RED RIVER OF THE NORTH BASIN

                                          05056270  BIG COULEE BELOW CHURCHS FERRY, ND

LOCATION.--Lat 48o15'33", long 99o12'00", in NE1/4SE1/4 sec.12, T. 155 N., R.67 W., Benson County, Hydrologic Unit 09020201, on
   downstream side of bridge 1 mi south of Churchs Ferry.

DRAINAGE AREA.--1,260 mi2, approximately, of which about 140 mi2 is probably noncontributing, drainage area reduced from
   approximately 2,510 mi2 with the completion of Channel A in March 1979.

                                                    WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--March 1998 to current year.

GAGE.--Nonrecording gage. Elevation of gage is 1,450 ft above sea level, from State Department of Transportation.

REMARKS.--Records poor. Gage in backwater due to rising lake level of Devils Lake. Elevation at gage frequenty affected by wind.

EXTREMES FOR PERIOD OF RECORD.--Maximum daily discharge, 1,280 ft3/s, Apr. 20,1999, gage height 47.39 ft, backwater from Devils
   Lake; maximum gage height observed, 47.64 ft, May 21-22, 1999; backwater from Devils Lake; no flow for many days.

EXTREMES FOR CURRENT YEAR.--Maximum daily discharge, 1,280 ft3/s, Apr. 20, gage height 47.39 ft, backwater from Devils
   Lake; maximum gage height observed, 47.64 ft, May 21-22; backwater from Devils Lake; no flow for many days.


                           DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
                                                        DAILY MEAN VALUES

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

           1       ---      ---      ---      ---      ---     e.00      e10      820      678     e330      246      317
           2       ---      ---      ---      ---      ---     e.00      e15      733      665      328      252      317
           3       ---      ---      ---      ---      ---     e.00      e23      756      630      324      243     e312
           4       ---      ---      ---      ---      ---     e.00      e35      750      574      335      241     e306
           5       ---      ---      ---      ---      ---     e.00      e60      762      564     e320      240     e300

           6       ---      ---      ---      ---      ---     e.00      e96      779      559      306      246     e295
           7       ---      ---      ---      ---      ---     e.00      159      672      502      310      240      289
           8       ---      ---      ---      ---      ---     e.00      219      656      493      328      240      249
           9       ---      ---      ---      ---      ---     e.00      343      651      470      321      225      256
          10       ---      ---      ---      ---      ---     e.00      461      797      451      317      228      269

          11       ---      ---      ---      ---      ---     e.00      672      646      461      313     e250      272
          12       ---      ---      ---      ---      ---     e.00      808      711      453      313      272      265
          13       ---      ---      ---      ---      ---     e.00     1140      667      435      317      259      259
          14       ---      ---      ---      ---      ---     e.00     1180      744      398      306      269      256
          15       ---      ---      ---      ---      ---     e.00     1200      767      410      358      285      256

          16       ---      ---      ---      ---      ---     e.00     1210      838      394      289      282      256
          17       ---      ---      ---      ---      ---     e.00     1260      894      398      306      292      259
          18       ---      ---      ---      ---      ---     e.00     1260      945      390      310      299      265
          19       ---      ---      ---      ---      ---     e.00     1250      984      390      306      306      265
          20       ---      ---      ---      ---      ---     e.00     1280      971      386      306      310      265

          21       ---      ---      ---      ---      ---     e.00     1280     1010      382      303      313      262
          22       ---      ---      ---      ---      ---     e.00     1240      984      378      317      303      269
          23       ---      ---      ---      ---      ---     e.00     1190      958     e382      317      306      265
          24       ---      ---      ---      ---      ---     e.00     1140      939      386      324      306      265
          25       ---      ---      ---      ---      ---     e.00     1090      894      390      324      310      256

          26       ---      ---      ---      ---      ---     e.50     1040      838      339      310      306      259
          27       ---      ---      ---      ---      ---    e1.0       984      832      335      296      310      259
          28       ---      ---      ---      ---      ---    e1.5       945      767      332      289      317      249
          29       ---      ---      ---      ---      ---    e2.5       882      820      332      275      310      249
          30       ---      ---      ---      ---      ---    e4.2       869      808     e331      272      313      249
          31       ---      ---      ---      ---      ---    e6.2       ---     e740      ---      249      324      ---

         MEAN      ---      ---      ---      ---      ---      .51      778      811      443      310      279      270
         MAX       ---      ---      ---      ---      ---      6.2     1280     1010      678      358      324      317
         MIN       ---      ---      ---      ---      ---      .00       10      646      331      249      225      249

         e  Estimated

                                                     WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water years 1958, 1961 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-
                                INST.    PRES-    SOLVED            WHOLE    WHOLE     CON-    CIFIC
                                CUBIC     SURE    (PER-   OXYGEN,   FIELD     LAB     DUCT-    CON-    TEMPER-  TEMPER-
                                 FEET     (MM      CENT     DIS-   (STAND-  (STAND-   ANCE     DUCT-    ATURE    ATURE
              DATE      TIME     PER       OF     SATUR-   SOLVED    ARD      ARD      LAB     ANCE      AIR     WATER
                                SECOND    HG)     ATION)   (MG/L)   UNITS)   UNITS)  (US/CM)  (US/CM)  (DEG C)  (DEG C)
                               (00061)  (00025)  (00301)  (00300)  (00400)  (00403)  (90095)  (00095)  (00020)  (00010)

