RED RIVER OF THE NORTH BASIN

                                          05056260  LAKE IRVINE NEAR CHURCHS FERRY, ND

LOCATION.--Lat 4816'57", long 9910'25", in SE1/4SW1/4SW1/4 sec.32, T.156 N., R.66 W., Ramsey County, Hydrologic Unit 09020201,
   at south end of lake 11/4 mi northwest of Churchs Ferry.

DRAINAGE AREA.--2,120 mi2, approximately, of which about 500 mi2 is probably noncontributing.


                                                     WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water years 1966-87, 1993 to current year.

                                 WATER-QUALITY DATA, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000

                                    DEPTH    DEPTH     SPE-     PH                ANC
                                    TO TOP  TO BOT-   CIFIC    WATER    HARD-   UNFLTRD            MAGNE-
                                      OF    TOM OF     CON-    WHOLE    NESS    TIT 4.5  CALCIUM    SIUM,  SODIUM,
                                    SAMPLE   SAMPLE   DUCT-     LAB     TOTAL     LAB     DIS-      DIS-    DIS-
                                    INTER-   INTER-   ANCE    (STAND-   (MG/L    (MG/L    SOLVED   SOLVED  SOLVED
                  DATE      TIME   VAL(IN   VAL(IN     LAB      ARD      AS       AS      (MG/L    (MG/L    (MG/L
                                   METERS)  METERS)  (US/CM)   UNITS)   CACO3)   CACO3)   AS CA)   AS MG)   AS NA)
                                   (82047)  (82048)  (90095)  (00403)  (00900)  (90410)  (00915)  (00925)  (00930)

              OCT
                18...       1355     .00      .60      872       --      400      260      83.0    46.0     48.0
              FEB
                15...       1400     .60     2.4      1190      8.3      540      366     110      64.0     68.0
              MAY
                08...       1350     .00     2.3      1020      8.0      460      289      95.0    53.0     57.0
              AUG
                01...       1205     .00     2.6      1120      7.9      460      314      91.0    57.0     69.0


                                                                                SOLIDS,  SOLIDS,            NITRO-
                                    SODIUM   POTAS-            CHLO-    FLUO-   SUM OF   RESIDUE  SOLIDS,    GEN,
                                      AD-     SIUM,  SULFATE   RIDE,    RIDE,   CONSTI-  AT 180     DIS-   NITRITE
                                    SORP-     DIS-    DIS-     DIS-      DIS-   TUENTS,   DEG. C   SOLVED    DIS-
                                     TION    SOLVED   SOLVED   SOLVED   SOLVED    DIS-     DIS-    (TONS    SOLVED
                  DATE     SODIUM   RATIO    (MG/L    (MG/L    (MG/L    (MG/L    SOLVED   SOLVED    PER     (MG/L
                          PERCENT            AS K)   AS SO4)   AS CL)   AS F)    (MG/L)   (MG/L)   AC-FT)   AS N)
                          (00932)  (00931)  (00935)  (00945)  (00940)  (00950)  (70301)  (70300)  (70303)  (00613)

              OCT
                18...       20        1      17.0      230     18.0      .2       599      636      .86     <.010
              FEB
                15...       21        1      21.0      320     28.0      .3       831      878     1.19     <.010
              MAY
                08...       21        1      17.0      260     20.0      .2       677      733     1.00      .010
              AUG
                01...       24        1      20.0      290     21.0      .2       738      828     1.13     <.010


                           NITRO-   NITRO-   NITRO-            NITRO-                     PHOS-
                            GEN,     GEN,     GEN,    NITRO-  GEN,AM-                    PHORUS
                          NITRATE  NO2+NO3  AMMONIA    GEN,   MONIA +   NITRO-   PHOS-    ORTHO,  ARSENIC   IRON,
                            DIS-     DIS-     DIS-   ORGANIC  ORGANIC    GEN,   PHORUS    DIS-      DIS-     DIS-
                           SOLVED   SOLVED   SOLVED   TOTAL    TOTAL    TOTAL    TOTAL   SOLVED    SOLVED   SOLVED
                  DATE     (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L   (MG/L     (UG/L    (UG/L
                           AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS P)   AS P)     AS AS)   AS FE)
                          (00618)  (00631)  (00608)  (00605)  (00625)  (00600)  (00665)  (00671)  (01000)  (01046)

              OCT
                18...        --      .118    <.020      --      1.8      1.9     .247     .118      5.0      80
              FEB
                15...        --     <.050     .022     2.0      2.0       --     .092     .016      3.0      20
              MAY
                08...       .043     .053     .165     1.8      2.0      2.0     .250     .082      2.0      50
              AUG
                01...        --     <.050     .094     1.4      1.5       --     .349     .353      8.0      40


