MISSOURI RIVER MAIN STEM

                                          06338490  MISSOURI RIVER AT GARRISON DAM, ND

LOCATION.--Lat 4730'08", long 10125'50", in S1/2 sec.31, T.147 N., R.84 W., Mercer County, Hydrologic Unit 10130101, in
   control structure of Garrison Dam, 2.5 mi west of Riverdale, 14 mi upstream from Knife River, and at mile 1,389.9.

DRAINAGE AREA.--181,400 mi2, approximately.

                                                    WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1969 to current year.

GAGE.--Flow meter and gate readings.

REMARKS.--Records good. Many diversions above station. Flow regulated by Garrison Dam. Prior to October 1969 records were
   obtained at a site 9.1 mi downstream. Discharges at the downstream site were generally about 7 percent greater than those
   furnished by the U.S. Army Corps of Engineers for the present site.

COOPERATION.--Records furnished by the U.S. Army Corps of Engineers.

                          DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
                                                       DAILY MEAN VALUES

        DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

          1     26200    17700    20000    21400    24000    24200    16300    18300    25500    23800    23600    23200
          2     26700    17500    20300    21200    23900    24200    17300    18100    24900    23700    23500    22900
          3     23100    18000    18200    20900    24600    23900    17100    18000    25800    23800    23200    23400
          4     20500    16800    18400    20000    24100    22500    20100    18000    25200    23900    23200    23400
          5     18300    16800    17700    19900    24100    22200    19900    18000    25500    24000    22900    23300

          6     18500    16800    17900    20100    24100    20300    20100    17800    25400    23600    22900    23200
          7     17800    17400    18000    19800    24100    19700    20000    17900    25300    23500    23200    23000
          8     16900    17000    18300    19900    24100    18200    20000    17800    25200    23400    23100    23000
          9     17800    16800    18300    19600    24400    17200    20100    17700    25400    23600    23000    23100
         10     18100    18300    18300    19700    24300    17300    20100    17700    23700    23400    23000    20200

         11     17600    17100    18400    20000    24200    17300    20200    17800    23600    23300    23200    17200
         12     18100    17200    18100    20000    23900    17200    20200    17700    23700    23100    23100    15100
         13     18300    17500    18100    20100    24000    17600    20100    20500    24000    23500    23000    15200
         14     17600    17200    18200    20000    23900    17300    20300    23000    23800    23500    23000    15300
         15     18000    16600    18000    19000    24100    17000    20100    25500    24100    23400    23600    14800

         16     19500    18000    17800    19100    24000    17100    20200    25700    24000    23400    23200    14700
         17     17900    17900    18100    19700    24000    17300    20200    25700    23700    23300    23200    15800
         18     17700    17100    21300    19900    23900    17100    20200    25500    23800    23500    23100    16800
         19     18300    17300    21500    20200    24400    17000    20000    25400    23800    23600    23200    17300
         20     17600    17300    22400    19900    24500    16800    20200    25400    24000    23500    23200    15700

         21     17700    17300    21300    20900    24100    17100    20000    24700    24000    23400    23200    15200
         22     18200    17600    20000    21000    24000    17000    20000    25700    23900    23400    23000    15200
         23     19100    17200    19800    21100    23700    16900    20000    25800    24100    23500    23000    14800
         24     17700    17200    20200    20800    24100    17000    19100    25500    23800    23400    22900    14800
         25     18400    17300    20300    22200    23900    17100    20100    25300    23400    23600    22900    15200

         26     19200    16900    20100    22300    24000    16800    19900    25700    23900    23700    23000    15500
         27     19200    17900    21000    21900    24000    17100    19900    25500    23800    23800    23000    15500
         28     17600    17900    21600    22800    23700    17100    17900    25500    23800    23500    23100    15100
         29     17400    19200    21500    23300    24200    17000    17600    25100    23900    23500    23300    15400
         30     17700    19700    21900    23100      ---    17100    18000    25600    23600    23600    23200    15200
         31     16700      ---    21300    24100      ---    17000      ---    25500      ---    23600    22900      ---

