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Statistics of monthly and annual mean discharges
[m, more than 1 year of occurrence; ng, statistics not given]
__________________________________________________________________________________________________________
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 0.032 1947 0 m 0 0.01 3.46 0
November 0.007 1944 0 m 0 0 3.46 0
December 0 m 0 m 0 0 ng 0
January 0 m 0 m 0 0 ng 0
February 0 m 0 m 0 0 ng 0
March 82.6 1946 0 m 13.8 23.7 1.72 12.9
April 252 1952 0.103 1953 55.9 82.8 1.48 52.4
May 74.4 1950 0 1949 11.9 20.5 1.73 11.2
June 66.7 1944 0 m 13.6 20.9 1.53 12.8
July 49.1 1955 0 m 11.0 17.5 1.59 10.3
August 3.88 1955 0 m 0.420 1.12 2.70 0.39
September 0.367 1955 0 m 0.030 0.10 3.35 0.03
Annual 22.5 1952 0.918 1953 8.60 7.01 0.81 100
__________________________________________________________________________________________________________
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Monthly and annual flow duration, in cubic feet per second
[ng, statistic not given]
______________________________________________________________________________________________________________________
Percentage
of days
discharge Jan. Feb. March April May June July Aug. Sept. Oct. Nov. Dec. Annual
equaled or
exceeded
______________________________________________________________________________________________________________________
95 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
90 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
85 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
80 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
75 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
70 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
65 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
60 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
55 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
50 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
45 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
40 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
35 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
30 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
25 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
20 ng ng ng ng ng ng ng ng ng ng ng ng 0.05
15 ng ng ng ng ng ng ng ng ng ng ng ng 2.00
10 ng ng ng ng ng ng ng ng ng ng ng ng 12.1
5 ng ng ng ng ng ng ng ng ng ng ng ng 36.6
______________________________________________________________________________________________________________________
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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 19.9 11.9 7.49 3.18
0.95 1.05 ng 48.6 29.9 17.7 8.90
0.90 1.11 140 74.6 46.7 27.1 14.7
0.80 1.25 189 120 77.1 44.2 25.6
0.50 2 326 259 179 103 65.1
0.20 5 543 478 358 217 140
0.10 10 700 620 487 306 197
0.04 25 908 786 651 430 270
0.02 50 1,070 898 770 527 324
0.01 100 1,230 998 884 627 376
0.005 200 1,400 1,090 993 728 426
0.002 500 1,630 ng ng ng ng
__________________________________________________________________________________________________
------------------------------------------------------------------------------------
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 ng ng
0.10 10 ng ng ng ng ng ng ng ng ng
0.20 5 ng ng ng ng ng ng ng ng ng
0.50 2 ng ng ng ng ng ng ng ng ng
____________________________________________________________________________________
-------------------------------------------------------------------------------------
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 ng ng 0
0.10 10 ng ng ng ng ng ng ng 0
0.20 5 ng ng ng ng ng ng ng 0
0.50 2 ng ng ng ng ng ng ng 0
June-July-August September-October-November
________________________ _______________________
0.05 20 ng ng ng ng ng ng ng ng
0.10 10 ng ng ng ng ng ng ng ng
0.20 5 ng ng ng ng ng ng ng ng
0.50 2 ng ng ng ng ng ng ng ng
_____________________________________________________________________________________
-------------------------------------------------------------------------------------
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
1944 June 4 8.92 318 1950 May 9 9.31 374
1945 March 16 6.68 165 1951 April 7 -- 500
1946 March 20 11.00 512 1952 April 9 13.73 997
1947 April 12 -- 600 1953 June 27 4.86 47.0
1948 April 7 6.62 132 1954 June 8 7.91 207
1949 July 10 9.87 292 1955 July 13 5.12 318
Annual peak discharge, from highest to lowest, and corresponding gage height
1952 April 9 13.73 997 1955 July 13 5.12 318
1947 April 12 -- 600 1949 July 10 9.87 292
1946 March 20 11.00 512 1954 June 8 7.91 207
1951 April 7 -- 500 1945 March 16 6.68 165
1950 May 9 9.31 374 1948 April 7 6.62 132
1944 June 4 8.92 318 1953 June 27 4.86 47.0
_____________________________________________________________________________________
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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
__________________________________________________________________________________________________________________________________
1943 -- -- -- -- -- -- -- 10.9 48.9 13.0 1.53 0.027 --
1944 0 0.007 0 0 0 0.703 4.00 14.9 66.7 3.90 0 0 7.44
1945 0 0 0 0 0 29.3 5.48 0.119 2.91 0 0 0 3.19
1946 0 0 0 0 0 82.6 16.0 0.035 0.010 3.96 0 0 8.67
1947 0.032 0 0 0 0 16.3 176.8 25.8 13.6 0 0 0 19.2
1948 0 0 0 0 0 0 43.1 3.19 0 0 0 0 3.81
1949 0 0 0 0 0 8.82 1.41 0 0 45.3 0 0 4.71
1950 0 0 0 0 0 19.9 59.4 74.4 4.32 23.6 0 0 15.3
1951 0 0 0 0 0 0 110.9 7.53 1.91 0.103 0 0 9.92
1952 0 0 0 0 0 0 252.4 17.0 0.843 3.99 0 0 22.5
1953 0 0 0 0 0 6.70 0.103 0.029 4.03 0.077 0 0 0.918
1954 0 0 0 0 0 0 0.520 0.023 13.9 0 0 0 1.18
1955 0 0 0 0 0 1.10 0.443 0.745 20.2 49.1 3.88 0.367 6.39
__________________________________________________________________________________________________________________________________
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