KNIFE RIVER BASIN

                                              06339100  KNIFE RIVER AT MANNING, ND

LOCATION.--Lat 4714'10", long 10246'10", in SE1/4NW1/4 sec.6, T.143 N., R.95 W., Dunn County, Hydrologic Unit 10130201, on
   left bank 50 ft downstream from bridge on State Highway 22 and 0.4 mi north of Manning.

DRAINAGE AREA.--205 mi2, approximately.

                                                    WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--July 1967 to current year.

GAGE.--Water-stage recorder. Datum of gage is 2,156.55 ft above sea level.

REMARKS.--Records fair except for periods 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       .73     e1.7      2.2    e1.2      e1.0     19        2.3    e2.0      1.1       .84      .27      .10
          2       .83     e1.7      2.3    e1.2      e1.3     16        2.6    e1.6      1.1       .71      .31      .11
          3       .95      1.6      2.2    e1.1      e1.2     12        2.6    e1.4      1.2       .68      .38      .11
          4      1.5       1.6      2.3    e1.2      e1.3     10        2.8    e1.3      1.7       .65      .42      .11
          5      1.3       1.4      2.4    e1.2      e1.1      9.6      2.6    e1.3      2.8       .73      .61      .12

          6      1.2       1.5      2.3    e1.2      e1.0      9.3      3.1    e1.4      2.1       .69      .55      .13
          7      1.1      e1.8      2.3    e1.3      e1.1      8.4      3.2    e1.4      1.4       .70      .39      .15
          8      1.2       1.9      2.3    e1.2      e1.2      7.1      2.6    e1.6      1.2       .70      .31      .13
          9      1.2       1.9     e2.2    e1.1      e1.3      5.9      2.5    e1.6      1.2       .64      .29      .09
         10      1.1       1.8      2.0    e1.1      e1.2      5.4      2.5    e1.5       .98      .60      .28      .09

         11      1.2       1.9      2.0    e1.2      e1.1      4.7      2.8    e1.7       .76      .63      .24      .11
         12      1.4       1.9     e2.0    e1.0      e1.0      4.2      2.6    e2.0       .75      .66      .18      .13
         13      1.3       2.0     e2.0    e1.1      e1.0      3.7      2.1    e2.3      1.1       .60      .17      .12
         14      1.5       2.0     e1.9    e1.2      e1.1      3.6      2.8    e2.4      1.2       .48      .17      .12
         15      1.6       2.2     e1.7    e1.1      e1.2      3.3      2.9    e2.3      1.7       .43      .16      .11

         16      1.6       2.2     e1.5    e1.2      e1.1      3.0      3.1    e2.0      2.0       .36      .14      .10
         17      1.5       2.1     e1.4    e1.3      e1.1      3.0      3.4    e1.7      2.9       .36      .13      .11
         18      1.7       2.0     e1.3    e1.1      e1.2      3.2      4.5    e1.5      3.5       .36      .12      .10
         19      1.4       2.1     e1.3    e1.1      e1.1      3.4      5.3    e1.3      3.5       .36      .12      .08
         20      1.5       2.5     e1.2    e1.1      e1.2      3.7      5.8    e1.4      3.5       .34      .12      .08

         21      1.5       2.4     e1.2    e1.2      e1.7      3.5     11      e1.2      3.3       .32      .12      .08
         22      1.6       2.4     e1.1    e1.1       2.1      3.3      8.3    e1.2      3.8       .29      .11      .15
         23      1.6       2.4     e1.2    e1.0       4.9      3.3      5.9     1.1      3.7       .26      .10      .19
         24      1.5       2.3     e1.3    e1.1     101        3.1      4.8     1.0      3.1       .27      .10      .13
         25      1.5       2.3     e1.3     e.98    204        3.2      3.9      .93     2.4       .26      .11      .10

         26      1.5       2.2     e1.2     e.99     87        3.0      3.4      .99     2.0       .27      .10      .10
         27      1.5       2.1     e1.2    e1.1      45        2.9      3.2     1.1      1.6       .25      .11      .10
         28      1.5       2.1     e1.1    e1.1      35        2.3      2.8      .94     1.3       .23      .11      .12
         29     e1.8       2.0     e1.2    e1.0      27        2.4      2.3      .97     1.1       .22      .10      .12
         30     e1.9       2.1     e1.1    e1.1       ---      2.5      2.1     1.1      1.0       .20      .09      .16
         31     e1.8       ---     e1.1    e1.0       ---      2.5      ---     1.1       ---      .20      .09      ---

