LITTLE MISSOURI RIVER BASIN

                                     06337000  LITTLE MISSOURI RIVER NEAR WATFORD CITY, ND

LOCATION.--Lat 4735'45", long 10315'45", in SE1/4SE1/4NW1/4 sec.35, T.148 N., R.99 W., McKenzie County, Hydrologic Unit
   10110205, 0.8 mi upstream from U.S. Highway 85 crossing, 17 mi upstream from Cherry Creek, and 17.5 mi south of Watford City.

DRAINAGE AREA.--8,310 mi2, approximately.

                                                    WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1934 to current year.

REVISED RECORDS (WATER YEARS).--WSP 926: 1935. WSP 1270: 1943.

GAGE.--Water-stage recorder. Datum of gage is 1,929.03 ft above sea level. From Oct. 2, 1959, to June 17, 1963, and Nov. 28,
   1964, to Sept. 30, 1990, water-stage recorder at site at U.S. Highway 85 crossing, 0.8 mi downstream. From June 18, 1963, to
   Nov. 28, 1964, at site 0.6 mi downstream at present datum. See WSP 1729 or 1917 for history of changes prior to Oct. 2, 1959.

REMARKS.--Records fair except for period of estimated discharge, which are poor.

                          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        58       51       48      e26    e13        638      128       72      243       55     33       11
          2        57       49      e45      e26    e14        635      129       72      178       57     32        9.7
          3        57       49      e47      e27    e14        497      129       68      156       52     29        8.3
          4        56       51      e45      e27    e14        427      127       66      192      193     26        7.7
          5        56       53      e44      e26    e13        443      122       65      159      192     22        6.5

          6        56       52      e45      e25    e13        606      114       65      116      242     22        5.6
          7        57       53      e46      e26    e12        584      114       65       95      367     16        5.5
          8        55       51      e47      e25    e12        490      110       68       82      278     16        4.8
          9        54       50      e47      e25    e12        422      107       70       74      237     20        4.1
         10        54       51      e46      e25    e11        364      109       94       75      237     20        4.0

         11        54       51      e45      e26    e10        324      103      115       99      200     43        3.6
         12        56       50      e44      e25    e10        286      103      112      115      401    114        3.5
         13        61       50      e43      e24     e9.0      257      103      116      798      286     34        3.5
         14        62       52      e40      e24    e10        242      109      128      589      195     11        3.3
         15        59       53      e39      e23     e9.0      228      112      125      389      153      7.8      3.4

         16        56       52      e37      e21    e10        233      127      120      282      171     13        3.2
         17        56       50      e35      e19    e10        226      153      104      225      228      6.5      3.0
         18        57       51      e32      e17     e9.0      205      159       88      195      173      5.9      2.9
         19        57       52      e31      e16    e10        189      159       78      162      175      5.5      2.6
         20        57       52      e31      e14    e11        189      138       80      162      190      5.4      3.3

         21        55       51      e30      e14    e12        184      107       71      176      156      5.4      3.9
         22        55       53      e31      e14    e13        175       92       68      153      128      5.2      4.8
         23        55       49      e30      e14    e30        170       83       63      132      106      5.0      5.6
         24        55       49      e29      e15    e80        163       83       57      154      114      4.6      4.6
         25        56       47      e28      e14   e720        155       76       56      110      105      4.4      4.2

         26        57       48      e28      e14   1310        152       75       91       97       80      4.6      3.9
         27        56       49      e27      e15   1030        147       86      193       88       68      4.0      3.7
         28        57       50      e27      e15    746        144       90      167       79       49      3.6      3.4
         29        57       52      e26      e14    637        138       87      312       71       44     43        3.2
         30        57       49      e26      e13      ---      134       80      240       65       38     28        3.0
         31        55      ---      e26      e13      ---      132      ---      160      ---       31     15        ---

        TOTAL    1750     1520     1145      622   4804.0     9179     3314     3249     5511     5001    604.9    139.8
        MEAN     56.5     50.7     36.9     20.1      166      296      110      105      184      161     19.5     4.66
        MAX        62       53       48       27     1310      638      159      312      798      401      114       11
        MIN        54       47       26       13      9.0      132       75       56       65       31      3.6      2.6
        AC-FT    3470     3010     2270     1230     9530    18210     6570     6440    10930     9920     1200      277

        STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1935 - 2000, BY WATER YEAR (WY)

        MEAN      167     57.8     17.6     11.5      270     1849     1461      763     1071      517      221      167
        MAX      2364      409      138      121     3023    10220    12170     4302     5646     2759     1405     1174
        (WY)     1972     1947     1947     1983     1943     1972     1952     1975     1944     1993     1937     1941
        MIN       .83      .33     .000     .000     .000     22.2     29.5     18.0     14.8     9.26     .023     1.38
        (WY)     1989     1989     1989     1935     1935     1964     1981     1981     1988     1980     1988     1936

