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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.

    USGS 11103000 LOS ANGELES R A LONG BEACH CA


    Los Angeles County, California
    Hydrologic Unit Code 18070105
    Latitude  33°49'02", Longitude 118°12'20" NAD27
    Drainage area 827  square miles
    Gage datum 11.91 feet above NGVD29
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    00060, Discharge, cubic feet per second,
    YEAR Monthly mean in ft3/s   (Calculation Period: 1929-10-01 -> 1992-09-30)
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    1929 3.301.943.84
    1930 71.57.0190.84.0010.12.201.961.842.433.5910.48.11
    1931 39.7116.75.2147.05.192.633.043.152.951.8516.8141.2
    1932 27.7658.45.523.203.373.503.883.742.903.453.807.62
    1933 315.26.716.246.084.384.323.883.684.053.884.78248.4
    1934 766.063.77.511.171.923.842.603.344.3544.453.7106.5
    1935 143.661.6102.0131.57.294.334.845.624.855.129.905.37
    1936 6.25220.851.124.55.455.214.834.845.3216.06.64217.5
    1937 80.3851.6350.817.06.764.364.195.534.265.037.8098.6
    1938 69.5491.24,942977.349.720.09.8918.029.638.137.2439.0
    1939 246.9125.4140.448.324.313.36.875.89243.524.127.744.8
    1940 237.2409.098.4122.739.427.027.227.720.066.429.7425.5
    1941 218.01,8272,259825.4239.6121.480.566.058.9119.989.5367.4
    1942 149.5177.1168.0174.973.672.649.149.557.385.5113.5131.5
    1943 1,763619.91,274188.466.941.640.938.043.649.559.1376.6
    1944 150.81,558785.8243.9146.198.167.459.456.875.4330.3164.3
    1945 122.8430.1283.669.451.649.738.134.037.842.753.9478.2
    1946 171.3136.7256.5164.854.448.342.435.531.359.2589.0514.8
    1947 124.7166.0112.645.133.729.231.027.128.927.324.3105.4
    1948 62.0131.2225.0157.636.229.725.521.829.223.918.7152.0
    1949 158.190.096.239.750.733.128.320.023.015.872.7145.0
    1950 151.9137.553.550.315.714.615.114.018.410.935.710.7
    1951 196.9101.550.2121.831.415.113.412.111.820.546.8347.7
    1952 1,85045.7891.1164.330.521.516.017.18.847.08212.1261.3
    1953 122.129.131.141.46.866.218.125.663.565.1160.412.9
    1954 396.9384.0271.718.421.15.586.104.514.934.3172.461.2
    1955 409.065.650.2126.2137.89.9618.417.518.815.8102.255.8
    1956 987.968.129.6234.750.012.910.811.810.912.610.321.9
    1957 329.7138.7110.091.847.911.612.212.810.698.842.9304.4
    1958 149.11,024546.0979.019.816.819.130.517.819.114.915.6
    1959 231.3415.117.752.016.116.517.318.015.515.712.789.6
    1960 264.0188.934.0140.113.814.114.414.814.513.9225.216.8
    1961 118.614.338.423.812.415.915.324.212.22.64194.9146.9
    1962 218.52,373106.319.916.610.611.511.312.312.712.413.1
    1963 27.1389.2228.4121.411.220.715.615.466.948.9234.69.47
    1964 168.411.9133.383.113.729.914.017.412.724.5116.2153.5
    1965 47.832.8123.0654.113.512.114.720.664.211.42,3331,070
    1966 371.9166.248.517.226.616.516.916.532.216.4478.3644.1
    1967 792.446.2251.5410.636.333.528.229.764.825.5885.6196.5
    1968 95.691.7541.681.033.828.829.843.026.751.344.399.0
    1969 5,1816,419888.5232.664.884.298.346.541.636.2180.736.3
    1970 195.3443.5447.138.034.136.736.036.228.435.2874.7732.2
    1971 117.0166.8154.290.552.240.843.227.732.165.948.5809.9
    1972 43.245.835.331.832.642.332.448.832.846.5361.4192.6
    1973 531.11,422353.545.438.340.844.438.331.630.7193.395.3
    1974 1,18734.0507.348.736.135.632.727.524.974.733.8517.6
    1975 26.9399.9534.4174.432.230.627.532.432.243.622.036.8
    1976 18.5455.8137.590.629.540.121.623.5307.386.796.285.4
    1977 444.037.8199.316.1381.322.020.7263.69.1113.818.8697.0
    1978 1,3482,9335,208595.2126.636.542.034.6126.554.7928.8210.6
    1979 1,267549.21,013139.6115.080.670.065.962.7143.9103.8106.3
    1980 1,4746,7491,570161.0110.556.550.867.864.356.045.8155.0
    1981 404.3236.4746.091.484.881.950.252.851.388.4346.696.9
    1982 388.6138.9915.1580.4105.075.262.143.6106.865.6905.3272.9
    1983 1,3911,3266,1881,197668.887.964.4186.4219.7
    1988 109.5164.4550.6
    1989 178.2337.1198.2137.3127.1127.6129.8136.4152.5159.9154.7132.4
    1990 262.3612.2144.3194.7196.5135.2131.6133.5124.3125.1270.9128.7
    1991 343.8731.91,343147.6128.4127.0138.1124.7133.5158.7136.6695.2
    1992 603.93,5841,729344.9208.0167.6206.0163.6145.0
    Mean of
    monthly
    Discharge
    470 698 640 191 70 39 36 40 49 44 200 229

    ** No Incomplete data have been used for statistical calculation