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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 4.81 1963 0 m 0.540 1.18 2.19 0.54
November 5.87 1963 0 m 0.360 1.23 3.44 0.36
December 2.90 1963 0 m 0.140 0.59 4.19 0.14
January 0.103 1963 0 m 0 0.02 4.90 0
February 1.00 1976 0 m 0.070 0.22 3.40 0.07
March 138 1966 0 m 17.7 30.6 1.73 17.6
April 348 1969 0 m 40.6 65.8 1.62 40.5
May 69.3 1986 0 m 13.4 19.0 1.41 13.4
June 61.4 1967 0 m 9.38 15.2 1.62 9.35
July 103 1993 0 m 13.6 24.7 1.82 13.5
August 47.0 1993 0 m 3.41 9.01 2.64 3.39
September 9.07 1969 0 m 1.20 2.43 2.03 1.19
Annual 44.8 1969 0 m 8.36 9.94 1.19 100
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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 0 0 0 0 0 0 0 0 0 0
90 0 0 0 0 0 0 0 0 0 0 0 0 0
85 0 0 0 0 0 0 0 0 0 0 0 0 0
80 0 0 0 0 0 0 0 0 0 0 0 0 0
75 0 0 0 0.18 0 0 0 0 0 0 0 0 0
70 0 0 0 1.20 0.28 0 0 0 0 0 0 0 0
65 0 0 0 4.28 0.69 0 0 0 0 0 0 0 0
60 0 0 0 6.94 1.30 0.20 0 0 0 0 0 0 0
55 0 0 0 9.59 2.30 0.68 0 0 0 0 0 0 0
50 0 0 0 13.5 4.45 1.20 0.32 0 0 0 0 0 0
45 0 0 0 16.7 6.63 1.70 0.84 0 0 0 0 0 0
40 0 0 0.04 20.1 8.31 3.50 2.20 0 0 0 0 0 0
35 0 0 0.14 23.8 10.2 4.77 4.33 0.30 0 0 0 0 0.16
30 0 0 0.39 28.0 12.4 6.94 8.09 0.92 0.08 0 0 0 0.94
25 0 0 1.50 35.4 14.9 10.0 11.6 1.60 0.67 0 0 0 1.90
20 0 0 8.33 48.2 18.1 13.2 15.8 2.20 2.10 0.23 0 0 4.66
15 0 0 16.5 64.1 23.0 17.9 25.3 4.44 2.70 0.91 0.07 0 9.72
10 0 0 36.7 91.7 36.3 29.0 47.5 7.16 4.53 2.00 0.52 0 19.0
5 0 0 106 180 65.6 48.5 69.0 24.1 7.00 3.60 2.00 0.76 44.1
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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 ng 0 0 0 0
0.95 1.05 ng 0 0 0 0
0.90 1.11 ng 2.34 1.91 1.62 1.19
0.80 1.25 21.3 14.1 12.0 9.93 7.48
0.50 2 91.0 76.0 65.7 51.9 37.1
0.20 5 316 249 214 160 104
0.10 10 560 419 357 257 156
0.04 25 974 677 569 395 223
0.02 50 1,350 898 748 506 272
0.01 100 1,780 1,140 940 621 317
0.005 200 2,260 1,390 1,130 734 359
0.002 500 2,950 ng ng ng ng
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Probability of annual low discharges
[ng, statistic not given]
____________________________________________________________________________________
Minimum average discharge (ft3/s)
________________________________________________________________
Number of consecutive days
________________________________________________________________
Non- Recur-
exceed- rence
ance inter- 1 3 7 14 30 60 90 120 183
prob- val
ability (years)
____________________________________________________________________________________
0.05 20 ng ng ng ng ng ng ng 0 0
0.10 10 ng ng ng ng ng ng ng 0 0
0.20 5 ng ng ng ng ng ng ng 0 0
0.50 2 ng ng ng ng ng ng ng 0 0
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Probability of seasonal low discharges
[ng, statistic not given]
_____________________________________________________________________________________
Minimum average discharge (ft3/s)
_________________________________________________________
Number of consecutive days
_________________________________________________________
Non- Recurrence
exceedance interval 1 7 14 30 1 7 14 30
probability (years)
_____________________________________________________________________________________
December-January-February March-April-May
_______________________ _________________________
0.05 20 ng ng ng ng ng 0 0 0
0.10 10 ng ng ng ng ng 0 0 0
0.20 5 ng ng ng ng ng 0 0 0
0.50 2 ng ng ng ng ng 0 0 0.518
June-July-August September-October-November
_______________________ _________________________
0.05 20 0 0 0 0 0 0 0 0
0.10 10 0 0 0 0 0 0 0 0
0.20 5 0 0 0 0 0 0 0 0
0.50 2 0 0 0 0 0 0 0 0
_____________________________________________________________________________________
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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
1960 April 15 4.80 102 1978 March 29 7.64 600
1961 March 27 2.25 2.50 1979 April 21 5.39 365
