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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 11530000 TRINITY R A HOOPA CA


Humboldt County, California
Hydrologic Unit Code 18010211
Latitude  41°03'00", Longitude 123°40'21" NAD27
Drainage area 2,853  square miles
Gage datum 274.82 feet above NGVD29
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00060, Discharge, cubic feet per second,
YEAR Monthly mean in ft3/s   (Calculation Period: 1911-10-01 -> 2016-02-29)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1911 521.4733.6720.9
1912 7,7558,7186,2945,97913,8106,6921,993835.01,248835.75,6335,537
1913 7,5618,3756,80210,6509,2094,6251,865822.7544.0
1916 498.51,1121,858
1917 1,6568,6048,5908,60010,0005,3001,447535.4418.3558.71,2893,027
1918 3,0055,6947,9327,1413,3761,524466.0305.4600.0
1931 462.71,1803,305
1932 5,2294,33010,0907,0457,8253,408972.8358.7221.6259.6656.01,386
1933 2,1092,92811,3009,4498,1266,9571,854555.0386.6367.0542.02,961
1934 6,3844,8166,2564,9843,0001,379508.3249.0213.3585.55,1193,671
1935 6,3658,0456,72013,8408,2673,0391,001411.0344.2562.2789.51,754
1936 17,16011,9008,1857,7825,9463,7911,396507.7358.9323.9387.6530.5
1937 646.92,4339,56714,69010,7405,7011,577501.7328.0756.19,58913,810
1938 9,22219,39026,37019,32016,7007,8132,304848.8552.8945.11,9474,659
1939 2,7044,7039,3385,8163,1591,494594.0266.8236.7347.9373.34,055
1940 12,74022,50020,99012,7406,6853,179970.3453.3513.6823.21,47812,800
1941 17,56017,36016,76015,20013,9108,8824,2651,364916.6757.11,46515,740
1942 12,38019,7205,2888,18910,2307,4592,425909.2608.9591.23,78711,130
1943 15,13012,2209,5439,7156,0373,5881,488698.9471.0877.71,4841,285
1944 2,9004,7835,7544,7905,8783,2911,159510.6361.8385.43,7545,842
1945 5,52315,8906,8008,8878,0223,7561,264521.6387.0961.06,19219,100
1946 13,7906,3868,9339,1768,3353,6901,526588.9406.9526.12,3962,656
1947 1,4556,1038,8636,4093,4922,758776.5426.8337.71,8931,5851,235
1948 9,2013,6904,67513,65010,3707,4092,098790.4646.3818.41,4103,685
1949 2,1215,42115,57011,4508,1403,3331,014513.8392.5481.7816.6899.5
1950 5,4468,45313,14010,4907,6693,4981,157488.6424.45,4057,14617,860
1951 13,82020,9107,8618,1317,4792,9781,070574.3467.3969.23,26115,060
1952 9,33222,43012,88017,64013,6106,7313,0241,031591.3516.2740.06,501
1953 29,17010,4508,30110,88011,3409,8754,0751,365839.1907.95,0145,284
1954 14,42019,13014,07014,5508,0993,6371,578829.9737.9695.42,8884,828
1955 4,7614,4443,8154,9267,9123,3281,037452.0398.8453.12,52628,060
1956 30,14014,63011,18010,62010,2605,9642,163869.6556.01,0301,6551,834
1957 2,4469,67215,1808,4479,9914,5751,525593.2583.64,3036,37110,300
1958 17,03050,38014,64018,12015,4908,8303,0871,231685.0561.81,2371,345
1959 13,78012,5109,3798,8555,0552,825964.5488.5598.9565.2528.8713.2
1960 1,95813,53012,1007,3077,7105,6051,310552.4391.5467.61,7975,408
1961 2,67211,24010,0106,0904,1672,528992.2586.9491.3627.31,3684,105
1962 2,3178,8736,8236,2972,9701,777840.5713.2476.94,1263,1307,078
1963 2,11213,1306,06521,27011,1304,1701,217687.5522.61,0206,2693,192
1964 9,5837,2004,1603,4272,3831,647779.5460.1408.3475.72,27429,710
1965 17,1807,1032,8145,9983,3941,754970.1662.1491.4560.12,1212,452
1966 10,8205,69710,3008,2114,0061,709862.0471.7486.8484.82,3498,895
1967 9,1307,7646,3185,4267,3534,3651,434673.2398.7745.5920.22,406
1968 7,88114,1403,8272,4841,971988.1508.1491.7499.9709.02,1096,094
