05051500 RED RIVER OF THE NORTH AT WAHPETON, ND


List Of Figures:

Annual mean discharge
Annual flow duration
Highest daily mean discharge for period of record
Highest daily mean gage height for period of record


LOCATION.--Lat 4615'55'', long 9635'40", in NE1/4 sec.8, T.132 N., R.47 W., Richland County, Hydrologic Unit 09020104, on left bank in Wahpeton, 800 ft downstream from confluence of Bois de Sioux and Otter Tail Rivers, and at mile 548.6.
DRAINAGE AREA.--4,010 mi2, approximately.
PERIOD OF RECORD.--April 1942 to October 1942, March 1943 to current year. Gage-height records collected in this vicinity since 1917 are contained in reports of the National Weather Service.
GAGE.--Water-stage recorder and concrete and wooden dam. Datum of gage is 942.97 ft above sea level. Prior to Aug. 6, 1943, National Weather Service nonrecording gage 800 ft downstream, converted to present datum. Aug. 6, 1943, to Oct. 27, 1950, nonrecording gage at present site and datum.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 12,800 ft3/s, Apr. 15, 1997, gage height, 16.34 ft; maximum gage height, 19.42 ft, Apr. 6, 1997, backwater from ice (from floodmark); minimum daily discharge, 1.7 ft3/s, Aug. 28 to Sept. 5, 1976, and Sept. 9-10, 1976, gage height 0.63 feet, Aug. 29, 1976.
EXTREMES OUTSIDE PERIOD OF RECORD.--A stage of 17.0 ft, discharge, 10,500 ft3/s, occurred in the spring of 1897.

Annual mean discharge

Annual mean discharge for 05051500 Red River of the North at Wahpeton, North Dakota
----------------------------------------------------------------------------------------------------------
                              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      1,600     1994            5.72      1977            329         286         0.87       4.52
November     952       1987            7.40      1977            307         220         0.72       4.23
December     820       1987            6.60      1977            276         180         0.65       3.80
January      678       1986            8.81      1977            269         160         0.60       3.70
February     721       1997            18.0      1977            284         164         0.58       3.91
March        2,630     1995            84.3      1977            670         525         0.78       9.23
April        8,720     1997            138       1977            1,420       1,400       0.98       19.6
May          3,340     1997            22.5      1977            1,110       763         0.68       15.4
June         2,680     1962            90.0      1977            1,060       659         0.62       14.5
July         2,790     1993            65.6      1977            780         595         0.76       10.7
August       2,500     1993            53.5      m               422         424         1.00       5.82
September    2,150     1993            2.18      1976            334         357         1.07       4.59
Annual       1,600     1997            54.0      1977            601         336         0.56       100

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Annual flow duration

Annual flow duration for 05051500 Red River of the North at Wahpeton, North Dakota
----------------------------------------------------------------------------------------------------------------------
                              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           74.6    88.2    140      244      204      169      101      59.1     36.2    65.1    64.1    55.7    73.4
  90           90.3    104     177      339      302      222      172      83.8     57.0    80.4    90.7    80.6    105
  85           104     124     206      401      373      294      221      106      77.4    98.3    108     106     133
  80           127     138     233      451      435      386      262      139      98.5    116     125     122     160
  75           145     152     250      494      505      464      324      168      120     134     137     136     187
  70           157     172     268      547      592      533      372      196      140     152     148     154     214
  65           171     190     300      612      690      629      411      221      163     173     169     170     247
  60           188     206     334      681      754      723      462      245      184     195     193     186     280
  55           208     221     370      753      818      815      521      278      202     218     216     202     321
  50           227     240     409      832      896      899      588      319      224     251     244     218     363
  45           247     263     450      939      977      982      658      346      262     290     276     241     408
  40           270     290     489      1,080    1,080    1,100    725      373      298     316     304     277     455
  35           308     323     528      1,260    1,190    1,240    819      400      334     341     333     325     509
  30           350     346     593      1,470    1,370    1,390    930      456      376     378     367     366     594
  25           384     374     690      1,700    1,570    1,540    1,040    516      421     415     402     401     696
  20           414     420     819      1,940    1,780    1,680    1,170    597      476     465     458     434     820
  15           458     463     988      2,320    2,000    1,830    1,400    696      536     525     536     466     1,030
  10           514     532     1,380    2,980    2,250    2,080    1,630    823      647     670     650     523     1,420
  5            593     632     2,340    4,690    2,630    2,440    2,160    1,100    885     905     809     664     2,060