        TOTAL  583400   524500   606300   643900   698300   568600   585200   691400   728600   729800   716900   538500
        MEAN    18820    17480    19560    20770    24080    18340    19510    22300    24290    23540    23130    17950
        MAX     26700    19700    22400    24100    24600    24200    20300    25800    25800    24000    23600    23400
        MIN     16700    16600    17700    19000    23700    16800    16300    17700    23400    23100    22900    14700
        AC-FT 1157000  1040000  1203000  1277000  1385000  1128000  1161000  1371000  1445000  1448000  1422000  1068000

        STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1970 - 2000, BY WATER YEAR (WY)

        MEAN    20140    21170    21180    24030    25330    20460    19870    22620    24590    26000    25330    21530
        MAX     49450    42350    29530    30500    31500    28210    37500    38490    42430    61800    54130    46570
        (WY)     1998     1998     1970     1979     1976     1983     1972     1972     1997     1975     1975     1997
        MIN      9945    10110    13550    14260    13490    10370    10280    10560    11080    13220    15790    10990
        (WY)     1994     1993     1994     1994     1994     1993     1993     1986     1995     1995     1993     1990

        SUMMARY STATISTICS           FOR 1999 CALENDAR YEAR        FOR 2000 WATER YEAR           WATER YEARS 1970 - 2000

        ANNUAL TOTAL                     8934400                    7615400
        ANNUAL MEAN                        24480                      20810                      22680
        HIGHEST ANNUAL MEAN                                                                      33000              1975
        LOWEST ANNUAL MEAN                                                                       13710              1993
        HIGHEST DAILY MEAN                 30200     Jun  7           26700     Oct  2           65200       Jul 25 1975
        LOWEST DAILY MEAN                  16600     Nov 15           14700     Sep 16            4100       Mar 25 1997
        ANNUAL SEVEN-DAY MINIMUM           17100     Nov  3           15200     Sep 22            7960       Mar 22 1997
        ANNUAL RUNOFF (AC-FT)           17720000                   15110000                   16430000
        10 PERCENT EXCEEDS                 29500                      24200                      32600
        50 PERCENT EXCEEDS                 25000                      20300                      21100
        90 PERCENT EXCEEDS                 17800                      17000                      13400
        
        
                                                     WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water year 1972 to current year.

REMARKS.--Quality assurance samples also collected at this location.

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

                          DIS-     DIS-    BARO-   OXYGEN,             PH       PH       SPE-
                        CHARGE,  CHARGE,   METRIC    DIS-             WATER    WATER    CIFIC    SPE-
                           IN     INST.    PRES-    SOLVED            WHOLE    WHOLE     CON-    CIFIC
                         CUBIC    CUBIC     SURE    (PER-   OXYGEN,   FIELD     LAB     DUCT-    CON-    TEMPER-  TEMPER-
                          FEET     FEET     (MM      CENT     DIS-   (STAND-  (STAND-   ANCE     DUCT-    ATURE    ATURE
       DATE      TIME     PER      PER       OF     SATUR-   SOLVED    ARD      ARD      LAB     ANCE      AIR     WATER
                         SECOND   SECOND    HG)     ATION)   (MG/L)   UNITS)   UNITS)  (US/CM)  (US/CM)  (DEG C)  (DEG C)
                        (00060)  (00061)  (00025)  (00301)  (00300)  (00400)  (00403)  (90095)  (00095)  (00020)  (00010)

      OCT
       27...     1155      --     19000     719      112     11.5      8.1       --      635      650     12.0     11.3
      NOV
       09...     1030      --     20600     720      102     10.9      8.3      8.4      644      651     10.0      9.4
      FEB
       08...     1100      --     29500     713      105     13.9      8.0      8.0      651      654      7.0      1.2
      MAR
       22...     1100      --     18200     720      108     14.0      8.6       --      632      636     11.0      2.2
      MAY
       15...     1000      --     29200     717      115     13.1      8.4      8.4      604      630     14.0      7.1
      JUN
       06...     1040      --     29400     720      111     12.4      7.7       --      611      620     20.0      8.0
       29...     1030      --     26600     720      106     10.5      8.0      8.2      614      622     25.0     13.0
      JUL
       17...     1200    23300      --       --       --      9.3      7.8      7.7      613      635       --     13.2
      AUG
       16...     1010      --     25400     720       73      7.1      7.7       --      606      618     18.0     14.0
      SEP
       13...     1045      --     19300     719       95      8.8      8.1      8.2      617      625     15.9     16.1


