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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 11517500 SHASTA R NR YREKA CA


Siskiyou County, California
Hydrologic Unit Code 18010207
Latitude  41°49'23", Longitude 122°35'40" NAD27
Drainage area 793  square miles
Gage datum 2,000.00 feet above NGVD29
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00060, Discharge, cubic feet per second,
YEAR Monthly mean in ft3/s   (Calculation Period: 1933-10-01 -> 2022-06-30)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1933 111.5130.7134.1
1934 144.6133.398.936.438.935.918.313.841.5109.8133.7143.7
1935 168.2178.7134111.83019.91314.442.3108.4122.6128.8
1936 305.8203.6188.389.14748.815.314.139.5100.8116.7120.4
1937 110.1170.6187.5186.244.471.716.113.642.4122.7175.9330.6
1938 291.7589.3620.9554.1335143.8115.696.2104150.9170.7181
1939 178.7178.2200.170.239.118.417.18.3562.8116.2121.4211.8
1940 234380.8503448.1104.573.65859.8111.4148159.9278.5
1941 233510.3537.9710.9363.5208.4115.3110.6136.3184.5222.8425.2
1945 171.2260.4187.6126150102.830.931.666.7143184.6249.9
1946 340.7240.8254.5167.266.680.348.443.776.7142.2189.3179.7
1947 179.1200.4157.579.43077.122.529.255.7146.6171.6154.4
1948 264.8167.2177.6164.9176.9154.637.460.4112.6172.5209.4246.9
1949 183.1244.9200.510092.266.420.126.788.6151.1158.1158.5
1950 235.6224.4210.8128.547.261.318.320.274.4192.2215.9383.3
1951 426.7634.2240.4128.6108.532.616.222.261.3152.8177.2340.5
1952 310.2653.4359.6254.5151.2146.859.350.579.4145.5184.3338.6
1953 712.4403326.1172.9268.8283.646.348.682.6178.7235240.4
1954 397.6533.5404.7210.680.1132.123.644.581.8154.3182185.8
1955 189.7180.7129.367.153.817.912.711.349.8124.5186.2777.5
1956 749.6553.6481.9249.4212.5150.771.461.6112.3179.8204.4218.9
1957 218.4360.7487.9210.6106.859.120.835.6102.5213.5258.4351.3
1958 487.81,002590.4525.3245.5296.4117.373.1120.5165.7201.3208
1959 247.7312.4206.2104.3124.855.720.432.584.9139.2172.5169.1
1960 171.7325.4221.2123.992.735.510.116.132.6118.3183263.7
1961 170.5304.5231.7122.2107.696.417.234.6105.2153.3219.6282.4
1962 225.5319.8239.498.5133.253.822.831.462.9350.6236.8388.5
1963 227.5539260.5291.9239.8131.878.449.8103.7192.2228.3221
1964 407.6255.3223.5118.4101.9126.831.419.754.4136.3191.21,223
1965 783.5395.8224.1360.1119.898.766.481.791.5161.8236.9261.9
1966 375.4216.4219.8113.765.963.21513.962.2124.5200.4282.1
1967 297.5238.4271.3221.6230.7162.238.428.672.3180.5191.3221.2
1968 262.9317.3210.364.364.349.712.137.857.4146.9183.6222.3
1969 503.4336254.3224.1122.6126.772.53480.7184.6197.4402.5
1970 981.9495.5399.3152.8135.383.235.723.159.1165.3283.5439.5
1971 471.2320.1453.6315.4359201.866.634.584.8190214.6243.5
1972 394.1329.4575.475.7105.67927.332.580.9151.8186.2223
1973 228.6213178.275.765.428.119.91655.4163.3313.9357.2
1974 1,179401.2651752.8213.912876.558.271.7157.2200.7190.7
1975 245.2393.5738.1398.7297.1159.882.554.275.2171.9192.9226
