05085000 FOREST RIVER AT MINTO, ND


List Of Figures:

Annual mean discharge
Annual flow duration


LOCATION.--Lat 4816'10'', long 9722'10", in SE1/4 sec.51, T.156 N., R.52 W., Walsh County, Hydrologic Unit 09020308, on right bank 30 ft upstream from dam in Minto, 150 ft upstream from Burlington Northern Railway bridge, and 900 ft east of U.S. Highway 81.
DRAINAGE AREA.--740 mi2, of which about 120 mi2 is probably noncontributing.
PERIOD OF RECORD.--April 1944 to current year.
GAGE.--Water-stage recorder. Datum of gage is 806.95 ft above sea level. Prior to July 15, 1954, nonrecording gage at site 400 ft upstream at same datum.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 16,600 ft3/s, Apr. 18, 1950; maximum gage height, 11.80 ft, Apr. 19, 1948, and Apr. 18, 1950; no flow at times.

Annual mean discharge

Annual mean discharge 05085000 FOREST RIVER AT MINTO, ND
----------------------------------------------------------------------------------------------------------
                              Statistics of monthly and annual mean discharges
                                    [m, more than 1 year of occurrence]
__________________________________________________________________________________________________________

                  Maximum                  Minimum                              Mean
           ______________________   ______________________   _____________________________________________

                       Water year                 Water year              Standard     Coeffi-    Percentage
 Month     Discharge       of         Discharge       of       Discharge  deviation    cient of   of annual
            (ft3/s)    occurrence      (ft3/s)    occurrence    (ft3/s)     (ft3/s)    variation   discharge
__________________________________________________________________________________________________________

October      59.1      1983            0         1991            9.36        8.97        0.96       1.53
November     23.6      1983            0.971     1991            9.00        5.06        0.56       1.47
December     13.4      1983            0.291     1990            5.07        3.53        0.70       0.83
January      9.66      1983            0         m               2.62        2.63        1.00       0.43
February     17.3      1981            0         m               2.14        3.19        1.49       0.35
March        438       1966            0         1962            65.7        97.5        1.48       10.7
April        1,570     1950            21.9      1953            309         348         1.13       50.5
May          1,520     1950            10.6      1946            103         221         2.15       16.8
June         267       1964            4.21      1991            47.0        57.7        1.23       7.68
July         348       1997            1.87      1980            34.2        58.5        1.71       5.59
August       328       1993            0         1946            16.3        46.0        2.82       2.66
September    69.0      1993            0         m               9.03        12.2        1.35       1.47
Annual       268       1950            4.36      1990            51.5        48.0        0.93       100

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Annual flow duration

Annual flow duration 05085000 FOREST RIVER AT MINTO, ND
----------------------------------------------------------------------------------------------------------------------
                              Monthly and annual flow duration, in cubic feet per second
______________________________________________________________________________________________________________________

 Percentage
  of days
 discharge     Jan.    Feb.    March   April    May     June    July    Aug.    Sept.   Oct.    Nov.    Dec.   Annual
 equaled or
  exceeded
______________________________________________________________________________________________________________________

  95           0       0       0       3.72     11.4    5.73    1.80    0       0       0.05    1.90    0.34    0.08
  90           0.20    0       0       15.7     13.8    7.59    2.90    0.51    0.09    1.00    2.50    0.54    0.44
  85           0.25    0       0.12    22.3     15.9    9.98    3.70    0.99    0.39    2.10    3.00    0.86    0.68
  80           0.39    0.08    0.24    26.4     17.8    12.4    5.30    1.90    0.73    2.70    4.10    1.10    1.00
  75           0.48    0.18    0.48    31.5     19.2    14.0    6.19    1.90    1.30    4.18    4.10    1.70    1.60
  70           0.59    0.24    0.68    37.4     20.5    15.5    6.81    3.13    1.80    4.84    4.80    2.20    3.11
  65           0.73    0.41    0.68    44.6     21.9    17.0    8.70    3.73    2.50    5.31    5.70    2.80    4.02
  60           0.91    0.41    0.96    52.8     23.4    18.5    10.2    4.27    4.11    6.00    5.70    2.80    4.56
  55           1.10    0.53    1.40    64.9     26.0    20.2    12.3    5.29    4.89    6.34    7.06    3.50    6.26
  50           1.40    0.70    1.90    79.3     29.5    22.9    13.8    6.23    5.34    6.67    7.86    3.50    7.15
  45           1.70    0.91    2.99    101      35.5    26.1    15.4    7.16    6.49    8.08    8.41    4.71    9.41
  40           1.70    1.20    4.01    128      42.6    29.7    17.5    7.94    7.20    8.99    9.24    5.20    11.2
  35           2.70    1.50    5.61    166      50.0    33.8    19.9    8.72    7.90    10.1    9.72    5.91    13.9
  30           3.30    2.00    9.27    217      60.0    38.4    23.2    10.7    9.00    11.2    11.2    6.44    17.1
  25           3.30    2.60    18.5    278      78.5    44.4    27.5    12.3    10.1    12.8    12.3    7.40    20.8
  20           5.12    2.60    40.2    360      98.6    53.0    34.2    14.1    12.8    14.1    13.5    7.83    28.4
  15           5.75    4.15    98.8    504      130     64.7    44.4    17.5    15.3    15.3    15.0    9.62    43.0
  10           6.71    5.04    191     787      189     82.9    66.0    22.8    19.6    17.6    16.5    11.3    77.2
  5            8.14    6.46    406     1,350    384     152     118     46.3    28.2    22.9    19.4    13.3    203

