05058000 SHEYENNE RIVER BELOW BALHILL DAM, ND


List Of Figures:

Annual mean discharge
Annual flow duration


LOCATION.--Lat 4701'50'', long 9805'50", in NW1/4 sec.18, T.141 N., R.58 W., Barnes County, Hydrologic Unit 09020204, on right bank 600 ft downstream from Baldhill Dam, 8 mi northwest of Valley City, and at mile 270.5.
DRAINAGE AREA.--7,470 mi2, approximately, of which about 5,560 mi2 is probably noncontributing, including 3,800 mi2 in closed basin.
PERIOD OF RECORD.--October 1949 to current year. Monthly discharge only for some periods, published in Water Supply Paper 1308.
GAGE.--Water-stage recorder and concrete control. Datum of gage is 1,200.00 ft above sea level.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,740 ft3/s, Apr. 24, 1979, gage height, 36.26 ft; maximum gage height, 36.46 ft, Apr. 20, 1996; no flow at times in 1950 and 1952-53.

Annual mean discharge

Annual mean discharge for 05058000 SHEYENNE RIVER BELOW BALDHILL DAM, ND
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                              Statistics of monthly and annual mean discharges
__________________________________________________________________________________________________________

                  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      622       1995            1.92      1956            53.4        93.5        1.75       2.88
November     291       1995            5.27      1956            65.4        60.5        0.93       3.53
December     231       1995            4.32      1980            63.8        52.9        0.83       3.44
January      182       1995            3.64      1956            60.4        43.8        0.73       3.26
February     300       1996            7.66      1956            70.6        64.6        0.91       3.81
March        1,570     1995            7.81      1955            206         329         1.60       11.1
April        3,330     1997            2.07      1953            618         761         1.23       33.4
May          2,910     1950            6.86      1959            304         512         1.68       16.4
June         1,150     1950            5.88      1958            155         187         1.21       8.34
July         1,270     1993            7.28      1959            123         199         1.62       6.62
August       1,560     1993            6.72      1977            79.6        226         2.84       4.30
September    577       1994            0.807     1955            55.3        102         1.84       2.98
Annual       574       1995            12.8      1991            154         144         0.94       100

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Annual flow duration

Annual flow duration for 05058000 SHEYENNE RIVER BELOW BALDHILL DAM, 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           8.01    8.30    6.99    2.70     7.57     7.81    7.42    3.90    2.20    2.20    8.74    8.32    6.64
  90           10.1    9.62    10.6    8.16     9.19     11.1    9.93    7.91    8.04    7.97    11.2    9.30    9.34
  85           15.3    11.9    13.6    9.66     12.1     12.5    11.6    9.39    9.72    9.38    13.6    15.5    11.2
  80           20.6    15.6    17.5    12.6     13.6     13.8    13.8    11.4    11.3    11.0    15.6    20.0    13.7
  75           24.5    22.3    22.6    16.3     15.5     16.3    15.4    12.9    12.9    12.2    17.8    26.1    16.0
  70           26.6    25.0    29.1    34.3     22.1     20.7    17.0    14.5    14.5    13.4    21.0    33.4    18.5
  65           38.4    29.8    40.8    55.3     37.1     29.3    20.0    16.0    15.8    14.7    25.4    39.3    22.7
  60           44.1    42.4    56.2    84.3     55.1     36.4    22.9    17.8    16.9    16.0    30.8    43.1    28.2
  55           48.1    49.2    63.1    128      71.8     48.3    27.2    19.6    18.1    17.4    37.4    46.2    35.3
  50           51.8    54.5    70.8    189      104      62.0    32.3    21.4    19.3    18.8    43.4    48.6    43.2
  45           55.3    58.4    80.5    270      131      77.5    41.5    24.1    21.1    22.1    48.2    51.0    51.3
  40           59.8    62.3    95.1    349      170      95.5    57.0    27.1    24.3    25.8    52.2    53.9    61.5
  35           65.0    68.4    120     429      196      116     75.1    30.4    28.5    33.0    56.8    59.9    71.6
  30           71.8    74.9    150     563      275      148     95.7    37.3    34.2    40.6    70.9    68.8    91.5
  25           81.2    91.3    186     777      325      184     130     46.5    42.6    48.6    91.6    87.4    117
  20           95.3    104     223     1,010    386      234     181     61.8    54.8    69.2    103     109     152
  15           112     135     270     1,340    507      299     234     98.7    72.4    87.1    120     122     208
  10           135     185     378     1,850    734      391     302     159     102     120     143     148     298
  5            158     220     979     2,970    1,220    547     447     302     260     192     244     178     606