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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)1
__________________________________________________________________________________________________

  0.99         1.01         230            22225        22220         22205           192
  0.95         1.05         460            22450        22440          426            364
  0.90         1.11         670            22650        22630          584            503
  0.80         1.25         1,030          22990        22940          848            734
  0.50         2            2,250          222,210       2,090         1,690          1,440
  0.20         5            4,450          224,350       4,110         3,260          2,680
  0.10         10           6,200          226,100       5,760         4,530          3,620
  0.04         25           8,050          227,900      227,510        6,380          4,910
  0.02         50           9,900          229,750      229,250        7,930          5,930
  0.01         100          11,900         2211,700     2211,200       9,600          6,980
  0.005        200          14,200         2214,000     2213,400       11,400         8,060
  0.002        500          18,000         ng           ng            ng             ng

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1From U.S. Army Corps of Engineers, May 2000.

2Statistical adjustment based on correlation between 3-, 7-, 15-, and 30-consecutive-day periods.

Highest daily mean discharge for period of record

Annual mean discharge for 05051500 Red River of the North at Wahpeton, North Dakota

Highest daily mean gage height for period of record

Highest daily mean gage height for period of record
-------------------------------------------------------------------------------------
           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

1942    June 7       10.49    3,280      1970    April 8      6.93     1,450
1943    April 2      14.75    5,000      1971    March 18     6.74     927
1944    June 6       12.11    4,360      1972    March 19     11.67    3,380
1945    March 17     11.44    3,910      1973    March 15     6.08     1,220
1946    March 22     9.74     3,110      1974    May 24       6.14     1,250
1947    April 12     11.90    4,610      1975    July 3       10.84    3,850
1948    April 6      8.58     2,300      1976    March 26     9.00     2,700
1949    July 10      9.24     2,290      1977    June 25      4.49     526
1950    April 2      11.62    4,190      1978    March 31     14.04    6,250
1951    April 7      14.01    6,090      1979    April 14     15.44    7,050
1952    April 12     14.99    7,130      1980    April 1      10.71    3,100
1953    June 21      9.87     3,150      1981    August 2     4.54     512
1954    June 9       7.59     1,860      1982    April 1      12.26    3,120
1955    April 2      6.99     1,150      1983    March 13     5.70     880
1956    April 14     7.88     1,980      1984    March 28     13.43    4,710
1957    April 22     8.82     2,290      1985    June 1       10.71    3,690
1958    April 15     5.59     866        1986    March 30     14.31    6,140
1959    May 27       6.17     1,050      1987    October 1    7.46     1,770
1960    April 7      8.89     2,370      1988    March 27     5.58     911
1961    June 8       4.72     548        1989    April 5      17.95    8,370
1962    June 11      13.98    5,650      1990    March 18     5.72     900
1963    June 11      11.38    3,830      1991    July 3       9.52     2,980
1964    May 6        7.39     1,700      1992    March 8      8.46     2,000
1965    April 11     14.34    5,690      1993    March 31     14.33    6,080
1966    March 18     12.91    4,760      1994    March 23     13.59    5,000
1967    June 15      8.81     2,500      1995    March 17     14.88    6,370
1968    May 18       4.95     708        1996    May 19     --         5,400
1969    April 10     16.34    9,200      1997    April 15   --         12,800

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

1997    April 15   --         12,800     1966    March 18     12.91    4,760
1969    April 10     16.34    9,200      1984    March 28     13.43    4,710
1989    April 5      17.95    8,370      1947    April 12     11.90    4,610
1952    April 12     14.99    7,130      1944    June 6       12.11    4,360
1979    April 14     15.44    7,050      1950    April 2      11.62    4,190
1995    March 17     14.88    6,370      1945    March 17     11.44    3,910
1978    March 31     14.04    6,250      1975    July 3       10.84    3,850
1986    March 30     14.31    6,140      1963    June 11      11.38    3,830
1951    April 7      14.01    6,090      1985    June 1       10.71    3,690
1993    March 31     14.33    6,080      1972    March 19     11.67    3,380
1965    April 11     14.34    5,690      1942    June 7       10.49    3,280
1962    June 11      13.98    5,650      1953    June 21      9.87     3,150
1996    May 19     --         5,400      1982    April 1      12.26    3,120
1943    April 2      14.75    5,000      1946    March 22     9.74     3,110
1994    March 23     13.59    5,000      1980    April 1      10.71    3,100
1991    July 3       9.52     2,980      1974    May 24       6.14     1,250
1976    March 26     9.00     2,700      1973    March 15     6.08     1,220
1967    June 15      8.81     2,500      1955    April 2      6.99     1,150
1960    April 7      8.89     2,370      1959    May 27       6.17     1,050
1948    April 6      8.58     2,300      1971    March 18     6.74     927
1949    July 10      9.24     2,290      1988    March 27     5.58     911
1957    April 22     8.82     2,290      1990    March 18     5.72     900
1992    March 8      8.46     2,000      1983    March 13     5.70     880
1956    April 14     7.88     1,980      1958    April 15     5.59     866
1954    June 9       7.59     1,860      1968    May 18       4.95     708
1987    October 1    7.46     1,770      1961    June 8       4.72     548
1964    May 6        7.39     1,700      1977    June 25      4.49     526
1970    April 8      6.93     1,450      1981    August 2     4.54     512