--------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------
                            Probability of annual high discharges
                                  [ng, statistic not given]
__________________________________________________________________________________________________

                                                       Maximum average discharge
                                                               (ft3/s)
                                       ___________________________________________________________

             Recurrence     Maximum
Exceedance    interval   instantaneous  3-day period  7-day period  15-day period  30-day period
probability    (years)      (ft3/s)
__________________________________________________________________________________________________

  0.99         1.01         40.6            26.6        23.1          17.4           13.8
  0.95         1.05         110             74.8        61.2          45.7           33.5
  0.90         1.11         184             127         101           74.6           52.9
  0.80         1.25         336             235         181           132            90.6
  0.50         2            1,000           717         524           368            243
  0.20         5            2,790           2,010       1,420         943            617
  0.10         10           4,630           3,340       2,310         1,490          983
  0.04         25           7,780           5,600       3,830         2,370          1,590
  0.02         50           10,800          7,730       5,240         3,150          2,150
  0.01         100          14,300          10,200      6,900         4,040          2,800
  0.005        200          18,400          13,100      8,820         5,040          3,560
  0.002        500          24,900          ng          ng            ng             ng

-------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------
           Annual peak discharge and corresponding gage height, period of record
                                 [--, no data]
_____________________________________________________________________________________

                       Gage     Peak                             Gage     Peak
Water    Date         height  discharge   Water    Date         height  discharge
year                  (feet)   (ft3/s)    year                  (feet)   (ft3/s)
_____________________________________________________________________________________

          Annual peak discharge, by year, and corresponding gage height

  11882    April     --         2,200        1969   April 12    7.67     3,960
  11897    April     --         1,850        1970   April 9     7.04     2,220
  11907    April     --         1,750        1971   April 10    5.84     2,460
  11916    April     --         1,600        1972   March 17    5.96     2,120
  1944     April 10    5.00     650          1973   June 19     1.93     208
  1945     March 27    2.11     250          1974   April 16    7.79     4,580
  1946     March 22  --         1,000        1975   April 15    6.73     1,600
  1947     March 25    4.12     1,100        1976   March 31    7.03     1,500
  1948     April 19    11.80    11,500       1977   April 10    1.58     77.0
  1949     April 7     8.19     2,020        1978   March 31    6.52     1,600
  1950     April 18    11.80    16,600       1979   April 20    8.93     6,730
  1951     April 5     3.60     900          1980   April 1     2.01     167
  1952     April 2     2.78     370          1981   June 28     2.04     176
  1953     June 4      3.53     910          1982   July 26     4.07     1,140
  1954     June 16     2.61     391          1983   March 15    3.52     820
  1955     April 2     8.56     4,200        1984   March 26    2.77     394
  1956     April 21    6.63     2,930        1985   March 14    3.39     640
  1957     March 23    2.72     461          1986   March 19    3.40     690
  1958     June 10     2.72     463          1987   April 4     6.91     2,360
  1959     April 2     2.45     338          1988   May 29      3.71     945
  1960     April 6     5.60     2,050        1989   April 18    2.49     371
  1961     March 22    1.90     147          1990   April 15    1.56     58.0
  1962     April 19    6.68     2,400        1991   April 4     1.54     60.0
  1963     March 24    2.54     250          1992   March 8     3.34     640
  1964     June 21     4.31     1,460        1993   July 28     3.70     705
  1965     April 12    7.48     3,710        1994   March 26  --         533
  1966     March 21    7.82     3,100        1995   March 19  5.41       1,680
  1967     March 31    7.22     3,070        1996   April 13    8.53     3,500
  1968     March 27    2.31     315          1997   April 20  --         2,140