                 UV       UV                                                                      ANC     ALKA-    ALKA-
               ABSORB-  ABSORB-   HARD-             MAGNE-   POTAS-   SODIUM                    UNFLTRD  LINITY   LINITY
                ANCE     ANCE     NESS    CALCIUM    SIUM,    SIUM,     AD-   SODIUM,           TIT 4.5  WAT.DIS  WAT DIS
               254 NM,  280 NM,   TOTAL    DIS-      DIS-     DIS-    SORP-    DIS-               LAB      FET    TOT FET
               WTR FLT  WTR FLT   (MG/L    SOLVED   SOLVED   SOLVED    TION   SOLVED             (MG/L     LAB     FIELD
       DATE    (UNITS   (UNITS     AS      (MG/L    (MG/L    (MG/L    RATIO    (MG/L    SODIUM    AS      CACO3   MG/L AS
                /CM)     /CM)     CACO3)   AS CA)   AS MG)   AS K)             AS NA)  PERCENT   CACO3)  (MG/L)    CACO3
               (50624)  (61726)  (00900)  (00915)  (00925)  (00935)  (00931)  (00930)  (00932)  (90410)  (29801)  (00418)

      OCT
       27...      --       --      220      52       21       3.9       2       58       36       160       --       --
      NOV
       09...     .079      --      200      47       19       3.7       2       55       37        --      157      153
      FEB
       08...     .079     .054     200      48       20       3.7       2       57       38        --      157      144
      MAR
       22...     .080     .056     200      47       19       3.6       2       53       36        --      152      141
      MAY
       15...     .072     .041     190      45       18       3.5       2       53       38        --      159      141
      JUN
       06...      --       --      190      45       18       3.2       2       48       35       150       --       --
       29...     .082     .058     190      44       19       3.4       2       52       37        --      148      145
      JUL
       17...      --       --      180      44       17       3.2       2       47       36       151       --       --
      AUG
       16...     .076     .059     190      46       18       3.4       2       51       36        --      156      137
      SEP
       13...      --       --      200      49       20       3.4       2       52       35       160       --       --


                ALKA-   BICAR-    CAR-                                         NITRO-   NITRO-            NITRO-   NITRO-
               LINITY   BONATE   BONATE    CHLO-    FLUO-   SILICA,           GEN,AM-  GEN,AM-   NITRO-    GEN,     GEN,
               WAT DIS   WATER    WATER    RIDE,    RIDE,    DIS-    SULFATE  MONIA +  MONIA +    GEN,   AMMONIA  NITRITE
               TOT IT   DIS IT   DIS IT    DIS-      DIS-    SOLVED   DIS-    ORGANIC  ORGANIC  AMMONIA    DIS-     DIS-
                FIELD    FIELD    FIELD    SOLVED   SOLVED   (MG/L    SOLVED   DIS.     TOTAL    TOTAL    SOLVED   SOLVED
       DATE    MG/L AS  MG/L AS  MG/L AS   (MG/L    (MG/L     AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                CACO3    HCO3      CO3     AS CL)   AS F)    SIO2)   AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)
               (39086)  (00453)  (00452)  (00940)  (00950)  (00955)  (00945)  (00623)  (00625)  (00610)  (00608)  (00613)