        SUMMARY STATISTICS           FOR 1999 CALENDAR YEAR        FOR 2000 WATER YEAR           WATER YEARS 1935 - 2000

        ANNUAL TOTAL                      199695.3                    36839.7
        ANNUAL MEAN                          547                        101                        548
        HIGHEST ANNUAL MEAN                                                                       1637              1971
        LOWEST ANNUAL MEAN                                                                          38.0            1988
        HIGHEST DAILY MEAN                  4830     Mar 16            1310     Feb 26           55000       Mar 25 1947
        LOWEST DAILY MEAN                      9.5   Jan 24               2.6   Sep 19                .00    Jan  1 1935
        ANNUAL SEVEN-DAY MINIMUM               9.9   Jan 20               3.1   Sep 14                .00    Jan  1 1935
        INSTANTANEOUS PEAK FLOW                                        1400     Feb 26          110000       Mar 25 1947
        INSTANTANEOUS PEAK STAGE                                          4.46  Feb 26              24.00    Mar 25 1947
        ANNUAL RUNOFF (AC-FT)             396100                      73070                     397100
        10 PERCENT EXCEEDS                  1810                        227                       1190
        50 PERCENT EXCEEDS                   118                         54                         74
        90 PERCENT EXCEEDS                    14                          6.3                         .50
        
        e  Estimated
        
        
                                                     WATER-QUALITY RECORDS

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

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

                                DIS-     PH       PH       SPE-
                              CHARGE,   WATER    WATER    CIFIC    SPE-                       HARD-             MAGNE-
                               INST.    WHOLE    WHOLE     CON-    CIFIC                      NESS    CALCIUM    SIUM,
                               CUBIC    FIELD     LAB     DUCT-    CON-    TEMPER-  TEMPER-   TOTAL    DIS-      DIS-
                                FEET   (STAND-  (STAND-   ANCE     DUCT-    ATURE    ATURE    (MG/L    SOLVED   SOLVED
             DATE      TIME     PER      ARD      ARD      LAB     ANCE      AIR     WATER     AS      (MG/L    (MG/L
                               SECOND   UNITS)   UNITS)  (US/CM)  (US/CM)  (DEG C)  (DEG C)   CACO3)   AS CA)   AS MG)
                              (00061)  (00400)  (00403)  (90095)  (00095)  (00020)  (00010)  (00900)  (00915)  (00925)

         OCT
           25...       1430     56        --       --       --     2400      14.0     8.0       --       --       --
         DEC
           12...       1325     47        --       --       --     2450       1.0      .5       --       --       --
         JAN
           20...       1310     15        --       --       --     3600     -13.0      .0       --       --       --
         MAR
           20...       1615    187        --       --       --     2000       7.0     5.5       --       --       --
         JUN
           06...       1030    117       8.6       --     2230     2180      18.0    13.0      270     56.0     31.0
         AUG
           08...       1130     18       8.5      8.5     2550     2550      35.0    25.0      350     69.0     44.0
         SEP
           26...       1230      3.6      --       --       --     2570       9.0    10.0       --       --       --


                                                                ANC                                        SOLIDS,
                           POTAS-   SODIUM                    UNFLTRD   CHLO-    FLUO-            SOLIDS,  RESIDUE
                            SIUM,     AD-   SODIUM,           TIT 4.5   RIDE,    RIDE,   SULFATE    DIS-   AT 180
                            DIS-    SORP-    DIS-               LAB     DIS-      DIS-    DIS-     SOLVED   DEG. C
                           SOLVED    TION   SOLVED             (MG/L    SOLVED   SOLVED   SOLVED   (TONS     DIS-
                  DATE     (MG/L    RATIO    (MG/L    SODIUM    AS      (MG/L    (MG/L    (MG/L     PER     SOLVED
                           AS K)             AS NA)  PERCENT   CACO3)   AS CL)   AS F)   AS SO4)    DAY)    (MG/L)
                          (00935)  (00931)  (00930)  (00932)  (90410)  (00940)  (00950)  (00945)  (70302)  (70300)

              OCT
                25...        --       --       --       --       --       --       --       --       --       --
              DEC
                12...        --       --       --       --       --       --       --       --       --       --
              JAN
                20...        --       --       --       --       --       --       --       --       --       --
              MAR
                20...        --       --       --       --       --       --       --       --       --       --
              JUN
                06...      10.0      11       430      77       338     12.0       .4      820     505      1600
              AUG
                08...      18.0      11       490      74       440     16.0       .4      860      88.4    1850
              SEP
                26...        --       --       --       --       --       --       --       --       --       --


                          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)

              OCT
                25...        --       --       --       --       --       --       --       --       --       --
              DEC
                12...        --       --       --       --       --       --       --       --       --       --
              JAN
                20...        --       --       --       --       --       --       --       --       --       --
              MAR
                20...        --       --       --       --       --       --       --       --       --       --
              JUN
                06...      1560     <1.0      10        1       70.0     <10       .1       4      <1.0      640
              AUG
                08...      1760      2.0      50        1      100        10      <.1       8       1.0      840
              SEP
                26...        --       --       --       --       --       --       --       --       --       --

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