Annual peak discharge, from highest to lowest, and corresponding gage height

  1950     April 18    11.80    16,600       1970   April 9     7.04     2,220
  1948     April 19    11.80    11,500       11882  April     --         2,200
  1979     April 20    8.93     6,730        1997   April 20  --         2,140
  1974     April 16    7.79     4,580        1972   March 17    5.96     2,120
  1955     April 2     8.56     4,200        1960   April 6     5.60     2,050
  1969     April 12    7.67     3,960        1949   April 7     8.19     2,020
  1965     April 12    7.48     3,710        11897  April     --         1,850
  1996     April 13    8.53     3,500        11907  April     --         1,750
  1966     March 21    7.82     3,100        1995   March 19  5.41       1,680
  1967     March 31    7.22     3,070        11916  April     --         1,600
  1956     April 21    6.63     2,930        1975   April 15    6.73     1,600
  1971     April 10    5.84     2,460        1978   March 31    6.52     1,600
  1962     April 19    6.68     2,400        1976   March 31    7.03     1,500
  1987     April 4     6.91     2,360        1964   June 21     4.31     1,460
  1982     July 26     4.07     1,140        1984   March 26    2.77     394
  1947     March 25    4.12     1,100        1954   June 16     2.61     391
  1946     March 22  --         1,000        1989   April 18    2.49     371
  1988     May 29      3.71     945          1952   April 2     2.78     370
  1953     June 4      3.53     910          1959   April 2     2.45     338
  1951     April 5     3.60     900          1968   March 27    2.31     315
  1983     March 15    3.52     820          1945   March 27    2.11     250
  1993     July 28     3.70     705          1963   March 24    2.54     250
  1986     March 19    3.40     690          1973   June 19     1.93     208
  1944     April 10    5.00     650          1981   June 28     2.04     176
  1985     March 14    3.39     640          1980   April 1     2.01     167
  1992     March 8     3.34     640          1961   March 22    1.90     147
  1994     March 26  --         533          1977   April 10    1.58     77.0
  1958     June 10     2.72     463          1991   April 4     1.54     60.0
  1957     March 23    2.72     461          1990   April 15    1.56     58.0

----------------------------------------------------------------------------------------
1Determined by U.S. Army Corps of Engineers; not used in statistics.
---------------------------------------------------------------------------------------------------------------------------------
                             Monthly and annual mean discharges, in cubic feet per second
          [Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]
__________________________________________________________________________________________________________________________________

Year     Oct.     Nov.     Dec.     Jan.     Feb.     March    April    May      June     July     Aug.     Sept.    Annual
__________________________________________________________________________________________________________________________________

1944    --      --       --       --       --       --       90.0     24.1     20.8     7.42     1.76     7.22     --
1945    2.44    14.7     11.2     2.55     1.64     89.6     47.3     20.1     15.2     5.59     2.90     0.987    18.0
1946    2.12    2.76     1.05     0.500    0.196    154.9    42.2     10.6     8.90     5.36     0        2.98     19.5
1947    5.07    5.83     2.74     0.497    0.021    90.0     96.7     17.2     15.5     19.6     5.37     3.65     21.9
1948    3.91    6.10     5.23     3.45     0.755    0.177    1,189    106.3    40.5     18.7     9.51     4.74     114.2

1949    4.05    7.01     3.68     1.14     0.500    0.594    482.5    37.5     17.4     11.2     3.30     0.653    47.0
1950    5.61    6.97     5.00     0.700    0.700    0.797    1,573    1,515    54.1     28.3     8.05     8.93     267.9
1951    8.41    9.24     4.58     3.65     4.50     31.2     198.7    27.4     15.5     6.48     9.32     8.42     27.1
1952    6.38    6.71     4.10     1.10     0.686    3.57     96.0     16.4     7.57     29.1     5.35     3.01     14.9
1953    2.21    4.19     1.97     0.574    0.079    2.98     21.9     16.5     51.4     10.1     2.14     0.270    9.50

1954    1.80    4.57     2.42     0.281    0.232    24.7     39.8     18.3     43.8     10.0     11.1     6.43     13.6
1955    7.01    6.57     4.00     1.31     0.514    0.032    291.1    22.1     92.4     11.2     2.85     1.69     36.3
1956    5.16    5.31     1.96     0.526    0.476    0.584    511.3    87.9     208.8    26.7     11.0     14.0     72.0
1957    9.96    15.8     6.44     4.47     1.53     47.1     25.8     20.4     14.9     6.45     7.78     56.6     18.1
1958    12.8    14.2     6.85     2.62     0.843    6.00     24.9     16.3     40.9     12.8     3.80     2.07     12.0

1959    7.73    6.53     0.710    0.268    0.100    10.8     107.2    18.4     11.0     5.71     2.15     0.440    14.2
1960    5.57    4.57     3.71     1.87     0.986    20.6     605.9    30.7     15.2     4.63     1.90     0.937    57.3
1961    1.62    4.11     0.742    0.635    0        23.4     24.4     11.6     5.18     5.64     0.513    0        6.51
1962    2.48    3.35     1.06     0.190    0        0        398.4    63.2     266.5    20.2     11.8     8.21     64.0
1963    13.2    15.8     4.87     0.945    0        42.2     34.5     18.9     22.7     26.5     3.73     0.797    15.4