      OCT
       27...      --       --       --      9.2       --       --      170       --      .17      <.01      --       --
      NOV
       09...     155      189       .0      8.8       .6      4.7      160       .19     .20       --      .010     .001
      FEB
       08...     147      179       .0      8.1       .5      5.6      160       .18     .20       --      .004    <.001
      MAR
       22...     144      176       .0      7.9       .5      6.0      160       .26     .19       --     <.002     .001
      MAY
       15...     142      171      1        7.6       .5      6.2      150       .20     .20       --      .019     .004
      JUN
       06...      --       --       --      8.2       --       --      160       .09     .14      <.01    <.01       --
       29...     145      177       .0      7.8       .4      6.0      150       .22     .22       --      .008     .002
      JUL
       17...      --       --       --      8.3       --       --      150       .29     .33       .32    <.01       --
      AUG
       16...     138      168       .0      7.9       .5      6.0      150       .17     .17       --      .005     .001
      SEP
       13...      --       --       --      8.6       --       --      160       .12     .18      <.01    <.01       --


                NITRO-   NITRO-            NITRO-                                       PHOS-                     CARBON,
                 GEN,     GEN,    NITRO-    GEN,    NITRO-            NITRO-   PHOS-   PHORUS            CARBON,  ORGANIC
               NITRATE  NO2+NO3    GEN,   ORGANIC    GEN,    NITRO-    GEN    PHORUS    ORTHO,   PHOS-   ORGANIC  PARTIC-
                 DIS-     DIS-   NO2+NO3    DIS-   ORGANIC    GEN,    DIS-      DIS-    DIS-    PHORUS    DIS-    ULATE
                SOLVED   SOLVED   TOTAL    SOLVED   TOTAL    TOTAL   SOLVED    SOLVED  SOLVED    TOTAL   SOLVED    TOTAL
       DATE     (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L   (MG/L     (MG/L    (MG/L    (MG/L
                AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS P)   AS P)     AS P)    AS C)    AS C)
               (00618)  (00631)  (00630)  (00607)  (00605)  (00600)  (00602)  (00666)  (00671)  (00665)  (00681)  (00689)

      OCT
       27...      --       --      .05       --       --      .22       --     <.01       --     <.018      --       --
      NOV
       09...     .045     .046      --       .18      .19     .24       .24    <.006    <.001    E.006     3.4      <.2
      FEB
       08...      --      .074      --       .18      .19     .27       .25    E.003    <.001    <.008     3.4      <.2
      MAR
       22...     .060     .061      --       --       --      .25       .32    <.006    <.001    <.008     3.3      <.2
      MAY
       15...     .261     .26       --       .16      .19     .47       .44    <.006    <.001    E.006     3.5      <.2
      JUN
       06...      --      .07      .07       --       --      .21       .16    <.01       --     <.02       --       --
       29...     .036     .038      --       .21      .21     .26       .25    E.003     .001    <.008     3.3      <.2
      JUL
       17...      --      .02      .02       --       .01     .35       .31    <.01       --      .02       --       --
      AUG
       16...     .058     .059      --       .16      .17     .23       .23    <.006    <.001    <.008     3.4      <.2
      SEP
       13...      --      .06      .06       --       --      .24       .18     .01       --     <.02       --       --


                        SOLIDS,  SOLIDS,
               SOLIDS,  RESIDUE  SUM OF            ALUMI-                                        BERYL-
                 DIS-   AT 180   CONSTI-             NUM,    ANTI-   ARSENIC           BARIUM,    LIUM    BORON,  BORON,
                SOLVED   DEG. C  TUENTS,    TUR-    TOTAL    MONY,     DIS-   ARSENIC   TOTAL    TOTAL     DIS-    TOTAL
                (TONS     DIS-     DIS-     BID-   RECOVER   TOTAL    SOLVED   TOTAL   RECOVER  RECOVER   SOLVED  RECOVER
       DATE      PER     SOLVED   SOLVED    ITY     -ABLE    (UG/L    (UG/L    (UG/L    -ABLE    -ABLE    (UG/L    -ABLE
                 DAY)    (MG/L)   (MG/L)   (NTU)    (UG/L)   AS SB)   AS AS)   AS AS)   (UG/L)   (UG/L)   AS B)    (UG/L)
               (70302)  (70300)  (70301)  (00076)  (01104)  (01097)  (01000)  (01002)  (01009)  (00998)  (01020)  (00999)

