RED RIVER OF THE NORTH BASIN

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

LOCATION.--Lat 4858'17", long 9714'16", 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 1999 TO SEPTEMBER 2000

                         BARO-   OXYGEN,             PH       PH       SPE-
                         METRIC    DIS-             WATER    WATER    CIFIC    SPE-                       HARD-
                         PRES-    SOLVED            WHOLE    WHOLE     CON-    CIFIC                      NESS    CALCIUM
                          SURE    (PER-   OXYGEN,   FIELD     LAB     DUCT-    CON-    TEMPER-  TEMPER-   TOTAL    DIS-
                          (MM      CENT     DIS-   (STAND-  (STAND-   ANCE     DUCT-    ATURE    ATURE    (MG/L    SOLVED
       DATE      TIME      OF     SATUR-   SOLVED    ARD      ARD      LAB     ANCE      AIR     WATER     AS      (MG/L
                          HG)     ATION)   (MG/L)   UNITS)   UNITS)  (US/CM)  (US/CM)  (DEG C)  (DEG C)   CACO3)   AS CA)
                        (00025)  (00301)  (00300)  (00400)  (00403)  (90095)  (00095)  (00020)  (00010)  (00900)  (00915)

      OCT
       01...     1045     750       90      9.6      8.3      8.2      692      697      9.0     11.5      310     67.5
      NOV
       02...     1010     749       94     11.7      8.6       --      650      650      2.0      5.5      280     62.2
       23...     1030     757      103     13.9       --      8.4      588      607      2.0      2.5      260     58.2
      APR
       05...     1045     731      101     11.5      8.4      8.1      881      814     12.5      7.5      330     71.3
      MAY
       02...     1115     740      114     11.4      8.5      8.3      791      752     19.5     14.0      330     69.3
       31...     1015     740      110     10.2      8.7       --      799      794       --     17.5      340     70.7
      JUL
       05...     1005     740       94      8.0      7.6       --      550      553     18.0     21.5      220     49.5
       25...     1000     734       93      8.0      8.0      8.2      787      794     20.0     20.5      310     67.5
      AUG
       30...     1040      --       --       --      7.9      7.8      468      464     22.0     19.5      170     36.2


                                                                   ALKA-   BICAR-    CAR-
                      MAGNE-   POTAS-   SODIUM                    LINITY   BONATE   BONATE    CHLO-    FLUO-   SILICA,
                       SIUM,    SIUM,     AD-   SODIUM,           WAT DIS   WATER    WATER    RIDE,    RIDE,    DIS-
                       DIS-     DIS-    SORP-    DIS-             TOT IT   DIS IT   DIS IT    DIS-      DIS-    SOLVED
                      SOLVED   SOLVED    TION   SOLVED             FIELD    FIELD    FIELD    SOLVED   SOLVED   (MG/L
             DATE     (MG/L    (MG/L    RATIO    (MG/L    SODIUM  MG/L AS  MG/L AS  MG/L AS   (MG/L    (MG/L     AS
                      AS MG)   AS K)             AS NA)  PERCENT   CACO3    HCO3      CO3     AS CL)   AS F)    SIO2)
                     (00925)  (00935)  (00931)  (00930)  (00932)  (39086)  (00453)  (00452)  (00940)  (00950)  (00955)

         OCT
           01...      34.1      6.2       .7     26.8      16       220      268       0      20.2      .2      16.1
         NOV
           02...      31.2      5.8       .7     26.6      17       229      264       7      22.2      .2       8.7
           23...      28.0      4.4       .7     25.6      17       214      249       6      22.2      .2       6.1
         APR
           05...      36.3      9.1       .8     33.6      18       206      251       0      36.8      .2      12.7
         MAY
           02...      38.1      6.4       .9     36.7      19       230      274       7      29.5      .2       6.2
           31...      40.1      7.0       .9     38.9      19       251      306       0      25.6      .2       5.0
         JUL
           05...      22.4      8.5       .7     22.1      17       198      242       0      15.4      .2      18.2
           25...      34.6      8.3      1       38.5      21       199      243       0      25.0      .2      18.3
         AUG
           30...      19.0      6.8       .7     20.8      20       256      312       0      20.9      .2      11.8