1969 18,65012,39010,85011,3107,4423,3721,249500.6336.2738.7949.510,380
1970 32,0909,6916,2933,3742,7381,502727.5460.3449.3607.67,54014,260
1971 19,7406,68914,6609,2836,1303,0761,506750.9669.8787.82,5964,645
1972 10,4308,89619,0105,5943,0871,908897.8550.8565.4798.01,9896,566
1973 10,8508,7667,2145,7333,6601,615768.8486.8604.51,52012,90018,770
1974 26,3107,75614,29014,7505,9673,3371,395726.3542.4580.8840.22,335
1975 5,17813,30020,1209,2428,7714,6431,526759.4638.11,4882,9843,575
1976 2,8885,6645,8044,1572,7511,312731.3705.3516.0552.9681.3529.0
1977 745.1890.81,6081,3251,204746.1338.0270.5562.2644.03,0629,087
1978 18,61011,63010,2706,9014,1242,3771,456730.8912.0691.8796.4993.4
1979 2,7264,5797,0223,8384,4691,592871.0644.0662.61,8055,7644,379
1980 15,80012,89010,3505,5613,2172,0051,314778.1647.6697.8912.63,437
1981 4,4868,1316,2314,1722,4351,554856.6671.8607.61,1148,17020,050
1982 9,11716,4909,92614,3706,4173,1871,7881,078863.41,2723,58714,060
1983 15,83026,98032,24016,04012,0208,9993,2331,6811,309972.69,81123,700
1984 10,1607,8568,5785,9274,9562,4601,419981.1736.71,00911,0806,472
1985 2,8894,7883,2305,7092,3021,523894.3748.5665.4803.31,1053,030
1986 6,43528,81016,2904,1083,0151,8161,235814.2950.1873.81,0831,682
1987 4,0047,49410,1204,5322,7061,448920.2558.5444.9471.8685.08,437
1988 7,7434,4902,7052,2272,4392,325881.5533.8483.5529.04,7062,733
1989 5,4584,83916,3208,0224,4831,9151,132745.3744.31,2951,1621,145
1990 4,6213,7955,2942,4813,3683,8131,116657.1571.2569.2678.7787.7
1991 1,2712,0145,0773,9172,4451,697930.4594.8567.3578.4858.31,071
1992 1,5085,0404,2644,7262,0902,252809.9658.5699.1716.11,0842,767
1993 10,99010,45014,13010,0606,4646,0672,0281,148820.1733.6716.61,786
1994 3,4424,1613,8292,9272,6771,089757.5641.4592.6526.91,2713,070
1995 23,90013,51024,90012,67010,6003,9102,1151,216934.8755.3769.47,888
1996 12,47020,78012,0507,2256,6262,9441,505920.6810.8900.32,44918,650
1997 27,86010,1504,7903,3873,7812,1631,208839.5801.1923.02,3393,976
1998 20,89027,69020,41012,0408,5429,7313,1921,327982.2893.94,8417,463
1999 7,80414,74013,0509,2426,8653,6551,6571,003852.8784.41,4952,353
2000 7,60013,66011,5705,5194,4062,6901,340831.9786.7812.2911.91,337
2001 1,4182,8375,0042,9683,3671,569831.2716.9633.1610.62,1798,909
2002 13,0908,0065,4764,2615,1661,972923.7696.4631.0573.11,13312,000
2003 15,8906,0947,1798,7179,8494,4772,0701,1511,159660.3940.46,609
2004 9,06215,5409,2594,7305,9673,7121,7161,0051,003955.5828.23,939
2005 5,5634,7947,4487,98913,1605,7052,6571,056846.3807.11,81718,510
2006 23,53015,92012,73015,22013,0908,3232,603991.7831.5769.62,0496,729
2007 4,2955,8048,1233,9825,1541,840966.8802.3684.21,3341,1372,953
2008 7,2298,5907,0674,7807,9013,6831,763779.5709.6795.01,5572,261
2009 3,9865,2908,0733,6706,9762,407956.7884.4649.1844.51,0341,941
2010 7,3889,1137,2969,88610,8007,3462,7591,064886.61,7252,67910,870
2011 7,9244,71114,69012,17011,0506,4953,2501,309891.31,1511,3011,197
2012 5,0063,34710,10012,3507,7673,7981,6891,041950.8685.21,5518,623
2013 5,1883,7453,7194,1254,1781,609822.7846.81,037820.9678.3720.7
2014 764.73,1535,8573,2382,4791,209687.8759.51,342995.61,5717,795
2015 2,83310,5402,4441,8683,6151,220652.3923.71,156545.3618.76,516
2016 16,9308,275
Mean of
monthly
Discharge
9,540 10,300 9,780 8,120 6,660 3,680 1,450 741 640 904 2,570 6,670

** Incomplete data have been used for statistical calculation