Maintainer: Webmaster
Last update: Wednesday, 23-Feb-2005 09:46:03 EST
Privacy || Disclaimer|| Accessibility || FOIA
URL: http://nd.water.usgs.gov/pubs/ofr/ofr9821/htdocs/l.05089500.html
----------------------------------------------------------------------------------------------------------
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 4.20 1981 0 m 0.680 0.95 1.41 2.02
November 2.10 1981 0 m 0.460 0.44 0.97 1.36
December 2.54 1983 0 m 0.260 0.49 1.92 0.76
January 0.684 1965 0 m 0.110 0.20 1.84 0.32
February 1.69 1983 0 m 0.190 0.43 2.32 0.56
March 19.8 1983 0 m 3.32 4.55 1.37 9.92
April 55.6 1979 0.940 1961 17.8 15.0 0.84 53.1
May 21.0 1974 0.294 1961 5.70 5.84 1.02 17.0
June 25.5 1964 0.013 1961 3.12 4.84 1.55 9.31
July 3.20 1966 0 1961 0.800 0.86 1.08 2.39
August 3.37 1980 0 m 0.460 0.81 1.77 1.37
September 5.39 1980 0 m 0.610 1.13 1.83 1.83
Annual 6.00 1974 0.311 1961 2.78 1.61 0.58 100
__________________________________________________________________________________________________________
----------------------------------------------------------------------------------------------------------------------
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 0.10 0.28 0.04 0 0 0 0 0 0 0
90 0 0 0 0.50 0.47 0.14 0 0 0 0 0 0 0
85 0 0 0 0.70 0.47 0.19 0 0 0 0 0 0 0
80 0 0 0 0.97 0.79 0.26 0 0 0 0.06 0.09 0 0
75 0 0 0 1.30 0.79 0.34 0.02 0 0 0.10 0.13 0 0
70 0 0 0 1.90 1.00 0.46 0.08 0 0 0.15 0.19 0 0
65 0 0 0 2.63 1.00 0.46 0.10 0 0 0.19 0.19 0 0.07
60 0 0 0.04 3.38 1.30 0.62 0.16 0 0 0.23 0.22 0 0.10
55 0 0 0.10 4.01 1.70 0.84 0.16 0 0 0.29 0.27 0.03 0.19
50 0 0 0.10 4.57 1.70 0.84 0.26 0 0.05 0.37 0.32 0.10 0.26
45 0 0 0.18 5.66 2.30 1.10 0.26 0 0.16 0.37 0.39 0.10 0.26
40 0 0 0.18 7.55 2.90 1.10 0.34 0.07 0.16 0.46 0.47 0.12 0.36
35 0 0 0.24 8.82 4.02 1.50 0.44 0.09 0.26 0.46 0.47 0.19 0.50
30 0.06 0.06 0.43 12.1 5.13 2.00 0.56 0.19 0.33 0.57 0.47 0.19 0.70
25 0.10 0.10 1.00 16.5 5.80 2.00 0.73 0.24 0.42 0.57 0.56 0.30 0.97
20 0.21 0.18 1.80 21.1 7.09 2.70 0.93 0.31 0.53 0.57 0.67 0.38 1.30
15 0.28 0.27 4.82 27.6 9.52 4.07 1.20 0.50 0.67 0.89 0.67 0.38 1.90
10 0.38 0.33 9.70 41.1 13.2 5.28 1.50 0.64 0.84 1.10 0.81 0.48 4.50
5 0.60 0.50 17.9 78.4 21.0 8.41 2.60 1.30 1.70 1.40 1.20 0.75 11.1
______________________________________________________________________________________________________________________
--------------------------------------------------------------------------------------------------
Probability of occurrence of annual high discharges
[ng, statistic not given]
__________________________________________________________________________________________________
Maximum mean 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 11.4 4.84 2.95 1.58 1.12
0.95 1.05 28.9 11.2 7.32 4.40 3.02
0.90 1.11 46.2 17.2 11.4 7.15 4.81
0.80 1.25 79.1 28.1 18.9 12.2 8.04
0.50 2 204 67.6 44.7 29.0 18.3
0.20 5 475 150 92.8 56.9 34.6
0.10 10 710 221 129 75.4 45.0