      OCT
       27...    21200      --      414       --      110      <1        --       3       55       <1        --      149
      NOV
       09...    23100     416      395      1.3       --       --      E2        --       --       --     109        --
      FEB
       08...    33500     421      395       .8       --       --      E2        --       --       --     104        --
      MAR
       22...    19700     400      384       .7       --       --       2        --       --       --      98.4      --
      MAY
       15...    30700     389      371      1.6       --       --      E2        --       --       --      99.6      --
      JUN
       06...    29600      --      373       --       60      <1        --       2       50       <1        --      160
       29...    27400     382      367       .8       --       --      E2        --       --       --     105        --
      JUL
       17...    22700      --      360       --      <50      <1        --       2       46       <1        --      210
      AUG
       16...    27000     393      362       .3       --       --      E2        --       --       --      96.1      --
      SEP
       13...    20300      --      389       --       --       --       --       --       --       --       --       --


                               CHRO-                      IRON,                     MANGAN-            SELE-
                     CADMIUM   MIUM,   COPPER,   IRON,    TOTAL    LEAD,   LITHIUM    ESE    NICKEL,   NIUM,    SELE-
                      TOTAL    TOTAL    TOTAL     DIS-    RECOV-   TOTAL     DIS-    TOTAL    TOTAL     DIS-    NIUM,
                     RECOVER  RECOVER  RECOVER   SOLVED   ERABLE  RECOVER   SOLVED  RECOVER  RECOVER   SOLVED   TOTAL
             DATE     -ABLE    -ABLE    -ABLE    (UG/L    (UG/L    -ABLE    (UG/L   - ABLE    -ABLE    (UG/L    (UG/L
                      (UG/L)   (UG/L)   (UG/L)   AS FE)   AS FE)   (UG/L)   AS LI)   (UG/L)   (UG/L)   AS SE)   AS SE)
                     (01113)  (01118)  (01119)  (01046)  (01045)  (01114)  (01130)  (01123)  (01074)  (01145)  (01147)

         OCT
           27...       <1       <1        2        --      260      <1        --      <10       4        --       4
         NOV
           09...        --       --       --      <10       --       --      40        --       --      <2        --
         FEB
           08...        --       --       --      <10       --       --      38        --       --      <2        --
         MAR
           22...        --       --       --      <10       --       --      38        --       --      <2        --
         MAY
           15...        --       --       --      <10       --       --      38        --       --      <2        --
         JUN
           06...       <1       <1       <1        --       40      <1        --      <10       3        --      <1
           29...        --       --       --      <10       --       --      38        --       --      <2        --
         JUL
           17...       <1       <1        1        --       30      <1        --      <10       2        --      <1
         AUG
           16...        --       --       --      <10       --       --      31        --       --      <2        --
         SEP
           13...        --       --       --       --       80       --       --      <10       --       --       --


                                        THAL-                     2,6-DI-                                        BEN-
                               STRON-   LIUM,    VANA-             ETHYL    ACETO-   ALA-              ATRA-    FLUR-
                     SILVER,    TIUM,   TOTAL    DIUM,    ZINC,   ANILINE   CHLOR,   CHLOR,   ALPHA    ZINE,    ALIN
                      TOTAL     DIS-    RECOV-    DIS-    TOTAL   WAT FLT   WATER    WATER,    BHC     WATER,  WAT FLD
                     RECOVER   SOLVED   ERABLE   SOLVED  RECOVER   0.7 U    FLTRD    DISS,     DIS-    DISS,    0.7 U
             DATE     -ABLE    (UG/L    (UG/L    (UG/L    -ABLE   GF, REC    REC     REC,    SOLVED    REC     GF, REC
                      (UG/L)   AS SR)   AS TL)   AS V)    (UG/L)  (UG/L)    (UG/L)  (UG/L)   (UG/L)   (UG/L)   (UG/L)
                     (01079)  (01080)  (01128)  (01085)  (01094)  (82660)  (49260)  (46342)  (34253)  (39632)  (82673)