          APR
            06...       1240      96       --       --       --       --       --       --     1320      5.0      1.5
            13...       1425    1160      720       81     10.1      7.9      7.7      841      756     15.0      3.5
            23...       1305    1180      735      144     17.5      8.7       --      600      606     10.0      5.5
          MAY
            05...       1220     761      708       88      8.1      9.0       --      577      633     18.0     15.5
          JUN
            10...       1445     448      727       84      7.2      8.4      8.3      679      692     22.0     20.6
          AUG
            04...       1000     239      730        9      7.1      8.6       --      787      748     23.0     20.1


                                                                                       ANC
                       HARD-             MAGNE-   POTAS-   SODIUM                    UNFLTRD   CHLO-    FLUO-
                       NESS    CALCIUM    SIUM,    SIUM,     AD-            SODIUM,  TIT 4.5   RIDE,    RIDE,   SULFATE
                       TOTAL    DIS-      DIS-     DIS-    SORP-             DIS-      LAB     DIS-      DIS-    DIS-
                       (MG/L    SOLVED   SOLVED   SOLVED    TION            SOLVED    (MG/L    SOLVED   SOLVED   SOLVED
              DATE      AS      (MG/L    (MG/L    (MG/L    RATIO    SODIUM   (MG/L     AS      (MG/L    (MG/L    (MG/L
                       CACO3)   AS CA)   AS MG)   AS K)            PERCENT   AS NA)   CACO3)   AS CL)   AS F)   AS SO4)
                      (00900)  (00915)  (00925)  (00935)  (00931)  (00932)  (00930)  (90410)  (00940)  (00950)  (00945)

          APR
            06...        --       --       --       --       --       --       --       --       --       --       --
            13...       340      71       39       15       1        23       48       235      29        .10     210
            23...       250      52       28       12        .8      20       30       173      15        .10     130
          MAY
            05...       230      49       27       12        .9      21       30       167      17        .10     130
          JUN
            10...       290      60       33       13        .9      21       36       198      16        .20     160
          AUG
            04...       330      67       39       14       1        21       42       220      16        .20     180


                       NITRO-   NITRO-   NITRO-   NITRO-                     NITRO-   PHOS-                     SOLIDS,
                        GEN,   GEN,AM-    GEN,     GEN,    NITRO-             GEN,   PHORUS            SOLIDS,  RESIDUE
                      AMMONIA  MONIA +  NITRATE  NO2+NO3    GEN,    NITRO-  NITRITE   ORTHO,   PHOS-     DIS-   AT 180
                        DIS-   ORGANIC    DIS-     DIS-   ORGANIC    GEN,     DIS-    DIS-    PHORUS    SOLVED   DEG. C
                       SOLVED   TOTAL    SOLVED   SOLVED   TOTAL    TOTAL    SOLVED  SOLVED    TOTAL    (TONS     DIS-
              DATE     (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L    (MG/L   (MG/L     (MG/L     PER     SOLVED
                       AS N)    AS N)    AS N)    AS N)    AS N)    AS N)    AS N)   AS P)     AS P)     DAY)    (MG/L)
                      (00608)  (00625)  (00618)  (00631)  (00605)  (00600)  (00613)  (00671)  (00665)  (70302)  (70300)

          APR
            06...        --       --       --       --       --       --       --       --       --       --       --
            13...       .421     1.2      .763     .866      .80     2.1      .103     .458     .337    1830      584
            23...       .032     1.7      .454     .509     1.7      2.2      .055     .206     .380    1310      412
          MAY
            05...       .034     1.7       --      .060     1.7      1.8     <.010     .037     .215     785      382
          JUN
            10...       .091     1.3      .188     .225     1.3      1.6      .037     .160     .242     556      460
          AUG
            04...       .089     3.2       --     <.050     3.1       --     <.010     .238     .438     352      545


                           SOLIDS,
                           SUM OF                                        MANGA-            MOLYB-   SELE-    STRON-
                           CONSTI-  ARSENIC   IRON,    LEAD,   LITHIUM   NESE,   MERCURY   DENUM,   NIUM,     TIUM,
                           TUENTS,    DIS-     DIS-     DIS-     DIS-     DIS-     DIS-     DIS-     DIS-     DIS-
                             DIS-    SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED   SOLVED
                   DATE     SOLVED   (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L    (UG/L
                            (MG/L)   AS AS)   AS FE)   AS PB)   AS LI)   AS MN)   AS HG)   AS MO)   AS SE)   AS SR)
                           (70301)  (01000)  (01046)  (01049)  (01130)  (01056)  (71890)  (01060)  (01145)  (01080)

               APR
                 06...        --       --       --       --       --       --       --       --       --       --
                 13...       560       4       60      <1.0      40       530      <.1      1.0      <1       270
                 23...       374       3       40      <1.0      30       160      <.1     <1.0      <1       240
               MAY
                 05...       366       3       40      <1.0      30        50      <.1     <1.0      <1       240
               JUN
                 10...       439       5       20      <1.0      30       130      <.1     <1.0      <1       300
               AUG
                 04...       491       5       70       2.0      40        80      <.1      1.0      <1       300


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