0.04 25 1,060 325 178 97.2 56.8
0.02 50 1,350 413 215 112 64.5
0.01 100 1,660 507 252 125 71.3
0.005 200 1,990 609 288 136 77.2
0.002 500 2,460 ng ng ng ng
__________________________________________________________________________________________________
------------------------------------------------------------------------------------
Probability of occurrence of annual low discharges
[ng, statistic not given]
____________________________________________________________________________________
Minimum mean 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 0 0 0 0 0 0
0.10 10 ng ng ng 0 0 0 0 0 0
0.20 5 ng ng ng 0 0 0 0 0 0.039
0.50 2 ng ng ng 0 0 0 0 0.072 0.175
____________________________________________________________________________________
-------------------------------------------------------------------------------------
Probability of occurrence of seasonal low discharges
_____________________________________________________________________________________
Minimum mean 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 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 0.100
0.50 2 0 0 0 0 0 0 0.041 0.598
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 0.042 0 0 0 0.153
_____________________________________________________________________________________
-------------------------------------------------------------------------------------
Annual peak discharge and corresponding gage height
[--, 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
1954 June 21 3.63 64.0 1970 April 25 7.45 603
1955 April 1 6.88 392 1971 April 9 5.63 337
1956 April 26 5.96 340 1972 March 16 4.85 230
1957 September 2 3.83 146 1973 March 24 2.69 36.0
1958 July 4 2.43 27.0 1974 April 13 8.10 220
1959 April 2 5.63 160 1975 April 28 2.85 49.0
1960 April 11 7.42 570 1976 June 12 3.88 188
1961 March 21 3.28 30.0 1977 May 29 4.93 267
1962 August 10 6.22 422 1978 April 6 4.97 380
1963 June 3 4.94 218 1979 April 19 9.51 734
1964 June 18 9.18 1,300 1980 April 3 3.38 74.0
1965 April 10 8.22 927 1981 March 27 3.28 62.0
1966 May 4 6.26 329 1982 May 18 3.80 165
1967 May 6 3.96 205 1983 March 30 -- 215
1968 May 15 3.01 126 1984 March 26 3.04 22.0
1969 April 9 7.80 528
Annual peak discharge, from highest to lowest, and corresponding gage height
1964 June 18 -- 1,300 1983 March 30 -- 215
1965 April 10 8.22 927 1967 May 6 3.96 205
1979 April 19 9.51 734 1976 June 12 3.88 188
1970 April 25 7.45 603 1982 May 18 3.80 165
1960 April 11 7.42 570 1959 April 2 5.63 160
1969 April 9 7.80 528 1957 September 2 3.83 146
1962 August 10 6.22 422 1968 May 15 3.01 126
1955 April 1 6.88 392 1980 April 3 3.38 74.0
1978 April 6 4.97 380 1954 June 21 3.63 64.0
1956 April 26 5.96 340 1981 March 27 3.28 62.0
1971 April 9 5.63 337 1975 April 28 2.85 49.0
1966 May 4 6.26 329 1973 March 24 2.69 36.0
1977 May 29 4.93 267 1961 March 21 3.28 30.0
1972 March 16 4.85 230 1958 July 4 2.43 27.0
1974 April 13 8.10 220 1984 March 26 3.04 22.0