         OCT
           27...       <1        --      <1        --       2        --       --       --       --       --       --
         NOV
           09...        --      470       --      <10       --     <.003    <.002    <.002    <.002     .0076   <.002
         FEB
           08...        --      470       --      <10       --     <.003    <.002    <.002    <.002     .0071   <.002
         MAR
           22...        --      470       --      <10       --     <.003    <.002    <.002    <.002     .0067   <.002
         MAY
           15...        --      440       --      <10       --     <.003    <.002    <.002    <.002     .0046   <.002
         JUN
           06...       <1        --      <1        --      <1        --       --       --       --       --       --
           29...        --      440       --      <10       --     <.003    <.002    <.002    <.002     .0045   <.002
         JUL
           17...       <1        --      <1        --      21        --       --       --       --       --       --
         AUG
           16...        --      430       --      <10       --     <.003    <.002    <.002    <.002     .0055    .0042
         SEP
           13...        --       --       --       --       --       --       --       --       --       --       --


                                CAR-    CARBO-                             DEETHYL                     DISUL-
                      BUTYL-   BARYL    FURAN             CYANA-   DCPA     ATRA-                      FOTON    EPTC
                      ATE,     WATER    WATER    CHLOR-   ZINE,    WATER    ZINE,     DI-      DI-     WATER    WATER
                      WATER,   FLTRD    FLTRD   PYRIFOS   WATER,   FLTRD    WATER,  AZINON,   ELDRIN   FLTRD    FLTRD
                      DISS,    0.7 U    0.7 U     DIS-    DISS,    0.7 U    DISS,     DIS-     DIS-    0.7 U    0.7 U
             DATE     REC     GF, REC  GF, REC   SOLVED   REC     GF, REC   REC      SOLVED   SOLVED  GF, REC  GF, REC
                     (UG/L)   (UG/L)   (UG/L)    (UG/L)  (UG/L)   (UG/L)   (UG/L)    (UG/L)   (UG/L)  (UG/L)   (UG/L)
                     (04028)  (82680)  (82674)  (38933)  (04041)  (82682)  (04040)  (39572)  (39381)  (82677)  (82668)

         OCT
           27...        --       --       --       --       --       --       --       --       --       --       --
         NOV
           09...      <.002    <.003    <.003    <.004    <.004    <.002    E.0039   <.002    <.001    <.017    <.002
         FEB
           08...      <.002    <.003    <.003    <.004     .0061   <.002    E.0037   <.002    <.001    <.017    <.002
         MAR
           22...      <.002    <.003    <.003    <.004    <.004    <.002    <.002    <.002    <.001    <.017    <.002
         MAY
           15...      <.002    <.003    <.003    <.004    <.004    <.002    <.002    <.002    <.001    <.017    <.002
         JUN
           06...        --       --       --       --       --       --       --       --       --       --       --
           29...      <.002    <.003    <.003    <.004    <.004    <.002    E.0018   <.002    <.001    <.017    <.002
         JUL
           17...        --       --       --       --       --       --       --       --       --       --       --
         AUG
           16...      <.002    <.003    <.003    <.004     .0048   E.0022   E.0010   <.002    <.001    <.017    <.002
         SEP
           13...        --       --       --       --       --       --       --       --       --       --       --


                      ETHAL-   ETHO-                       LIN-            METHYL   METHYL                       MOL-
                      FLUR-    PROP                       URON              AZIN-    PARA-             METRI-   INATE
                      ALIN     WATER   FONOFOS            WATER    MALA-    PHOS     THION    METO-    BUZIN    WATER
                     WAT FLT   FLTRD    WATER   LINDANE   FLTRD    THION,  WAT FLT  WAT FLT  LACHLOR  SENCOR    FLTRD
                      0.7 U    0.7 U    DISS     DIS-     0.7 U     DIS-    0.7 U    0.7 U    WATER    WATER    0.7 U
             DATE    GF, REC  GF, REC    REC    SOLVED   GF, REC   SOLVED  GF, REC  GF, REC  DISSOLV  DISSOLV  GF, REC
                     (UG/L)   (UG/L)   (UG/L)    (UG/L)  (UG/L)    (UG/L)  (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                     (82663)  (82672)  (04095)  (39341)  (82666)  (39532)  (82686)  (82667)  (39415)  (82630)  (82671)

