RED RIVER OF THE NORTH BASIN

                                        05102490  RED RIVER OF THE NORTH AT PEMBINA, ND
                                          (National water-quality assessment program)

LOCATION.--Lat 48o58'17", long 97o14'16", in NE1/4 sec.4, T.163 N., R.51 W., Pembina County, Hydrologic Unit 09020311, at bridge
   crossing the Red River 0.1 mi north of Pembina.

DRAINAGE AREA.--Approximately 40,200 mi2, includes 3,800 mi2 in closed basins.

                                                     WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water year 1994 to current year.


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

                           DIS-    BARO-   OXYGEN,             PH       PH       SPE-
                         CHARGE,   METRIC    DIS-             WATER    WATER    CIFIC    SPE-                       HARD-
                          INST.    PRES-    SOLVED            WHOLE    WHOLE     CON-    CIFIC                      NESS
                          CUBIC     SURE    (PER-   OXYGEN,   FIELD     LAB     DUCT-    CON-    TEMPER-  TEMPER-   TOTAL
                           FEET     (MM      CENT     DIS-   (STAND-  (STAND-   ANCE     DUCT-    ATURE    ATURE    (MG/L
        DATE      TIME     PER       OF     SATUR-   SOLVED    ARD      ARD      LAB     ANCE      AIR     WATER     AS
                          SECOND    HG)     ATION)   (MG/L)   UNITS)   UNITS)  (US/CM)  (US/CM)  (DEG C)  (DEG C)   CACO3)
                         (00061)  (00025)  (00301)  (00300)  (00400)  (00403)  (90095)  (00095)  (00020)  (00010)  (00900)

       NOV
        02...     1055      --      733      89      10.1      8.5      8.2      779      794      6.0      8.0      320
        30...     0930      --      734      85      11.6      8.5      7.9      813      816      1.0      1.0      330
       APR
        05...     1200      --      744      87      12.0      8.1      7.8      351      350      4.0      1.0      140
        29...     0945      --      749      94      10.0      8.3      8.0      585      583     13.0     12.0      240
       JUN
        02...     1015      --      740      79       7.4      8.4      8.2      774      785     14.0     17.0      320
       JUL
        08...     1105      --      749      77       6.7      8.2      8.2      653      652     17.0     21.5      270
       AUG
        04...     1000      --      745      81       6.6      8.3      8.2      661      667     22.0     24.0      280
       SEP
        09...     1015    16400     735      77       7.3      8.1      7.9      483      486     10.5     16.0      220


                                                                        ANC     ALKA-   BICAR-    CAR-
                          MAGNE-   POTAS-   SODIUM                    UNFLTRD  LINITY   BONATE   BONATE    CHLO-    FLUO-
                CALCIUM    SIUM,    SIUM,     AD-            SODIUM,  TIT 4.5  WAT DIS   WATER    WATER    RIDE,    RIDE,
                 DIS-      DIS-     DIS-    SORP-             DIS-      LAB    TOT IT   DIS IT   DIS IT    DIS-      DIS-
                 SOLVED   SOLVED   SOLVED    TION            SOLVED    (MG/L    FIELD    FIELD    FIELD    SOLVED   SOLVED
        DATE     (MG/L    (MG/L    (MG/L    RATIO    SODIUM   (MG/L     AS     MG/L AS  MG/L AS  MG/L AS   (MG/L    (MG/L
                 AS CA)   AS MG)   AS K)            PERCENT   AS NA)   CACO3)   CACO3    HCO3      CO3     AS CL)   AS F)
                (00915)  (00925)  (00935)  (00931)  (00932)  (00930)  (90410)  (39086)  (00453)  (00452)  (00940)  (00950)

       NOV
        02...     69       35       9.0       .9      20       38       207      168      196       4      43        .21
        30...     71       37       7.3      1        23       47        --      223      265       4      47        .15
       APR
        05...     32       14       6.1       .5      16       13        --      100      122       0       9.8      .12
        29...     57       25       6.2       .6      16       23        --      156      190       0      17        .17
       JUN
        02...     73       35       7.4       .9      19       37        --      208      244       5      23        .22
       JUL
        08...     62       29       5.3       .7      18       28        --      199      243       0      21        .22
       AUG
        04...     62       31       6.6       .8      19       32        --      209      255       0      18        .19
       SEP
        09...     49       23       6.9       .4      11       13        --      146      178       0      10        .17


