9      4.0
                          18...       0838      --       --      8.0      873      8.5     17.9      4.0
                          18...       0839      --       --      9.0      872      8.5     17.8      5.0
                          18...       0840      --       --     10.0      872      8.5     17.8      5.0
                          18...       0841      --       --     11.0      872      8.5     17.8      5.0
                          18...       0842      --       --     12.0      872      8.5     17.8      6.0
                          18...       0843      --       --     13.0      873      8.5     17.8      5.0
                          18...       0844      --       --     14.0      873      8.5     17.8      5.0
                          18...       0845      --       --     15.0      872      8.5     17.8      8.0
                          18...       0846      --       --     16.0      871      8.5     17.8     10
                          18...       0847      --       --     17.0      873      8.5     17.7     11
                          18...       0848      --       --     17.3      873      8.3     17.6     13
                        JUL
                          29...       1010   1846.70   53.1       .00     860      8.6     23.3      1.0
                          29...       1011      --       --      1.0      861      8.6     23.1      1.0
                          29...       1012      --       --      2.0      867      8.6     22.9      2.0
                          29...       1013      --       --      4.0      867      8.5     22.5      2.0
                          29...       1014      --       --      6.0      871      8.5     22.4      4.0
                          29...       1015      --       --      9.0      871      8.5     22.2      7.0
                          29...       1016      --       --     12.0      869      8.5     21.9      6.0
                          29...       1017      --       --     15.0      868      8.3     20.9     23
                          29...       1018      --       --     16.2      870      8.1     20.7     30

                                             OXYGEN,   BARO-                               WIND
                                               DIS-    METRIC            TRANS-            DIREC-
                                              SOLVED   PRES-              PAR-              TION    WIND
                                    OXYGEN,   (PER-     SURE   ICE        ENCY   TEMPER-   (DEG.    SPEED
                                      DIS-     CENT     (MM    THICK-   (SECCHI   ATURE     FROM    (MILES
                            DATE     SOLVED   SATUR-     OF    NESS      DISK)     AIR      TRUE     PER
                                     (MG/L)   ATION)    HG)    (FEET)     (IN)   (DEG C)   NORTH)   HOUR)
                                    (00300)  (00301)  (00025)  (82130)  (00077)  (00020)  (00036)  (00035)

                        OCT
                          21...      11.1      102      710       --      83.0     4.0      220      7.0
                          21...      11.0       --       --       --       --       --       --       --
                          21...      11.0       --       --       --       --       --       --       --
                          21...      10.9       --       --       --       --       --       --       --
                          21...      10.9       --       --       --       --       --       --       --
                          21...      10.9       --       --       --       --       --       --       --
                          21...      10.8       --       --       --       --       --       --       --
                          21...      10.8       --       --       --       --       --       --       --
                          21...      10.8       --       --       --       --       --       --       --
                        DEC
                          04...      12.9       96      723       --     130      -1.0       75     12
                          04...      12.9       --       --       --       --       --       --       --
                          04...      12.9       --       --       --       --       --       --       --
                          04...      12.9       --       --       --       --       --       --       --
                          04...      12.9       --       --       --       --       --       --       --
                          04...      12.9       --       --       --       --       --       --       --
                          04...      12.8       --       --       --       --       --       --       --
                        FEB
                          09...      12.8       94      710      1.80    283       1.0        0     <5.0
                          09...      13.4       --       --       --       --       --       --       --
                          09...      12.8       --       --       --       --       --       --       --
                          09...      13.3       --       --       --       --       --       --       --
                          09...      12.8       --       --       --       --       --       --       --
                          09...      12.7       --       --       --       --       --       --       --
                          09...      12.9       --       --       --       --       --       --       --
                          09...       9.6       --       --       --       --       --       --       --
                          09...       8.4       --       --       --       --       --       --       --
                        MAR
                          15...      14.1      106      703      2.30    197       7.0      360     <5.0
                          15...      13.4       --       --       --       --       --       --       --
                          15...      12.7       --       --       --       --       --       --       --
                          15...      11.9       --       --       --       --       --       --       --
                          15...      11.4       --       --       --       --       --       --       --
                          15...      10.9       --       --       --       --       --       --       --
                          15...       8.4       --       --       --       --       --       --       --
                          15...       3.1       --       --       --       --       --       --       --
                        MAY
                          12...      10.5       98      710       --      36.0    13.0      180     <5.0
                          12...      10.3       --       --       --       --       --       --       --
                          12...      10.2       --       --       --       --       --       --       --
                          12...      10.2       --       --       --       --       --       --       --
                          12...      10.1       --       --       --       --       --       --       --
                          12...      10.2       --       --       --       --       --       --       --
                          12...      10.2       --       --       --       --       --       --       --
                          12...      10.1       --       --       --       --       --       --       --
                          12...      10.1       --       --       --       --       --       --       --
                          12...      10.0       --       --       --       --       --       --       --
                        JUN
                          18...       8.6       98      710       --      12.0    18.0      150      6.0
                          18...       8.4       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.6       --       --       --       --       --       --       --
                          18...       8.6       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.6       --       --       --       --       --       --       --
                          18...       8.6       --       --       --       --       --       --       --
                          18...       8.6       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       8.4       --       --       --       --       --       --       --
                          18...       8.5       --       --       --       --       --       --       --
                          18...       4.5       --       --       --       --       --       --       --
                        JUL
                          29...       8.3      107      701       --     132      27.0        0     <5.0
                          29...       8.4       --       --       --       --       --       --       --
                          29...       8.4       --       --       --       --       --       --       --
                          29...       8.3       --       --       --       --       --       --       --
                          29...       8.2       --       --       --       --       --       --       --
                          29...       7.9       --       --       --       --       --       --       --
                          29...       7.5       --       --       --       --       --       --       --
                          29...       5.1       --       --       --       --       --       --       --
                          29...       3.1       --       --       --       --       --       --       --