         OCT
           27...        --       --       --       --       --       --       --       --       --       --       --
         NOV
           09...      <.004    <.003    <.003    <.004    <.002    <.005    <.001    <.006  <.005      <.004    <.004
         FEB
           08...      <.004    <.003    <.003    <.004    <.002    <.005    <.001    <.006   .0044     <.004    <.004
         MAR
           22...      <.004    <.003    <.003    <.004    <.002    <.005    <.001    <.006  <.002      <.004    <.004
         MAY
           15...      <.004    <.003    <.003    <.004    <.002    <.005    <.001    <.006  <.002      <.004    <.004
         JUN
           06...        --       --       --       --       --       --       --       --       --       --       --
           29...      <.004    <.003    <.003    <.004    <.002    <.005    <.001    <.006  E.00057    <.004    <.004
         JUL
           17...        --       --       --       --       --       --       --       --       --       --       --
         AUG
           16...      <.004    <.003    <.003    <.004    <.002    <.005    <.001    <.006  E.0027     <.004    <.004
         SEP
           13...        --       --       --       --       --       --       --       --       --       --       --


                     NAPROP-                      PEB-    PENDI-    PER-                      PRON-              PRO-
                      AMIDE                      ULATE    METH-   METHRIN  PHORATE   PRO-     AMIDE    PROPA-   PANIL
                      WATER             PARA-    WATER    ALIN      CIS     WATER    METON,   WATER    CHLOR,   WATER
                      FLTRD    P,P'     THION,   FILTRD  WAT FLT  WAT FLT   FLTRD    WATER,   FLTRD    WATER,   FLTRD
                      0.7 U     DDE      DIS-    0.7 U    0.7 U    0.7 U    0.7 U    DISS,    0.7 U    DISS,    0.7 U
             DATE    GF, REC  DISSOLV   SOLVED  GF, REC  GF, REC  GF, REC  GF, REC   REC     GF, REC   REC     GF, REC
                     (UG/L)   (UG/L)    (UG/L)  (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                     (82684)  (34653)  (39542)  (82669)  (82683)  (82687)  (82664)  (04037)  (82676)  (04024)  (82679)

         OCT
           27...        --       --       --       --       --       --       --       --       --       --       --
         NOV
           09...      <.003    <.006    <.004    <.004    <.004    <.005    <.002    E.0059   <.003    <.007    <.004
         FEB
           08...      <.003    <.006    <.004    <.004    <.004    <.005    <.002    <.018    <.003    <.007    <.004
         MAR
           22...      <.003    <.006    <.004    <.004    <.004    <.005    <.002    E.0021   <.003    <.007    <.004
         MAY
           15...      <.003    <.006    <.004    <.004    <.004    <.005    <.002    E.0073   <.003    <.007    <.004
         JUN
           06...        --       --       --       --       --       --       --       --       --       --       --
           29...      <.003    <.006    <.004    <.004    <.004    <.005    <.002    <.018    <.003    <.007    <.004
         JUL
           17...        --       --       --       --       --       --       --       --       --       --       --
         AUG
           16...      <.003    E.0016   <.004    <.004    <.004    <.005    <.002    E.0039   <.003    <.007    <.004
         SEP
           13...        --       --       --       --       --       --       --       --       --       --       --


                       PRO-             TEBU-     TER-     TER-    THIO-    TRIAL-    TRI-             SEDI-     SED.
                     PARGITE   SI-     THIURON   BACIL    BUFOS   BENCARB   LATE     FLUR-             MENT,     SUSP.
                      WATER   MAZINE,   WATER    WATER    WATER    WATER    WATER    ALIN     SEDI-     DIS-    SIEVE
                      FLTRD    WATER,   FLTRD    FLTRD    FLTRD    FLTRD    FLTRD   WAT FLT   MENT,   CHARGE,    DIAM.
                      0.7 U    DISS,    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    SUS-      SUS-   % FINER
             DATE    GF, REC   REC     GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC   PENDED   PENDED    THAN
                     (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)    (MG/L)  (T/DAY)  .062 MM
                     (82685)  (04035)  (82670)  (82665)  (82675)  (82681)  (82678)  (82661)  (80154)  (80155)  (70331)