                                   NITRO-   NITRO-   NITRO-            NITRO-   NITRO-   NITRO-                     NITRO-
                SILICA,             GEN,   GEN,AM-  GEN,AM-   NITRO-    GEN,     GEN,     GEN,    NITRO-             GEN,
                 DIS-    SULFATE  AMMONIA  MONIA +  MONIA +    GEN    NITRATE  NO2+NO3  ORGANIC    GEN,    NITRO-  NITRITE
                 SOLVED   DIS-      DIS-   ORGANIC  ORGANIC   DIS-      DIS-     DIS-     DIS-   ORGANIC    GEN,     DIS-
                 (MG/L    SOLVED   SOLVED   DIS.     TOTAL   SOLVED    SOLVED   SOLVED   SOLVED   TOTAL    TOTAL    SOLVED
        DATE      AS      (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L
                 SIO2)   AS SO4)   AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)
                (00955)  (00945)  (00608)  (00623)  (00625)  (00602)  (00618)  (00631)  (00607)  (00605)  (00600)  (00613)

       NOV
        02...     15     140        .113     .94     1.2       2.1     1.17     1.19       .83     1.1      2.4      .024
        30...     15     120        .114     .76      .97      1.1       --      .338      .65      .86     1.3     <.010
       APR
        05...     11      47        .154     .79     1.8       2.1     1.28     1.36       .64     1.7      3.2      .072
        29...     12     100       <.020     .70     1.5       1.0      .288     .302      --       --      1.8      .014
       JUN
        02...     14     160        .046     .78     2.2       1.0      .258     .268      .73     2.2      2.5      .010
       JUL
        08...     15     110        .027     .79     1.5       1.2       --      .405      .76     1.5      1.9     <.010
       AUG
        04...     17       <.10    <.020     .72     1.2       1.1       --      .381      --       --      1.6     <.010
       SEP
        09...     16      81       <.020     .70     1.5       2.0     1.27     1.30       --       --      2.8      .032

                          PHOS-                     SOLIDS,  SOLIDS,                    2,6-DI-
                 PHOS-   PHORUS            SOLIDS,  RESIDUE  SUM OF             MANGA-   ETHYL    ACETO-   ALA-
                PHORUS    ORTHO,   PHOS-     DIS-   AT 180   CONSTI-   IRON,    NESE,   ANILINE   CHLOR,   CHLOR,   ALPHA
                  DIS-    DIS-    PHORUS    SOLVED   DEG. C  TUENTS,    DIS-     DIS-   WAT FLT   WATER    WATER,    BHC
                 SOLVED  SOLVED    TOTAL    (TONS     DIS-     DIS-    SOLVED   SOLVED   0.7 U    FLTRD    DISS,     DIS-
        DATE     (MG/L   (MG/L     (MG/L     PER     SOLVED   SOLVED   (UG/L    (UG/L   GF, REC    REC     REC,    SOLVED
                 AS P)   AS P)     AS P)     DAY)    (MG/L)   (MG/L)   AS FE)   AS MN)  (UG/L)    (UG/L)  (UG/L)   (UG/L)
                (00666)  (00671)  (00665)  (70302)  (70300)  (70301)  (01046)  (01056)  (82660)  (49260)  (46342)  (34253)

       NOV
        02...    .131     .118     .260       --      515      454     <10      E2.4    <.0030   <.0020    <.002   <.0020
        30...    .062     .060     .121       --      519      484     <10       4.8    <.0030   <.0020    <.002   <.0020
       APR
        05...    .213     .170     .547       --      225      200      E7.7     4.2    <.0030   <.0020    <.002   <.0020
        29...    .081     .060     .193       --      382      338     <10       3.0    <.0030   <.0020    <.002   <.0020
       JUN
        02...    .100     .097     .494       --      530      479     <10      28      <.0030    .0244    <.002   <.0020
       JUL
        08...    .123     .102     .413       --      446      387      E5.1    E2.3    <.0030    .0147    <.007   <.0020
       AUG
        04...    .118     .096     .330       --      429       --     <10      <3.0    <.0030   <.0020    <.002   <.0020
       SEP
        09...    .180     .141     .562     13900     313      293      E8.2    E1.7    <.0030   <.0020    <.002   <.0020