        TOTAL   43.51     60.1     51.8    34.87    530.5    170.5    109.8    45.33    58.99    14.29     6.50     3.45
        MEAN     1.40     2.00     1.67     1.12     18.3     5.50     3.66     1.46     1.97      .46      .21      .12
        MAX       1.9      2.5      2.4      1.3      204       19       11      2.4      3.8      .84      .61      .19
        MIN       .73      1.4      1.1      .98      1.0      2.3      2.1      .93      .75      .20      .09      .08
        AC-FT      86      119      103       69     1050      338      218       90      117       28       13      6.8

        STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2000, BY WATER YEAR (WY)

        MEAN     4.11     1.86     1.37     3.23     17.4     85.5     51.1     16.3     14.7     11.7     2.85     4.28
        MAX      54.1     8.43     3.39     30.5     89.5      399      485      104     91.5      100     32.6     68.5
        (WY)     1983     1999     1999     1974     1986     1972     1975     1970     1970     1997     1983     1978
        MIN      .000     .057     .066     .000      .36     1.37     1.32      .45     .077     .018     .000     .000
        (WY)     1991     1991     1991     1991     1994     1990     1990     1993     1992     1992     1988     1990

        SUMMARY STATISTICS           FOR 1999 CALENDAR YEAR        FOR 2000 WATER YEAR           WATER YEARS 1967 - 2000

        ANNUAL TOTAL                        8608.96                    1129.64
        ANNUAL MEAN                           23.6                        3.09                      17.9
        HIGHEST ANNUAL MEAN                                                                         48.1            1975
        LOWEST ANNUAL MEAN                                                                            .90           1990
        HIGHEST DAILY MEAN                  1000     Mar 16             204     Feb 25            3500       Mar 21 1997
        LOWEST DAILY MEAN                       .63  Sep 24                .08  Sep 19                .00    Sep 18 1972
        ANNUAL SEVEN-DAY MINIMUM                .72  Sep 24                .09  Sep 15                .00    Aug 17 1973
        INSTANTANEOUS PEAK FLOW                                         310     Feb 25          a 3600       Mar 21 1997
        INSTANTANEOUS PEAK STAGE                                          9.18  Feb 25            b 17.05    Mar 21 1997
        ANNUAL RUNOFF (AC-FT)              17080                       2240                      12960
        10 PERCENT EXCEEDS                    29                          3.4                       20
        50 PERCENT EXCEEDS                     2.2                        1.3                        1.5
        90 PERCENT EXCEEDS                      .99                        .13                        .12

        a  About
        b  Backwater from ice
        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
           29...       1000     1.8       --       --       --     2320       8.0     5.0       --       --       --
         DEC
           15...       1215     1.7       --       --       --     2720     -10.0      .0       --       --       --
         JAN
           20...       1040     1.2       --       --       --     2250     -20.0      .0       --       --       --
         FEB
           28...       1240    33         --       --       --      720      10.0      .5       --       --       --
         APR
           12...       1050     2.3      7.4       --     1910     1950       3.0     8.0      250     50.0     31.0
         JUN
           20...       1045     3.2       --       --       --     2490      20.0    22.0       --       --       --
         AUG
           09...       0840      .30     8.5      8.6     2650     2640      21.0    21.0      220     29.0     35.0
         SEP
           26...       0930      .10      --       --       --     2680       8.9     9.6       --       --       --


                                                                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
                29...        --       --       --       --       --       --       --       --       --       --
              DEC
                15...        --       --       --       --       --       --       --       --       --       --
              JAN
                20...        --       --       --       --       --       --       --       --       --       --
              FEB
                28...        --       --       --       --       --       --       --       --       --       --
              APR
                12...       9.3      10       360      75       482     16.0       .6      560      8.53    1350
              JUN
                20...        --       --       --       --       --       --       --       --       --       --
              AUG
                09...      12.0      17       580      84       680     16.0       .8      760      1.56    1920
              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
                29...        --       --       --       --       --       --       --       --       --       --
              DEC
                15...        --       --       --       --       --       --       --       --       --       --
              JAN
                20...        --       --       --       --       --       --       --       --       --       --
              FEB
                28...        --       --       --       --       --       --       --       --       --       --
              APR
                12...      1320     <1.0      160       1      30.0      60       <.1       1      <1.0      610
              JUN
                20...        --       --       --       --       --       --       --       --       --       --
              AUG
                09...      1840      4.0      190      <1      60.0      50       <.1       3      <1.0      570
              SEP
                26...        --       --       --       --       --       --       --       --       --       --

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