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--------------------------------------------------------------------------------------------------
                            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         29.9           15.8         15.0          14.6           14.3
  0.95         1.05         105            67.8         60.7          52.4           44.2
  0.90         1.11         193            135          119           98.2           77.9
  0.80         1.25         378            288          251           200            150
  0.50         2            1,150          980          863           676            479
  0.20         5            2,790          2,530        2,340         1,910          1,360
  0.10         10           4,100          3,770        3,600         3,060          2,250
  0.04         25           5,850          5,380        15,060        14,250         13,140
  0.02         50           7,140          6,540        16,150        15,170         13,830
  0.01         100          8,390          7,630        17,170        16,020         14,450
  0.005        200          9,590          8,640        18,120        16,820         15,050
  0.002        500          11,100         ng           ng            ng             ng

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1 Statistical adjustment based on correlation between 3-, 7-, 15-, and 30-consecutive-day periods.
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           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

1948    April 27      --         4,600      1974    April 21        30.02    1,940
1950    May 23          32.62    3,150      1975    April 29        29.20    1,640
1951    April 19        28.00    1,270      1976    April 10        27.99    982
1952    August 29     --         400        1977    October 1       26.16    37.0
1953    July 16         29.40    1,980      1978    April 7         28.55    1,370
1954    March 11        28.28    1,270      1979    April 24        36.26    4,740
1955    April 13        28.86    1,640      1980    April 3         27.38    516
1956    April 26        30.25    2,070      1981    April 3         27.37    493
1957    September 4     27.50    598        1982    April 12        30.01    1,930
1958    July 17       --         240        1983    March 9         29.91    1,910
1959    November 18     26.83    190        1984    April 3         29.50    1,790
1960    April 17        29.24    1,570      1985    May 16          27.73    680
1961    November 27     27.88    697        1986    April 19        30.22    2,050
1962    April 10        27.67    778        1987    April 14        30.51    2,200
1963    November 15     26.30    56.0       1988    January 19      26.84    146
1964    June 28         27.51    679        1989    April 4         27.60    642
1965    April 14        32.69    2,980      1990    September 13    26.75    123
1966    March 28        32.72    3,250      1991    July 25         26.60    82.0
1967    April 9         29.00    1,560      1992    March 7         28.57    1,260
1968    June 11         27.92    974        1993    July 28         34.98    3,720
1969    April 19        35.47    4,580      1994    April 2         29.28    1,630
1970    April 19        28.23    1,230      1995    March 28        34.15    3,980
1971    April 20        29.75    1,830      1996    April 20        36.46    5,460
1972    April 26        27.82    991        1997    April 27        35.12    4,510
1973    March 29        26.50    90.0