                           BEN-              CAR-    CARBO-                             DEETHYL                     DISUL-
                 ATRA-    FLUR-    BUTYL-   BARYL    FURAN             CYANA-   DCPA     ATRA-                      FOTON
                 ZINE,    ALIN     ATE,     WATER    WATER    CHLOR-   ZINE,    WATER    ZINE,     DI-      DI-     WATER
                 WATER,  WAT FLD   WATER,   FLTRD    FLTRD   PYRIFOS   WATER,   FLTRD    WATER,  AZINON,   ELDRIN   FLTRD
                 DISS,    0.7 U    DISS,    0.7 U    0.7 U     DIS-    DISS,    0.7 U    DISS,     DIS-     DIS-    0.7 U
        DATE     REC     GF, REC   REC     GF, REC  GF, REC   SOLVED   REC     GF, REC   REC      SOLVED   SOLVED  GF, REC
                (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)    (UG/L)  (UG/L)   (UG/L)   (UG/L)    (UG/L)   (UG/L)  (UG/L)
                (39632)  (82673)  (04028)  (82680)  (82674)  (38933)  (04041)  (82682)  (04040)  (39572)  (39381)  (82677)

       NOV
        02...    .026    <.0020   <.0020   <.0030   <.0030   <.0040    .0085   <.0020   E.0113    <.002    <.001   <.0170
        30...    .027    <.0020   <.0020   <.0030   <.0030   <.0040    .0099   <.0020   E.0119    <.002    <.001   <.0170
       APR
        05...    .019    <.0020   <.0020   <.0030   <.0030   <.0040   <.0040   <.0020   E.0063    <.002    <.001   <.0170
        29...    .013    <.0020   <.0020   <.0030   <.0030   <.0040   <.0040   <.0020   E.0046    <.002    <.001   <.0170
       JUN
        02...    .038    <.0020   <.0020   <.0030   <.0030   <.0040    .0070   <.0020   E.0062    <.002    <.001   <.0170
       JUL
        08...    .378    <.0020   <.0020   <.0030   <.0030   E.0034    .0101   <.0020   E.0506    <.002    <.001   <.0170
       AUG
        04...    .074    <.0020   <.0020   <.0030   <.0030   <.0040   <.0040   <.0020   E.0227    <.002    <.001   <.0170
       SEP
        09...    .038    <.0020   <.0020   <.0030   <.0030   <.0040    .0065   <.0020   E.0158    <.002    <.001   <.0170


                                ETHAL-   ETHO-                       LIN-            METHYL   METHYL
                       EPTC     FLUR-    PROP                       URON              AZIN-    PARA-             METRI-
                       WATER    ALIN     WATER   FONOFOS            WATER    MALA-    PHOS     THION    METO-    BUZIN
                       FLTRD   WAT FLT   FLTRD    WATER   LINDANE   FLTRD    THION,  WAT FLT  WAT FLT  LACHLOR  SENCOR
                       0.7 U    0.7 U    0.7 U    DISS     DIS-     0.7 U     DIS-    0.7 U    0.7 U    WATER    WATER
              DATE    GF, REC  GF, REC  GF, REC    REC    SOLVED   GF, REC   SOLVED  GF, REC  GF, REC  DISSOLV  DISSOLV
                      (UG/L)   (UG/L)   (UG/L)   (UG/L)    (UG/L)  (UG/L)    (UG/L)  (UG/L)   (UG/L)   (UG/L)   (UG/L)
                      (82668)  (82663)  (82672)  (04095)  (39341)  (82666)  (39532)  (82686)  (82667)  (39415)  (82630)

          NOV
            02...     <.0020   <.0040   <.0030   <.0030    <.004   <.0020    <.005   <.0010   <.0060     .011    <.004
            30...     <.0300   <.0040   <.0030   <.0030    <.004   <.0020    <.005   <.0010   <.0060    E.003    <.004
          APR
            05...      .0120   <.0040   <.0030   <.0030    <.004   <.0020    <.005   <.0010   <.0060     .010    <.004
            29...      .0164   <.0040   <.0030   <.0030    <.004   <.0020    <.005   <.0010   <.0060     .005    <.004
          JUN
            02...      .0148   <.0040   <.0030   <.0030    <.004   <.0020    <.005   <.0010   <.0060     .009    <.004
          JUL
            08...     <.0020   <.0040   <.0030   <.0030    <.004   <.0020    <.005   <.0010   <.0060     .012    <.004
          AUG
            04...     <.0020   <.0040   <.0030   <.0030    <.004   <.0020    <.005   <.0010   <.0060     .007    <.004
          SEP
            09...     <.0020   <.0040   <.0030   <.0030    <.004   <.0020    <.005   <.0010   <.0060     .005    <.004