                                                                                   PH
                                                                         SPE-     WATER
                                              ELEV-                      CIFIC    WHOLE
                                              ATION    RESER-    SAM-    CON-     FIELD   TEMPER-    TUR-
                                              ABOVE     VOIR    PLING    DUCT-   (STAND-   ATURE     BID-
                            DATE      TIME     NGVD    DEPTH    DEPTH    ANCE      ARD     WATER     ITY
                                              (FEET)   (FEET)    (M)    (US/CM)   UNITS)  (DEG C)   (NTU)
                                             (72020)  (72025)  (00098)  (00095)  (00400)  (00010)  (00076)

                        AUG
                          17...       1024   1847.10   48.2       .00     823      8.6     20.6      8.0
                          17...       1025      --       --      1.0      823      8.6     20.6      8.0
                          17...       1026      --       --      3.0      823      8.6     20.5      8.0
                          17...       1027      --       --      5.0      823      8.6     20.5      9.0
                          17...       1028      --       --      7.0      824      8.6     20.5      9.0
                          17...       1029      --       --      9.0      824      8.6     20.5      8.0
                          17...       1030      --       --     10.9      824      8.6     20.5     11
                        SEP
                          10...       1145   1846.80   50.8       .00     822      8.7     16.8      6.0
                          10...       1146      --       --      1.0      824      8.7     16.8      6.0
                          10...       1147      --       --      3.0      823      8.7     16.6      9.0
                          10...       1148      --       --      6.0      825      8.7     16.5     14
                          10...       1149      --       --      9.0      826      8.7     16.4      9.0
                          10...       1150      --       --     12.0      826      8.7     16.4      8.0
                          10...       1151      --       --     15.5      827      8.7     16.4     12


                                                 OXYGEN,   BARO-                      WIND
                                                   DIS-    METRIC   TRANS-            DIREC-
                                                  SOLVED   PRES-     PAR-              TION    WIND
                                        OXYGEN,   (PER-     SURE     ENCY   TEMPER-   (DEG.    SPEED
                                          DIS-     CENT     (MM    (SECCHI   ATURE     FROM    (MILES
                                DATE     SOLVED   SATUR-     OF     DISK)     AIR      TRUE     PER
                                         (MG/L)   ATION)    HG)      (IN)   (DEG C)   NORTH)   HOUR)
                                        (00300)  (00301)  (00025)  (00077)  (00020)  (00036)  (00035)

                            AUG
                              17...       8.5      102      713      39.0    19.0      210     <5.0
                              17...       8.5       --       --       --       --       --       --
                              17...       8.5       --       --       --       --       --       --
                              17...       8.5       --       --       --       --       --       --
                              17...       8.4       --       --       --       --       --       --
                              17...       8.4       --       --       --       --       --       --
                              17...       8.4       --       --       --       --       --       --
                            SEP
                              10...      10.2      113      710      47.0    15.0       70     <5.0
                              10...      10.1       --       --       --       --       --       --
                              10...      10.1       --       --       --       --       --       --
                              10...      10.1       --       --       --       --       --       --
                              10...       9.9       --       --       --       --       --       --
                              10...       9.8       --       --       --       --       --       --
                              10...        --       --       --       --       --       --       --
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