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

         OCT
           01...      120       .73     1.0      <.020    <.010      --      .251      --       --      1.3       .98
         NOV
           02...       86.5     .71     1.2      <.020    <.010      --     <.050      --       --       --       --
           23...       72.8     .61      .96     <.020    <.010      --     <.050      --       --       --       --
         APR
           05...      163      1.2      1.8       .186     .052    2.85     2.90       .98     1.6      4.7      4.1
         MAY
           02...      137       .64      .98     <.020    <.010      --      .154      --       --      1.1       .79
           31...      152       .74     1.2      <.020    <.010      --     <.050      --       --       --       --
         JUL
           05...       87.4     .86      .84      .051     .034     .166     .200      .81      .79     1.0      1.1
           25...      139       .85     1.6      <.020    <.010      --      .643      --       --      2.2      1.5
         AUG
           30...       57.9     .63     3.3       .049     .025     .651     .676      .58     3.2      4.0      1.3


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

                               PHOS-            SOLIDS,  SOLIDS,                                               METHYL
                      PHOS-   PHORUS            RESIDUE  SUM OF             MANGA-   ACETO-   ALA-     ATRA-    AZIN-
                     PHORUS    ORTHO,   PHOS-   AT 180   CONSTI-   IRON,    NESE,    CHLOR,   CHLOR,   ZINE,    PHOS
                       DIS-    DIS-    PHORUS    DEG. C  TUENTS,    DIS-     DIS-    WATER    WATER,   WATER,  WAT FLT
                      SOLVED  SOLVED    TOTAL     DIS-     DIS-    SOLVED   SOLVED   FLTRD    DISS,    DISS,    0.7 U
             DATE     (MG/L   (MG/L     (MG/L    SOLVED   SOLVED   (UG/L    (UG/L     REC     REC,     REC     GF, REC
                      AS P)   AS P)     AS P)    (MG/L)   (MG/L)   AS FE)   AS MN)   (UG/L)  (UG/L)   (UG/L)   (UG/L)
                     (00666)  (00671)  (00665)  (70300)  (70301)  (01046)  (01056)  (49260)  (46342)  (39632)  (82686)

         OCT
           01...      .102      .085     .212     459      424      <10      <2      <.002    <.002    .036     <.001
         NOV
           02...      .020     <.010     .271     411      380      E10       4      <.002    <.002    .028     <.001
           23...      .008     <.010     .089     378      346      <10       3      <.002    <.002    .030     <.001
         APR
           05...      .153      .108     .430     536      500      <10      E2       .012    <.002    .035     <.001
         MAY
           02...      .033      .022     .197     495      465      <10       8      <.002    <.002    .023     <.001
           31...      .047      .033     .243     531      490      <10       3       .013    <.002    .078     <.001
         JUL
           05...      .199      .166     .193     367      344      E10       7       .039     .009    .484     <.001
           25...      .185      .153     .426     528      454      <10       5       .008    <.002    .142     <.001
         AUG
           30...      .159      .125    1.14      292      330      <10      E2      <.002    <.002    .024     <.001