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

1996    April 20        36.46    5,460      1994    April 2         29.28    1,630
1979    April 24        36.26    4,740      1960    April 17        29.24    1,570
1948    April 27      --         4,600      1967    April 9         29.00    1,560
1969    April 19        35.47    4,580      1978    April 7         28.55    1,370
1997    April 27        35.12    4,510      1951    April 19        28.00    1,270
1995    March 28        34.15    3,980      1954    March 11        28.28    1,270
1993    July 28         34.98    3,720      1992    March 7         28.57    1,260
1966    March 28        32.72    3,250      1970    April 19        28.23    1,230
1950    May 23          32.62    3,150      1972    April 26        27.82    991
1965    April 14        32.69    2,980      1976    April 10        27.99    982
1987    April 14        30.51    2,200      1968    June 11         27.92    974
1956    April 26        30.25    2,070      1962    April 10        27.67    778
1986    April 19        30.22    2,050      1961    November 27     27.88    697
1953    July 16         29.40    1,980      1985    May 16          27.73    680
1974    April 21        30.02    1,940      1964    June 28         27.51    679
1982    April 12        30.01    1,930      1989    April 4         27.60    642
1983    March 9         29.91    1,910      1957    September 4     27.50    598
1971    April 20        29.75    1,830      1980    April 3         27.38    516
1984    April 3         29.50    1,790      1981    April 3         27.37    493
1955    April 13        28.86    1,640      1952    August 29     --         400
1975    April 29        29.20    1,640      1958    July 17       --         240
1958    November 18     26.83    190        1991    July 25         26.60    82.0
1988    January 19      26.84    146        1963    November 15     26.30    56.0
1990    September 13    26.75    123        1976    October 1       26.16    37.0
1973    March 29        26.50    90.0

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Monthly and annual mean discharges, in cubic feet per second--Continued[Data
		werenot rounded in accordance with U.S. Geological Survey publication standards]
---------------------------------------------------------------------------------------------------------------------------
Year     Oct.     Nov.     Dec.     Jan.     Feb.     March     April    May      June     July     Aug.     Sept.    Annual
---------------------------------------------------------------------------------------------------------------------------

 1950    2.50     25.0     18.3     10.6     10.2     50.0      1,730    2,906    1,154    245.5    68.2     3.46     520.6
 1951    13.1     26.5     27.3     25.7     23.6     39.6      547.1    319.8    89.8     46.9     23.7     28.9     100.9
 1952    50.0     15.0     14.9     24.6     29.0     14.7      2.63     13.6     14.3     13.0     21.6     16.6     19.2
 1953    13.6     10.8     14.8     24.1     23.7     8.26      2.07     12.7     77.4     123.6    8.68     13.4     27.8
 1954    19.3     19.9     41.3     60.3     56.3     80.7      132.2    36.4     165.6    215.5    30.9     49.5     75.6

 1955    39.4     102.0    103.2    84.3     32.0     7.81      247.7    64.0     238.0    223.7    12.6     0.807    96.3
 1956    1.92     5.27     7.64     3.64     7.66     63.3      374.4    354.9    275.2    51.9     12.9     3.89     96.6
 1957    7.75     33.9     53.6     57.4     68.4     44.8      17.9     36.9     63.3     39.7     34.1     271.9    60.3
 1958    98.8     120.0    82.3     80.1     68.1     67.6      41.3     17.9     5.88     75.8     14.3     15.9     57.4
 1959    18.0     33.4     43.1     42.1     34.9     26.5      8.95     6.86     7.90     7.28     8.53     9.40     20.5

 1960    10.1     17.3     28.0     24.2     22.3     16.8      668.9    77.2     152.6    26.3     14.3     14.4     88.4
 1961    13.4     36.4     46.9     45.2     38.7     18.9      10.9     13.5     13.6     14.1     13.7     12.4     23.1
 1962    14.3     14.5     15.0     15.0     14.7     67.9      300.4    137.2    219.4    89.0     26.1     14.7     77.2
 1963    16.3     40.8     50.9     48.8     46.0     30.9      10.1     12.3     12.0     7.93     8.35     8.66     24.3
 1964    8.94     25.3     36.5     25.4     17.8     11.4      10.0     9.50     212.5    135.6    13.5     30.2     44.6

 1965    26.7     51.3     50.3     55.7     50.6     147.5     1,224    215.9    94.1     187.9    125.7    67.5     190.7
 1966    109.9    104.8    110.6    104.4    65.6     1,067     623.1    277.6    183.5    172.0    208.8    63.8     259.3
 1967    17.5     49.8     77.8     72.1     150.9    164.7     972.0    474.0    49.1     31.6     18.9     17.1     173.8
 1968    14.5     27.1     42.7     43.5     46.8     42.2      142.7    130.5    225.1    28.3     17.1     18.3     64.6
 1969    23.1     54.2     51.9     69.1     200.2    165.9     1,936    313.5    91.3     127.2    13.7     14.1     252.5

