KNIFE RIVER BASIN

                                               06340500  KNIFE RIVER AT HAZEN, ND

LOCATION.--Lat 4717'07", long 10137'18", in SW1/4SE1/4SE1/4 sec.18, T.144 N., R.86 W., Mercer County, Hydrologic Unit
   10130201, on left bank at downstream side of highway bridge, 0.5 mi south of Hazen, and 3 mi upstream from Antelope Creek.

DRAINAGE AREA.--2,240 mi2, approximately.

                                                    WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October to November 1928, March 1929 to September 1933, August 1937 to current year. Monthly discharge only
   for some periods, published in WSP 1309.

REVISED RECORDS.--WSP 1146: 1943. WSP 1279: 1930-31, 1932-33(M). WSP 1917: Drainage area.

GAGE.--Water-stage recorder. Datum of gage is 1,712.35 ft above sea level. Prior to Sept. 25, 1947, nonrecording gages at same
   site and datum.

REMARKS.--Records good except for period of estimated discharge, which are poor. Slight regulation by Lake Ilo 81 mi upstream,
   capacity, 7,130 acre-ft.

EXTREMES OUTSIDE PERIOD OF RECORD.--According to local residents, the floods of 1943 and 1950 were not exceeded during the
   period 1884 to 1942.

                          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        39       39      e40      e37      e33     e600       72       78       41       32       23       17
          2        38       39      e38      e36      e32     e550       71       70       42       31       23       18
          3        38       39      e38      e36      e31     e500       71       64       40       32       25       18
          4        39       39      e38      e37      e32      374       71       59       40       37       25       20
          5        41       41      e40      e37      e31      333       69       55       38       42       27       20

          6        42       47      e42      e38      e30      302       68       57       37       49       26       21
          7        41       47      e42      e38      e31      263       68       62       37       52       26       23
          8        42       47      e43      e39      e30      218       67       75       35       55       25       22
          9        43       46      e43      e38      e29      158       65       87       32       46       25       20
         10        42       45      e44      e38      e30      133       64       84       31       47       23       20

         11        43       45      e43      e39      e29      134       63       91       30       60       22       19
         12        44       45      e42      e38      e28      135       61      109       31       83       21       19
         13        46       42      e43      e37      e29      114       61      116       34      132       21       18
         14        47       42      e43      e36      e28      113       69      105       62      107       20       18
         15        46       42      e42      e37      e27       97       71      101      133       88       20       18

         16        45       43      e41      e36      e28       96       72      102      176       87       19       18
         17        45       42      e41      e37      e27      103       76       91      150       66       19       18
         18        45       43      e40      e37      e26       98       83       81      118       53       19       17
         19        45       44      e40      e36      e27       93       95       72       97       47       19       17
         20        46       44      e39      e35      e28       91       98       66       87       46       19       18

         21        46       44      e38      e36      e30       91      100       62       83       45       19       19
         22        44       46      e37      e36      e33       90       95       58       72       51       19       22
         23        44       45      e36      e35      e60       90       87       54       66       63       19       23
         24        43      e45      e37      e35     e250       93       83       49       59       59       19       25
         25        43      e45      e38      e34     e900       95       91       47       53       49       18       25

         26        43      e45      e38      e35    e1100       90      108       54       47       41       18       24
         27        43      e45      e39      e34     e750       87      128       55       43       36       18       25
         28        43      e45      e38      e35     e700       83      117       50       39       32       18       24
         29        42      e45      e37      e34     e900       80       99       49       35       29       17       22
         30        42      e45      e36      e33      ---       76       88       45       33       27       17       22
         31        41      ---      e36      e34      ---       73      ---       39      ---       25       17      ---

        TOTAL    1331     1311     1232     1123     5309     5453     2431     2187     1821     1649      646      610
        MEAN     42.9     43.7     39.7     36.2      183      176     81.0     70.5     60.7     53.2     20.8     20.3
        MAX        47       47       44       39     1100      600      128      116      176      132       27       25
        MIN        38       39       36       33       26       73       61       39       30       25       17       17

        STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1929 - 2000, BY WATER YEAR (WY)

        MEAN     39.1     31.5     22.3     20.1     98.4      698      514      165      222      118     48.6     34.4
        MAX       365      223     83.1      145      927     3228     4293     1530     1041      979      215      143
        (WY)     1983     1983     1983     1974     1930     1943     1952     1970     1944     1938     1954     1978
        MIN      6.39     7.71     3.79      .70     .000     11.6     26.3     17.0     8.70     10.5     2.00      .50
        (WY)     1962     1962     1962     1962     1962     1965     1981     1931     1961     1961     1933     1933

        SUMMARY STATISTICS           FOR 1999 CALENDAR YEAR        FOR 2000 WATER YEAR           WATER YEARS 1929 - 2000

        ANNUAL TOTAL                       73959                      25103
        ANNUAL MEAN                          203                         68.6                      169
        HIGHEST ANNUAL MEAN                                                                        441              1943
        LOWEST ANNUAL MEAN                                                                          21.7            1991
        HIGHEST DAILY MEAN                  4430     Mar 18            1100     Feb 26           22400       Mar 27 1943
        LOWEST DAILY MEAN                     20     Jan 24              17     Aug 29                .00    Jan 21 1933
        ANNUAL SEVEN-DAY MINIMUM              20     Jan 22              17     Aug 26                .00    Jan 21 1933
        INSTANTANEOUS PEAK FLOW                                        1150     Feb 26           35300       Jun 24 1966
        INSTANTANEOUS PEAK STAGE                                        a 8.60  Feb 29              27.01    Jun 24 1966
        10 PERCENT EXCEEDS                   457                         99                        250
        50 PERCENT EXCEEDS                    47                         42                         32
        90 PERCENT EXCEEDS                    23                         21                         10

        a  Backwater from ice
        e  Estimated

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