1964    3.15    5.35     1.13     0.152    0.093    0.261    138.7    28.0     266.6    50.5     12.1     10.4     42.6
1965    12.6    10.1     4.99     3.79     2.77     2.84     481.4    63.0     71.9     23.4     11.5     16.0     58.2
1966    25.8    15.8     11.6     4.96     2.14     438.2    355.8    228.5    57.3     36.5     17.6     9.88     101.1
1967    10.9    10.8     8.15     3.54     2.48     123.9    358.8    210.7    39.4     17.4     8.90     5.71     66.8
1968    4.76    10.3     5.57     2.02     1.55     66.5     46.0     21.3     18.7     16.6     11.8     10.5     18.0

1969    8.91    10.9     5.61     0.822    0.407    0.456    521.5    53.3     20.2     12.3     4.70     5.14     53.2
1970    6.50    7.93     5.99     5.38     2.26     0.794    479.5    139.5    41.9     39.8     11.4     6.53     62.0
1971    9.14    10.8     4.40     0.896    0.947    7.45     512.3    59.5     30.4     67.1     21.0     11.6     60.9
1972    12.3    14.6     5.64     0.801    0.259    269.8    356.3    71.9     31.2     10.0     4.51     4.42     65.1
1973    8.08    7.82     2.04     0.400    0.526    59.5     39.9     18.9     28.4     6.15     1.47     4.46     14.9

1974    11.7    4.40     3.09     2.55     0.587    0.913    660.7    485.7    176.3    27.5     19.6     7.60     116.6
1975    13.3    14.8     8.46     5.86     3.68     5.45     285.2    162.4    28.9     108.5    9.28     6.54     54.5
1976    11.1    9.54     3.75     3.60     4.14     108.1    387.6    34.6     17.5     8.50     2.90     1.53     49.1
1977    1.40    2.19     0.489    0        0        11.0     32.9     17.7     10.9     6.79     3.14     4.16     7.57
1978    9.04    5.10     1.29     0.958    0.168    74.5     495.4    56.4     61.2     26.4     8.17     8.64     61.9

1979    5.48    3.07     2.12     2.00     1.35     1.00     1,189    363.0    63.6     63.4     12.1     17.2     142.9
1980    8.14    8.25     4.35     1.04     1.33     8.16     70.2     12.6     7.33     1.87     1.32     2.98     10.6
1981    5.34    10.4     8.19     4.10     17.3     33.3     38.8     15.2     21.5     12.3     4.83     15.3     15.5
1982    20.5    11.7     8.35     1.54     0.301    33.6     329.2    63.0     60.0     235.8    96.4     13.9     73.1
1983    59.1    23.6     13.4     9.66     12.5     236.9    197.3    52.5     32.6     18.7     7.92     17.1     57.0

1984    9.15    15.0     3.53     0.784    4.48     53.3     89.0     26.7     26.0     9.92     3.13     3.77     20.3
1985    3.94    3.60     1.56     0.121    0.001    175.4    63.7     31.2     26.5     5.25     6.08     8.53     27.4
1986    18.5    21.3     8.60     6.37     5.09     190.0    113.1    86.2     16.2     60.1     21.0     12.5     47.0
1987    20.1    10.9     8.71     9.65     7.31     122.3    848.6    81.9     28.6     27.3     15.0     7.68     98.4
1988    12.1    11.1     11.4     6.32     0.674    40.0     98.7     70.7     30.0     4.73     2.11     0.253    24.0

1989    5.20    3.20     1.10     1.14     1.10     1.00     90.6     30.9     8.74     2.32     0.150    0.011    12.1
1990    1.18    1.73     0.291    0        0        0.600    26.4     11.2     8.28     2.75     0.019    0        4.36
1991    0       0.971    0.831    0        0        2.87     23.0     14.0     4.21     14.5     6.44     12.3     6.61
1992    11.5    10.3     8.67     7.14     5.98     186.7    60.7     24.0     15.0     6.80     3.49     0.635    28.6
1993    2.71    5.38     3.61     1.58     2.74     13.1     97.6     23.7     21.8     132.6    327.6    69.0     59.0

1994    20.7    17.2     11.1     6.19     4.56     153.1    164.7    52.5     86.3     64.8     13.7     14.9     51.0
1995    12.9    10.6     9.06     6.64     6.03     392.1    308.4    143.7    61.9     76.1     20.2     11.2     88.8
1996    13.7    14.0     12.9     8.53     3.94     115.9    802.8    382.0    93.9     31.3     15.3     6.98     124.6
1997    9.63    9.99     6.20     3.19     2.86     2.79     1,040    322.1    58.6     348.5    72.1     28.5     158.6

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