1962 July 6 5.69 135 1980 March 23 4.50 130
1963 April 4 4.19 68.0 1981 -- -- 0
1964 April 25 3.52 46.0 1982 April 17 2.88 20.0
1965 April 13 4.80 173 1983 October 9 2.45 7.60
1966 March 15 7.12 660 1984 March 28 4.62 150
1967 June 15 5.39 257 1985 March 18 3.20 38.0
1968 April 7 3.86 91.0 1986 April 20 5.51 361
1969 April 8 8.77 1,270 1987 March 30 4.06 138
1970 June 16 3.21 39.0 1988 February 27 -- 1.00
1971 March 16 4.04 70.0 1989 March 31 8.47 700
1972 March 18 6.64 435 1990 -- -- 0
1973 March 26 2.47 13.0 1991 July 3 3.29 25.0
1974 March 20 2.93 30.0 1992 June 22 3.50 25.0
1975 July 1 4.52 133 1993 March 28 6.12 300
1976 March 23 5.37 200 1994 March 21 7.08 400
1977 -- -- 0
Annual peak discharge, from highest to lowest, and corresponding gage height
1969 April 8 8.77 1,270 1968 April 7 3.86 91.0
1989 March 31 8.47 700 1971 March 16 4.04 70.0
1966 March 15 7.12 660 1963 April 4 4.19 68.0
1978 March 29 7.64 600 1964 April 25 3.52 46.0
1972 March 18 6.64 435 1970 June 16 3.21 39.0
1994 March 21 7.08 400 1985 March 18 3.20 38.0
1979 April 21 5.39 365 1974 March 20 2.93 30.0
1986 April 20 5.51 361 1991 July 3 3.29 25.0
1993 March 28 6.12 300 1992 June 22 3.50 25.0
1967 June 15 5.39 257 1982 April 17 2.88 20.0
1976 March 23 5.37 200 1973 March 26 2.47 13.0
1965 April 13 4.80 173 1983 October 9 2.45 7.60
1984 March 28 4.62 150 1961 March 27 2.25 2.50
1987 March 30 4.06 138 1988 February 27 -- 1.00
1962 July 6 5.69 135 1977 -- -- 0
1975 July 1 4.52 133 1981 -- -- 0
1980 March 23 4.50 130 1990 -- -- 0
1960 April 15 4.80 102
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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
__________________________________________________________________________________________________________________________________
1960 0 0 0 0 0 0.184 41.8 1.51 0.207 0.058 0 0 3.59
1961 0 0 0 0 0 0.623 0.353 0.552 0.007 0 0 0 0.129
1962 0 0 0 0 0 3.10 40.5 23.2 52.0 64.2 11.2 3.26 16.5
1963 4.81 5.87 2.90 0.103 0 7.96 20.5 14.4 24.3 9.59 4.05 3.89 8.21
1964 2.79 1.68 0.410 0 0 1.01 25.6 11.7 10.1 9.20 1.22 0.790 5.36
1965 0 0 0 0 0 0 64.0 16.3 14.9 11.0 0.648 0 8.86
1966 0 0 0 0 0 138.0 25.2 20.0 8.12 6.80 4.90 0.406 17.2
1967 1.24 0.095 0.006 0 0 23.5 38.1 35.0 61.4 27.5 1.13 0 15.7
1968 0 0 0 0 0 0.111 8.46 11.7 7.29 6.88 0 1.15 2.97
1969 0.445 0.076 0.060 0 0 0 347.5 64.3 48.4 46.3 24.7 9.07 44.8
1970 2.15 0.872 0.023 0 0 1.70 16.9 16.6 16.1 1.86 0 0 4.68
1971 0 0 0 0 0 9.88 3.90 0.208 0.419 0.023 0 0 1.21
1972 0 0 0 0 0 83.9 20.9 58.3 16.0 1.98 2.55 0 15.5
1973 0 0 0 0 0 5.15 2.11 0.006 0 0 0 0 0.612
1974 0 0 0 0 0 7.81 6.93 2.32 0.793 0 0 0 1.50
1975 0 0 0 0 0 0 1.72 8.22 6.71 28.2 0.983 3.52 4.16
1976 0.224 0.001 0 0 1.00 48.9 18.6 1.81 0 0 0 0 5.91
1977 0 0 0 0 0 0 0 0 0 0 0 0 0
1978 0 0 0 0 0 36.9 113.4 9.47 6.13 78.0 0.595 0 20.4
1979 0 0 0 0 0 0 111.4 20.6 4.42 1.63 1.84 0.268 11.6
1980 0 0 0 0 0 28.0 19.0 0.354 0.201 0 0 0 3.98
1981 0 0 0 0 0 0 0 0 0 0 0 0 0
1982 0 0 0 0 0 0.133 10.3 1.14 0.056 0.105 0.73 0.776 1.04
1983 1.79 -- -- -- -- 0.028 0 0 0 0 0 0 --
1984 0 0 0 0 0.555 18.3 43.3 8.96 5.06 3.54 0.834 0 6.69
1985 -- -- -- -- -- 9.39 6.05 0.652 0.110 0 0 0 --
1986 -- -- -- -- -- 0.955 92.3 69.3 11.6 44.7 12.6 7.07 --
1987 -- -- -- -- -- 39.2 35.5 11.4 3.21 0 0 0 --
1988 -- -- -- -- 0.093 0.046 0 0 0 0 0 0 --
1989 -- -- -- -- -- 40.7 149.2 8.53 1.67 0.114 0 0 --
1990 -- -- -- -- -- 0 0 0 0 0 0 0 --
1991 -- -- -- -- -- 0 0 0 1.63 9.16 1.77 0 --
1992 -- -- -- -- -- 0.343 0.191 0.237 6.80 8.36 0.514 0.723 --
1993 -- -- -- -- -- 29.2 68.4 7.23 16.4 102.6 47.0 8.44 --
1994 -- -- -- -- -- 83.2 89.7 45.6 4.41 14.0 2.69 2.62 --
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U.S. Geological Survey Maintainer: Webmaster Last update: Tuesday, 31-Aug-2004 10:28:29 EDT Privacy || Disclaimer|| Accessibility || FOIA URL: http://nd.water.usgs.gov/pubs/ofr/ofr97416/htdocs/f.05051600.html |
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