                       BEN-              CAR-    CARBO-                                      DEETHYL
                      FLUR-    BUTYL-   BARYL    FURAN             CYANA-   DCPA              ATRA-
                      ALIN     ATE,     WATER    WATER    CHLOR-   ZINE,    WATER             ZINE,     DI-      DI-
                     WAT FLD   WATER,   FLTRD    FLTRD   PYRIFOS   WATER,   FLTRD    P,P'     WATER,  AZINON,   ELDRIN
                      0.7 U    DISS,    0.7 U    0.7 U     DIS-    DISS,    0.7 U     DDE     DISS,     DIS-     DIS-
             DATE    GF, REC   REC     GF, REC  GF, REC   SOLVED   REC     GF, REC  DISSOLV   REC      SOLVED   SOLVED
                     (UG/L)   (UG/L)   (UG/L)   (UG/L)    (UG/L)  (UG/L)   (UG/L)   (UG/L)   (UG/L)    (UG/L)   (UG/L)
                     (82673)  (04028)  (82680)  (82674)  (38933)  (04041)  (82682)  (34653)  (04040)  (39572)  (39381)

         OCT
           01...      <.002    <.002    <.003    <.003    <.004    <.004    <.002    <.006    E.016    <.002    <.001
         NOV
           02...      <.002    <.002    <.003    <.003     .007    <.004    <.002    <.006    E.013    <.002    <.001
           23...      <.002    <.002    <.003    <.003    <.004    <.004    <.002    <.006    E.012    <.002    <.001
         APR
           05...      <.002    <.002    <.003    <.003    <.004    <.004    <.002    <.006    E.022    <.002    <.001
         MAY
           02...      <.002    <.002    <.003    <.003    <.004    <.004    <.002    <.006    E.012    <.002    <.001
           31...      <.002    <.002    <.003    <.003    <.004    <.008    <.002    <.006    E.018    <.002    <.001
         JUL
           05...      <.002    <.002    <.003    <.003    <.004    <.010    <.002    <.006    E.056    <.002    <.001
           25...      <.002    <.002    <.003    <.003    <.004    <.004    <.002    <.006    E.035    <.002    <.001
         AUG
           30...      <.002    <.002    <.003    <.003    <.004    <.004    <.002    <.006    E.008    <.002    <.001


                     2,6-DI-   DISUL-            ETHAL-   ETHO-                                LIN-            METHYL
                      ETHYL    FOTON    EPTC     FLUR-    PROP                                URON              PARA-
                     ANILINE   WATER    WATER    ALIN     WATER   FONOFOS   ALPHA             WATER    MALA-    THION
                     WAT FLT   FLTRD    FLTRD   WAT FLT   FLTRD    WATER     BHC    LINDANE   FLTRD    THION,  WAT FLT
                      0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    DISS      DIS-    DIS-     0.7 U     DIS-    0.7 U
             DATE    GF, REC  GF, REC  GF, REC  GF, REC  GF, REC    REC    SOLVED   SOLVED   GF, REC   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)
                     (82660)  (82677)  (82668)  (82663)  (82672)  (04095)  (34253)  (39341)  (82666)  (39532)  (82667)

         OCT
          01...      <.003    <.017    <.002    <.004    <.003    <.003    <.002    <.004    <.002    <.005    <.006
         NOV
           02...      <.003    <.017    <.002    <.004    <.003    <.003    <.002    <.004    <.002    <.005    <.006
           23...      <.003    <.017    <.002    <.004    <.003    <.003    <.002    <.004    <.002    <.005    <.006
         APR
           05...      <.003    <.017     .005    <.004    <.003    <.003    <.002    <.004    <.002    <.005    <.006
         MAY
           02...      <.003    <.017     .014    <.004    <.003    <.003    <.002    <.004    <.002    <.005    <.006
           31...      <.003    <.017     .016    <.004    <.003    <.003    <.002    <.004    <.002    <.005    <.006
         JUL
           05...      <.003    <.017     .009    <.004    <.003    <.003    <.002    <.004    <.002    <.005    <.006
           25...      <.003    <.017    <.002    <.004    <.003    <.003    <.002    <.004    <.002    <.005    <.006
         AUG
           30...      <.003    <.017    <.002    <.004    <.003    <.003    <.002    <.004    <.002     .012    <.006