1976 225.4251.4258.413086.849.321.8110.472.7136.3175.3162
1977 162.4166.497.773.585.544.319.117.330.9116.7154.9306
1978 436.3298.7343.7351.1132.8100.577.670.8182.3148.6185.8203.3
1979 207.9201.9210.4133.2133.531.521.730.870.6141.5233221.1
1980 524.8394289.6180.4107.9121.836.529.262.3146.2182.2205.8
1981 186.3222.8189.3120.87935.713.79.5126.7135.2289.3588.4
1982 334.4670.6587376.2127.9135.8136.547.396.1178.4212.3371.1
1983 382.5671.5946.3417307.7294.4105.391.4116.7195.1308.9656.6
1984 472340.7330.7269.2169.39744.636.587.5188.8360.7279.3
1985 231.3292.3225.1121.972.569.618.324.9115.2151.4180.7180.2
1986 239.9639.5367.6168.9144.974.440.635.6102.6166.1204.6203.6
1987 224.9233.3190.461.446.544.735.42357.1131174.7219
1988 213.2190.1130.686.965.489.923.127.935.990.7185.7171.6
1989 193.8175.3348.2210.1133.666.927.236.7103.7154.9165.6162.2
1990 208.7183.6236.983.293.974.62822.541.3108.3159.2153.8
1991 152.9170.4153.454.3123.444.834.72231.293.9151.1157.2
1992 160.1158.3126.331.824.527.325.712.834.6103.2139.6159.5
1993 262.7196276.7190.575.4166.140.245.955.1144.8160.5171.2
1994 174.1179.4142.551.278.229.616.914.130103.5144.1136.2
1995 257237.5486.1330.8261.1162.1146.654.862.9141.1164.2346.3
1996 497.1642.3369.2239.1167.890.274.13578145.9200.9464.3
1997 1,234422.1279.1143104.685.166.946.486.4159.3179.2189.5
1998 424.4521.2666.3423.4677.5563.7136.377.5100.7185.5331.2358
1999 444.2606.4469.7316.9227.113957.857.479.2151.9196206.1
2000 337312.6365.3204.4149.496.960.527.964.7156.5178176.6
2001 177.9174.6170.5101.943.825.723.619.447128.9186.2234.8
2002 236.8215.1170.298105.944.324.223.931.8132.3157.2358.5
2003 366.7289.3305.7245.2194.888.962.26882.1150.1178193
2004 226333.9296.1130.4108.762.437.843.569170.4188.8268
2005 231.4219.3199.8123215.794.134.135.663.3144.7226.2775.1
2006 968.8629.1443.7418288.2152.486.881.296.7174.5206.4244.5
2007 236.3318.5319.6160.71096040.527.248.8149175.6192
2008 257.7258.9225125.194.975.220.625.532.6118.7151.1162.1
2009 170.1172173.269.266.670.718.618.523109.4135.5142.3
2010 171.6158159.1146.7106.575.222.125.861.5141.4172256.3
2011 237.2214.3506.4379.8224.219387.456.979.4169.7181.2173.7
2012 204.2197.6228.2229.284.248.525.429.752.3124.6149.2225.5
2013 182.1185171.5102.555.125.217.127.234.7119131.8138.8
2014 144.9165.4167.364.830.721.813.215.844.9119.7137.3198.1
2015 161.1510.9178.988.681.542.128.827.839.6112.4133179.1
2016 290.4271386179.213972.132.43557.3159.7198.2284.4
2017 483758.3477.1396.4248.3131.145.463.388.4157186.3183.4
2018 187.2178.9191.213811156.824.338.541.1120.1139.2163.7
2019 176298.7270.9214.7122.2102.841.741.473.6145.4149.9168.8
2020 187169.216348.856.334.614.516.722.695126.9140.3
2021 148.1154.7149.754.326.317.715.918.947.4121.7149.9163
2022 162.7153.9127.670.449.251
Mean of
monthly
Discharge
320 327 300 195 135 96 43 38 70 148 189 266

** No Incomplete data have been used for statistical calculation