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USGS Surface-Water Monthly Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.


Tuolumne County, California
Hydrologic Unit Code 18040009
Latitude  37°58'53", Longitude 120°12'20" NAD27
Drainage area 69.2  square miles
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00060, Discharge, cubic feet per second,
YEAR Monthly mean in ft3/s   (Calculation Period: 1958-10-01 -> 1966-08-31)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1958 10.313.315.5
1959 49.3147.581.557.728.
1960 21.3100.699.173.753.311.44.252.642.564.3312.218.9
1961 10.125.338.
1962 9.82250.8126.5246.085.526.77.944.313.927.856.7611.8
1963 73.4187.883.8316.9231.359.122.411.68.3811.253.624.9
1964 32.444.557.596.671.629.710.14.293.914.5630.7346.5
1965 322.1158.0109.3236.1119.239.817.311.59.548.8693.149.4
1966 53.765.9114.989.228.914.07.093.12
Mean of
72 123 89 144 81 25 9.5 5.2 5.6 7.0 28 61

** No Incomplete data have been used for statistical calculation