1963 June 3 4.94 218
_____________________________________________________________________________________
---------------------------------------------------------------------------------------------------------------------------------
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
__________________________________________________________________________________________________________________________________
1954 -- -- -- -- -- -- -- -- -- 0.568 0.065 0.257 --
1955 0.445 0.397 0.139 0 0.004 5.89 21.3 1.86 1.52 0.281 0 0 2.64
1956 0.348 0.140 0.187 0.226 0.262 0.106 32.7 16.8 3.37 1.46 0.810 0.857 4.75
1957 0.671 1.04 0.235 0.052 0 6.54 2.07 2.35 1.55 0.458 0.058 2.86 1.50
1958 0.616 0.573 0.384 0 0.079 0.465 1.19 0.526 0.347 0.816 0 0 0.418
1959 0 0.013 0 0 0 1.26 14.5 2.60 0.527 0.052 0 0 1.57
1960 0 0 0 0 0 0.677 32.2 2.39 0.623 0.019 0 0 2.95
1961 0 0 0 0 0 2.45 0.940 0.294 0.013 0 0 0 0.311
1962 0 0 0 0 0 0.006 28.5 9.55 8.37 1.09 2.10 0.273 4.14
1963 0.600 0.610 0.145 0 0 2.57 1.74 1.75 8.64 1.98 0.035 0 1.50
1964 0.116 0.280 0.165 0.100 0.100 0.100 11.1 3.46 25.5 2.51 0.242 1.62 3.74
1965 1.15 0.750 0.526 0.684 0.354 0.316 42.9 10.3 5.96 1.27 0.706 2.09 5.54
1966 1.63 1.15 1.10 0.586 0.629 6.02 18.0 16.9 2.94 3.20 1.54 0.457 4.53
1967 0.844 0.528 0.486 0.514 0.406 5.62 15.5 17.1 1.99 0.428 0.047 0.093 3.65
1968 0.384 0.593 0.076 0 0 5.78 3.41 4.58 1.10 0.744 0.714 0.523 1.50
1969 0.501 0.473 0.039 0 0 0 36.6 1.90 0.998 0.405 0.027 0 3.38
1970 0.234 0.279 0.079 0 0.002 0.027 27.4 10.1 2.29 0.670 0.020 0.046 3.41
1971 0.218 0.262 0.009 0 0 0.195 26.8 1.73 7.02 3.08 0.189 0.252 3.29
1972 0.441 0.619 0.049 0 0 13.5 14.5 2.26 0.280 0.162 0.052 0.019 2.66
1973 0.152 0.175 0 0 0 8.30 1.18 0.936 0.563 0.030 0.014 0.159 0.972
1974 1.05 0.228 0.071 0.010 0.005 0 45.2 21.0 3.22 0.663 0.385 0.332 6.00
1975 0.461 0.435 0.137 0.060 0.045 0.354 11.5 3.98 1.16 0.102 0 0 1.51
1976 0.095 0.122 0.003 0 0.121 0.516 14.0 0.770 3.35 0.073 0 0 1.56
1977 0 0.006 0 0 0 0.873 2.50 2.24 0.304 0.847 0.002 1.50 0.690
1978 0.895 0.267 0.323 0.245 0.200 1.63 31.0 7.62 1.10 0.475 0 0.031 3.63
1979 0.165 0.096 0 0 0 0 55.6 11.0 1.97 0.559 2.05 1.09 5.99
1980 0.557 0.529 0.122 0 0 0.717 11.1 0.760 0.347 0.254 3.37 5.39 1.92
1981 4.20 2.10 0.459 0.331 1.68 6.19 4.44 4.36 3.91 0.657 1.26 0.665 2.53
1982 3.54 0.921 0.339 0 0 6.36 6.49 8.02 2.95 1.52 0.505 0.346 2.60
1983 0.670 0.723 2.54 0.428 1.69 19.8 14.7 2.93 1.15 0.299 0 0.193 3.77
1984 0.335 0.367 0.055 0 0.027 3.46 4.69 1.04 0.475 0.161 0 0 0.883
__________________________________________________________________________________________________________________________________
|
U.S. Department of the Interior ||
U.S. Geological Survey Maintainer: Webmaster Last update: Wednesday, 23-Feb-2005 09:46:03 EST Privacy || Disclaimer|| Accessibility || FOIA URL: http://nd.water.usgs.gov/pubs/ofr/ofr9821/htdocs/l.05089500.html |
|