                                         MOL-   NAPROP-             PEB-    PENDI-    PER-                      PRON-
                               METRI-   INATE    AMIDE             ULATE    METH-   METHRIN  PHORATE   PRO-     AMIDE
                      METO-    BUZIN    WATER    WATER    PARA-    WATER    ALIN      CIS     WATER    METON,   WATER
                     LACHLOR  SENCOR    FLTRD    FLTRD    THION,   FILTRD  WAT FLT  WAT FLT   FLTRD    WATER,   FLTRD
                      WATER    WATER    0.7 U    0.7 U     DIS-    0.7 U    0.7 U    0.7 U    0.7 U    DISS,    0.7 U
             DATE    DISSOLV  DISSOLV  GF, REC  GF, REC   SOLVED  GF, REC  GF, REC  GF, 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)
                     (39415)  (82630)  (82671)  (82684)  (39542)  (82669)  (82683)  (82687)  (82664)  (04037)  (82676)

         OCT
           01...       .007    <.004    <.004    <.003    <.004    <.004    <.004    <.005    <.002    <.018    <.003
         NOV
           02...      <.002    <.004    <.004    <.003    <.004    <.004    <.004    <.005    <.002    E.006    <.003
           23...      <.002    <.004    <.004    <.003    <.004    <.004    <.004    <.005    <.002    <.018    <.003
         APR
           05...       .013    <.004    <.004    <.003    <.004    <.004    <.004    <.005    <.002    E.003    <.003
         MAY
           02...       .005    <.004    <.004    <.003    <.004    <.004    <.004    <.005    <.002    <.018    <.003
           31...       .008    <.004    <.004    <.003    <.004    <.004    <.004    <.005    <.002    E.006     .005
         JUL
           05...       .030     .009    <.004    <.003    <.004    <.004    <.004    <.005    <.002    E.003    <.003
           25...       .004    <.004    <.004    <.003    <.004    <.004    <.004    <.005    <.002    E.003    <.003
         AUG
           30...       .006    <.004    <.004    <.003    <.004    <.004    <.004    <.005    <.002    <.018    <.003


                                PRO-     PRO-             TEBU-     TER-     TER-    THIO-    TRIAL-    TRI-
                      PROPA-   PANIL   PARGITE   SI-     THIURON   BACIL    BUFOS   BENCARB   LATE     FLUR-
                      CHLOR,   WATER    WATER   MAZINE,   WATER    WATER    WATER    WATER    WATER    ALIN     SEDI-
                      WATER,   FLTRD    FLTRD    WATER,   FLTRD    FLTRD    FLTRD    FLTRD    FLTRD   WAT FLT   MENT,
                      DISS,    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-
             DATE     REC     GF, REC  GF, REC   REC     GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC   PENDED
                     (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)   (UG/L)    (MG/L)
                     (04024)  (82679)  (82685)  (04035)  (82670)  (82665)  (82675)  (82681)  (82678)  (82661)  (80154)

         OCT
           01...      <.007    <.004    <.013    <.005    <.010    <.007    <.013    <.002     .014    <.005     208
         NOV
           02...      <.007    <.004    <.013    <.005    <.010    <.007    <.013    <.002    E.003    <.002     284
           23...      <.007    <.004    <.013    <.005    <.010    <.007    <.013    <.002    <.001    <.002      24
         APR
           05...      <.007    <.004    <.013    <.005    <.010    <.007    <.013    <.002     .005    E.001     346
         MAY
           02...      <.007    <.004    <.013    <.005    <.010    <.007    <.013    <.002    <.001    <.005     206
           31...      <.007    <.004    <.013    <.005    <.010    <.007    <.013    <.002    <.001    <.002     188
         JUL
           05...      <.007    <.004    <.013    E.002    <.010    <.007    <.013    <.002    <.001    E.003      95
           25...      <.007    <.004    <.013    <.005    <.010    <.007    <.013    <.002    <.001    <.002     314
         AUG
           30...      <.007    <.004    <.013    <.005    <.010    <.007    <.013    <.002    <.001     .005    1240

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