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---------------------------------------------------------------------------------------------------------------------------------
                             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
__________________________________________________________________________________________________________________________________

 1942    --       --       --       --       --       --        --       1,021    1,278    934.2    391.8    476.3    --
 1943    391.9    --       --       --       --       412.3     2,152    1,669    1,818    1,069    562.4    402.8    --
 1944    415.3    330.8    281.6    196.5    152.4    195.2     641.2    960.6    1,957    1,380    418.8    614.7    628.4
 1945    753.6    698.3    510.2    405.3    375.7    1,250     1,133    837.5    916.3    305.0    146.2    140.7    623.6
 1946    224.4    260.1    221.5    189.7    127.5    823.1     1,114    604.5    362.5    716.1    607.9    501.3    481.4

 1947    597.2    583.3    482.6    413.2    345.0    486.5     2,021    1,627    1,487    1,083    231.7    207.0    797.7
 1948    196.3    205.1    186.5    148.7    115.2    256.1     1,279    1,403    545.3    255.5    217.1    179.2    415.7
 1949    130.8    117.7    54.8     69.8     85.7     242.3     406.4    217.9    224.7    727.7    198.2    92.1     215.1
 1950    97.8     99.3     95.0     87.9     132.4    446.5     1,340    1,572    1,458    1,526    675.5    211.6    648.0
 1951    146.2    124.3    126.1    155.2    147.9    241.6     2,208    1,615    1,063    592.8    370.9    331.6    593.5

 1952    354.7    384.9    501.3    524.5    535.2    468.4     3,161    1,876    1,554    746.2    409.4    443.5    910.3
 1953    351.6    235.8    189.2    166.5    192.7    549.6     542.9    756.0    1,669    1,347    856.3    564.9    620.5
 1954    387.9    462.9    453.7    376.8    350.2    561.9     677.0    851.7    1,041    540.6    200.6    234.8    511.9
 1955    124.3    137.5    198.7    245.5    186.4    266.5     543.1    330.2    305.9    509.7    445.4    448.1    312.3
 1956    376.2    305.3    183.9    247.7    215.5    259.7     847.3    812.0    699.4    240.8    272.8    118.7    381.3

 1957    70.8     49.7     65.7     106.0    113.9    448.2     672.1    930.9    1,067    790.5    521.6    461.6    442.9
 1958    375.1    460.9    385.5    316.5    285.4    484.5     656.1    259.7    141.5    362.7    227.7    179.4    344.9
 1959    142.7    160.0    172.6    259.7    245.0    315.5     370.1    425.8    564.0    514.3    213.8    162.2    295.7
 1960    152.6    147.0    201.6    233.5    249.0    343.5     901.6    869.1    796.9    466.6    180.8    111.6    387.5
 1961    98.8     124.8    150.3    155.6    180.5    300.0     290.8    389.0    425.7    190.1    78.9     79.0     205.2

 1962    108.1    102.9    75.0     84.3     102.4    251.3     1,028    1,929    2,675    2,756    1,983    746.4    992.4
 1963    434.0    360.7    326.5    312.3    232.9    397.6     607.5    509.4    1,591    480.9    157.1    159.2    463.6
 1964    220.8    178.8    147.9    151.0    161.5    182.4     776.5    978.9    600.3    292.2    79.5     125.1    324.4
 1965    224.4    213.7    236.0    197.9    184.3    226.0     1,789    1,490    2,526    1,230    415.0    422.3    762.4
 1966    724.2    545.7    510.0    500.0    443.9    1,651     1,492    2,076    1,671    628.5    522.7    350.4    929.3