 1970    18.3     37.4     48.6     53.2     87.6     146.4     420.3    329.7    333.0    32.5     15.2     13.2     127.5
 1971    11.3     21.5     40.4     40.5     104.5    215.1     686.3    158.2    222.6    182.5    25.2     24.5     143.7
 1972    46.4     127.6    156.5    125.0    48.1     192.8     794.6    335.2    218.6    18.2     16.8     18.6     174.3
 1973    13.4     44.1     49.0     55.2     62.7     61.5      31.5     15.5     15.2     9.83     17.8     14.7     32.4
 1974    20.0     43.4     37.5     70.4     180.1    219.1     920.8    684.4    507.5    17.0     16.3     13.4     226.3

 1975    10.9     32.2     52.1     55.5     56.4     68.3      668.4    830.5    227.4    119.5    56.3     18.6     183.5
 1976    29.2     52.0     69.5     78.1     68.3     64.3      493.3    106.7    18.0     17.7     24.1     36.1     87.5
 1977    32.2     23.3     16.7     14.6     9.20     9.94      9.27     9.07     8.53     8.63     6.72     8.09     13.1
 1978    11.0     32.7     45.2     63.0     104.1    143.7     703.4    128.7    41.8     19.2     20.3     39.1     111.7
 1979    66.6     51.3     36.2     30.8     56.4     172.9     1,796    1,346    156.7    146.2    52.7     27.8     328.5

 1980    93.8     156.4    4.32     10.4     10.9     83.1      153.2    9.32     19.4     17.4     10.1     152.0    59.6
 1981    127.2    94.9     23.5     9.10     9.61     98.2      136.5    70.2     136.2    84.6     25.7     43.0     71.7
 1982    152.7    134.6    8.61     7.93     32.3     173.8     892.4    233.3    176.7    226.9    56.9     14.2     175.6
 1983    144.7    237.9    113.5    119.6    76.4     1,236     659.0    202.8    219.1    117.1    41.3     77.0     271.7
 1984    106.2    140.4    133.7    78.3     64.0     256.8     911.6    351.0    113.9    33.4     37.1     41.0     188.4

 1985    102.9    48.5     51.1     28.1     11.7     96.4      142.2    117.5    77.6     23.3     44.0     23.8     64.2
 1986    31.6     98.6     142.9    140.4    197.9    166.5     391.2    307.2    51.1     66.5     60.9     28.2     139.8
 1987    15.2     111.4    190.9    124.1    78.2     969.6     1,268    155.8    109.5    215.4    215.6    66.8     294.1
 1988    89.7     96.4     110.0    117.9    112.4    58.2      17.7     52.0     30.6     18.4     25.4     12.0     61.7
 1989    13.3     23.8     35.5     45.8     56.2     107.4     198.3    19.8     25.4     21.7     24.9     20.0     49.1

 1990    33.0     23.1     22.1     13.3     12.2     14.8      10.0     7.35     10.1     13.3     44.9     57.2     21.8
 1991    5.72     9.21     8.24     7.78     8.54     7.96      7.93     11.7     14.9     26.7     29.0     15.8     12.8
 1992    12.2     26.0     55.8     45.7     18.4     448.5     86.2     40.0     32.3     60.5     30.9     29.7     74.5
 1993    15.2     9.36     44.5     76.3     93.9     214.9     263.7    193.3    131.4    1,272    1,555    353.1    355.8
 1994    118.6    152.9    127.6    98.0     181.6    427.7     718.7    163.0    404.9    538.5    192.1    576.8    307.7

 1995    621.9    290.8    230.8    181.6    167.3    1,567     1,998    797.9    285.9    246.8    292.5    188.3    574.4
 1996    70.5     75.9     104.7    124.8    300.1    336.9     2,969    953.2    294.5    248.1    107.9    19.6     464.0
 1997    32.1     131.8    187.5    168.1    172.7    187.1     3,329    1,540    192.2    224.6    82.1     45.6     522.9

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