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

                        MOL-   NAPROP-                      PEB-    PENDI-    PER-                      PRON-
                       INATE    AMIDE                      ULATE    METH-   METHRIN  PHORATE   PRO-     AMIDE    PROP-
                       WATER    WATER             PARA-    WATER    ALIN      CIS     WATER    METON,   WATER    CHLOR,
                       FLTRD    FLTRD    P,P'     THION,   FILTRD  WAT FLT  WAT FLT   FLTRD    WATER,   FLTRD    WATER,
                       0.7 U    0.7 U     DDE      DIS-    0.7 U    0.7 U    0.7 U    0.7 U    DISS,    0.7 U    DISS,
              DATE    GF, REC  GF, REC  DISSOLV   SOLVED  GF, REC  GF, REC  GF, REC  GF, REC   REC     GF, REC   REC
                      (UG/L)   (UG/L)   (UG/L)    (UG/L)  (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)
                      (82671)  (82684)  (34653)  (39542)  (82669)  (82683)  (82687)  (82664)  (04037)  (82676)  (04024)

          NOV
            02...     <.0040   <.0030   <.0060    <.004   <.0040   <.0040   <.0050   <.0020   <.0180   <.0030   <.0070
            30...     <.0040   <.0030   E.0018    <.004   <.0040   <.0040   <.0050   <.0020   <.0180   <.0030   <.0070
          APR
            05...     <.0040   <.0030   E.0027    <.004   <.0040   <.0060   <.0050   <.0020   <.0180   <.0030   <.0070
            29...     <.0040   <.0030   <.0060    <.004   <.0040   <.0040   <.0050   <.0020   <.0180   <.0030   <.0070
          JUN
            02...     <.0040   <.0030   <.0060    <.004   <.0040   <.0040   <.0050   <.0020   <.0180   <.0030   <.0070
          JUL
            08...     <.0040   <.0030   <.0060    <.004   <.0040   <.0040   <.0050   <.0020   E.0114   <.0030   <.0070
          AUG
            04...     <.0040   <.0030   <.0060    <.004   <.0040   <.0040   <.0050   <.0020   E.0055   <.0030   <.0070
          SEP
            09...     <.0040   <.0030   <.0060    <.004   <.0040   <.0040   <.0050   <.0020   E.0104   <.0030   <.0070


                        PRO-     PRO-             TEBU-     TER-     TER-    THIO-    TRIAL-    TRI-             SEDI-
                       PANIL   PARGITE   SI-     THIURON   BACIL    BUFOS   BENCARB   LATE     FLUR-             MENT,
                       WATER    WATER   MAZINE,   WATER    WATER    WATER    WATER    WATER    ALIN     SEDI-     DIS-
                       FLTRD    FLTRD    WATER,   FLTRD    FLTRD    FLTRD    FLTRD    FLTRD   WAT FLT   MENT,   CHARGE,
                       0.7 U    0.7 U    DISS,    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    SUS-      SUS-
              DATE    GF, REC  GF, REC   REC     GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC   PENDED   PENDED
                      (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)    (MG/L)  (T/DAY)
                      (82679)  (82685)  (04035)  (82670)  (82665)  (82675)  (82681)  (82678)  (82661)  (80154)  (80155)

          NOV
            02...     <.0040   <.0130   E.0024   <.0100   <.0070   <.0130   <.0020   <.0010   E.0032     162       --
            30...     <.0040   <.0130   <.0050   <.0100   <.0070   <.0130   <.0020   <.0010   <.0020      27       --
          APR
            05...     <.0040   <.0130   <.0050   <.0100   <.0070   <.0130   <.0020    .0132    .0093     328       --
            29...     <.0040   <.0130   E.0035   <.0100   <.0070   <.0130   <.0020   E.0039   E.0022      70       --
          JUN
            02...     <.0040   <.0130   <.0050   <.0100   <.0070   <.0130   <.0020   <.0010   E.0016     499       --
          JUL
            08...     <.0040   <.0130   E.0024   <.0100   <.0070   <.0130   <.0020   E.0010   <.0020     382       --
          AUG
            04...     <.0040   <.0200   <.0050   <.0100   <.0070   <.0130   <.0020   <.0010   <.0020     346       --
          SEP
            09...     <.0040   <.0130   E.0035   E.0026   <.0070   <.0130   <.0020   <.0010   E.0031     586     26000

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