                                                                                             CHLOR-A  CHLOR-B
                                                 MANGA-            MOLYB-   SELE-    STRON-   PHYTO-   PHYTO-
                               LEAD,   LITHIUM   NESE,   MERCURY   DENUM,   NIUM,     TIUM,   PLANK-   PLANK-
                                DIS-     DIS-     DIS-     DIS-     DIS-     DIS-     DIS-     TON      TON
                               SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED  CHROMO   CHROMO
                      DATE     (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L   FLUOROM  FLUOROM
                               AS PB)   AS LI)   AS MN)   AS HG)   AS MO)   AS SE)   AS SR)   (UG/L)   (UG/L)
                              (01049)  (01130)  (01056)  (71890)  (01060)  (01145)  (01080)  (70953)  (70954)

                  OCT
                    18...        1      50.0       10      <.1       2       1.0      360       --       --
                  FEB
                    15...       <1      70.0       80      <.1      <1      <1.0      420       --       --
                  MAY
                    08...       <1      60.0      180       .1       1      <1.0      340      6.0       .9
                  AUG
                    01...        1      70.0      120      <.1       2      <1.0      430     46.8       .2


                                                                             PH
                                                                   SPE-     WATER
                                                DEPTH              CIFIC    WHOLE
                                                OF         SAM-    CON-     FIELD   TEMPER-  OXYGEN,
                                                LAKE      PLING    DUCT-   (STAND-   ATURE     DIS-
                               DATE      TIME   MAXIMUM   DEPTH    ANCE      ARD     WATER    SOLVED
                                                (FEET)     (M)    (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                (82016)  (00098)  (00095)  (00400)  (00010)  (00300)

                           OCT
                             18...       1345     8.20     .00      925      8.4      6.4     12.5
                             18...       1346      --      .50      925      8.4      6.4     12.3
                             18...       1347      --     1.0       925      8.4      6.4     12.2
                             18...       1348      --     1.5       925      8.4      6.4     12.1
                             18...       1349      --     2.0       925      8.4      6.4     12.0
                             18...       1350      --     2.5       924      8.4      6.4     12.0
                           FEB
                             15...       1350     7.90     .60     1250      8.0      2.6     19.9
                             15...       1351      --     1.0      1240      8.0      3.3     19.5
                             15...       1352      --     1.5      1240      8.0      3.6     16.8
                             15...       1353      --     2.0      1250      8.0      4.0      7.4
                             15...       1354      --     2.4      1270      7.8      4.4      2.2
                           MAY
                             08...       1345     7.50     .00     1060      8.2     15.3      8.9
                             08...       1346      --      .80     1060      8.2     15.3      8.8
                             08...       1347      --     1.4      1060      8.2     15.3      8.7
                             08...       1348      --     2.1      1060      8.2     15.3      8.7
                             08...       1349      --     2.3      1060      8.2     15.3      8.6
                           AUG
                             01...       1200     8.50     .00     1120      7.9     25.0      8.1
                             01...       1201      --      .70     1120      8.0     24.9      8.0
                             01...       1202      --     1.4      1120      8.0     24.8      6.8
                             01...       1203      --     2.1      1120      8.0     24.6      5.8
                             01...       1204      --     2.6      1130      8.0     24.4      4.2


                                       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)    METERS     (IN)   (DEG C)   NORTH)   HOUR)
                                       (00301)  (00025)  (82131)  (00077)  (00020)  (00036)  (00035)

                           OCT
                             18...       107      727       --     12.0      7.0      320     12
                             18...        --       --       --       --       --       --       --
                             18...        --       --       --       --       --       --       --
                             18...        --       --       --       --       --       --       --
                             18...        --       --       --       --       --       --       --
                             18...        --       --       --       --       --       --       --
                           FEB
                             15...       154      727       .60    10.0     -4.0      360      8.0
                             15...        --       --       --       --       --       --       --
                             15...        --       --       --       --       --       --       --
                             15...        --       --       --       --       --       --       --
                             15...        --       --       --       --       --       --       --
                           MAY
                             08...        94      723       --     22.0     13.0      300     12
                             08...        --       --       --       --       --       --       --
                             08...        --       --       --       --       --       --       --
                             08...        --       --       --       --       --       --       --
                             08...        --       --       --       --       --       --       --
                           AUG
                             01...       103      722       --     25.0     25.0      330     <5.0
                             01...        --       --       --       --       --       --       --
                             01...        --       --       --       --       --       --       --
                             01...        --       --       --       --       --       --       --
                             01...        --       --       --       --       --       --       --

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