         OCT
           27...        --       --       --       --       --       --       --       --      7        359      99
         NOV
           09...      <.013    <.005    E.0020   <.007    <.013    <.002    E.0024   <.002     3        167      91
         FEB
           08...      <.013    <.005    E.0022   <.007    <.013    <.002    <.002    <.002     1         80      92
         MAR
          22...      <.013    <.005    <.010    <.007    <.013    <.002    E.0018   <.002     1         49      67
         MAY
           15...      <.013    <.005    <.010    <.007    <.013    <.002    <.001    <.002     1         79      98
         JUN
           06...        --       --       --       --       --       --       --       --      2        159      70
           29...      <.013    <.005    <.010    <.007    <.013    <.002    E.0019   <.002     3        215      97
         JUL
           17...        --       --       --       --       --       --       --       --      5        315      65
         AUG
           16...      <.013    <.005    <.010    <.007    <.013    <.002    E.0022    .0043    2        137      97
         SEP
           13...        --       --       --       --       --       --       --       --       --       --       --


                                                SAMPLE    DEPTH              PH
                                                 LOC-    BOTTOM    SPE-     WATER
                                                 ATION,    AT      CIFIC    WHOLE
                                                 CROSS   SAMPLE    CON-     FIELD   TEMPER-  OXYGEN,
                                                SECTION   LOC-     DUCT-   (STAND-   ATURE     DIS-
                               DATE      TIME   (FT FM   ATION,    ANCE      ARD     WATER    SOLVED
                                                L BANK)  (FEET)   (US/CM)   UNITS)  (DEG C)   (MG/L)
                                                (00009)  (81903)  (00095)  (00400)  (00010)  (00300)

                           OCT
                             27...       1156     150      .00      650      7.8     11.3     11.7
                             27...       1157     450      .00      650      8.1     11.3     11.5
                             27...       1158     750      .00      650      8.2     11.3     11.4
                           NOV
                             09...       1041     150      .00      652      8.2      9.4     11.2
                             09...       1042     450      .00      651      8.3      9.4     10.9
                             09...       1043     750      .00      651      8.3      9.4     10.8
                           FEB
                             08...       1111     150      .10      655      8.0      1.2     14.2
                             08...       1112     450      .10      654      8.0      1.2     13.9
                             08...       1113     750      .10      650      8.1      1.3     13.8
                           MAR
                             22...       1111     150      .00      635      8.8      2.2     13.7
                             22...       1112     450      .00      636      8.6      2.2     14.0
                             22...       1113     750      .00      636      8.6      2.3     13.8
                           MAY
                             15...       1011     150      .10      630       --      7.0     12.9
                             15...       1012     450      .10      630       --      7.1     13.1
                             15...       1013     750      .10      631       --      7.0     13.2
                           JUN
                             06...       1035     150      .00      619      7.5      8.1     12.7
                             06...       1036     450      .00      620      7.7      8.0     12.4
                             06...       1037     750      .00      617      7.9      7.9     12.4
                             29...       1041     150      .10      627      8.1     13.2     10.4
                             29...       1042     450      .10      622      8.0     13.0     10.5
                             29...       1043     750      .10      628      7.9     13.0     10.6
                           AUG
                             16...       1026     150      .10      617      7.7     14.0      7.2
                             16...       1027     450      .10      618      7.7     14.0      7.1
                             16...       1028     750      .10      617      7.8     13.4      7.3
                           SEP
                             13...       1046     150      .00      625      8.1     16.1      8.8
                             13...       1047     450      .00      624      8.1     16.1      8.9
                             13...       1048     750      .00      623      8.1     16.1      8.8

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