 1967    448.9    457.4    403.9    391.1    363.4    659.5     1,388    1,239    1,182    882.5    227.2    114.6    647.3
 1968    192.8    176.3    177.9    137.3    141.7    308.9     414.8    570.6    584.1    428.1    227.0    161.4    293.8
 1969    295.4    311.5    257.9    219.5    402.1    526.1     4,436    2,606    1,317    470.7    204.8    64.4     923.6
 1970    109.2    128.4    135.6    158.2    179.2    254.4     629.1    755.9    815.9    459.8    112.1    26.4     313.8
 1971    89.6     170.2    147.5    130.6    132.8    424.4     547.2    368.5    342.3    465.9    165.8    167.9    263.3

 1972    239.2    491.5    641.1    595.7    475.0    1,295     1,734    1,541    1,547    833.5    624.0    451.3    872.5
 1973    436.2    361.8    390.7    351.7    359.5    791.4     547.8    370.4    301.4    151.2    121.9    114.3    358.5
 1974    372.3    528.9    494.0    445.5    492.3    549.0     679.6    1,004    1,115    696.3    349.3    247.4    581.2
 1975    282.4    275.0    177.8    187.8    249.8    341.8     1,258    1,231    1,283    1,787    585.3    363.0    670.6
 1976    314.5    308.7    268.7    246.3    360.3    961.6     725.5    329.6    158.1    109.4    53.5     2.18     319.9


 1977    5.72     7.40     6.60     8.81     18.0     84.3      138.0    22.5     90.0     65.6     53.5     149.1    54.0
 1978    227.5    329.5    364.8    394.6    328.6    1,360     3,112    1,698    1,206    1,482    277.8    105.0    908.9
 1979    141.7    117.9    114.2    104.1    102.7    324.5     3,245    1,977    1,763    1,223    825.1    600.9    878.5
 1980    418.2    364.0    338.9    404.8    417.9    719.4     935.9    568.4    537.1    188.4    126.7    34.8     420.7
 1981    65.0     112.4    108.9    103.6    153.0    227.0     211.3    183.9    208.2    186.8    225.6    52.0     153.2

 1982    142.3    182.9    197.6    231.4    253.3    602.4     1,179    888.8    731.4    556.9    299.5    179.5    454.2
 1983    410.6    362.6    353.3    327.1    325.1    541.4     434.2    324.2    212.8    335.0    351.4    345.8    360.8
 1984    312.9    273.2    233.5    265.7    350.2    1,159     1,763    984.0    1,969    868.7    357.9    137.9    721.6
 1985    440.6    501.3    367.1    268.4    311.2    1,193     954.5    1,299    1,762    1,157    1,104    938.9    860.7
 1986    802.9    769.5    751.5    677.7    663.2    1,679     2,907    3,085    2,485    1,664    782.8    1,434    1,477

 1987    1,247    952.2    820.3    613.6    687.1    958.5     725.1    584.5    492.6    364.9    188.2    187.1    652.1
 1988    145.3    145.2    142.5    151.8    257.9    528.8     423.4    376.1    221.4    85.6     87.8     70.5     219.5
 1989    68.1     61.8     51.6     71.8     159.1    578.1     3,003    1,110    728.3    317.9    152.0    219.3    541.5
 1990    157.4    130.9    111.3    124.1    167.9    482.0     422.6    513.2    528.3    392.2    234.1    156.6    285.7
 1991    114.4    82.8     86.6     81.9     97.2     330.9     459.8    752.0    1,025    1,497    532.1    802.2    490.6

 1992    289.4    165.1    137.1    179.7    227.2    576.9     493.4    424.7    450.8    401.4    431.5    284.6    339.0
 1993    183.1    197.4    198.7    186.2    239.0    922.1     2,086    1,095    1,586    2,787    2,496    2,148    1,181
 1994    1,599    842.1    354.8    558.7    574.1    1,967     2,609    2,366    1,343    1,644    641.3    292.3    1,238
 1995    441.5    307.3    425.2    383.1    444.1    2,629     2,619    2,419    1,523    855.2    318.3    270.0    1,056
 1996    756.5    884.0    481.3    494.6    500.6    1,893     2,740    2,378    1,376    595.0    346.5    209.8    1,055
 1997    219.5    303.1    398.1    462.6    721.3    941.9     8,717    3,344    1,777    1,044    765.3    581.9    1,600

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