Water Year
Seasonal (Apr-Jul)
Rank Year Annual Flow 3-Year Mean
1949 -662688000000 5601.1
1950 -631152000000 5289.7
1951 -599616000000 8642.9
6511.2
1952 -568080000000 11054.6
8329.1
1953 -536457600000 9262.8
9653.4
1954 -504921600000 8859.2
9725.5
1955 -473385600000 5275.8
7799.3
1956 -441849600000 12845.6
8993.6
1957 -410227200000 6745.2
8288.9
1958 -378691200000 14704.6
11431.8
1959 -347155200000 6318.3
9256.0
1960 -315619200000 6042.6
9021.9
1961 -283996800000 6754.4
6371.8
1962 -252460800000 7043.6
6613.6
1963 -220924800000 9787.3
7861.8
1964 -189388800000 6051.9
7627.6
1965 -157766400000
1966 -126230400000 7267.7
1967 -94694400000 10543.8
1968 -63158400000 6896.6
8236.1
1969 -31536000000 11833.4
9757.9
1970 0000 11710.4
10146.8
1971 31536000000 10770.2
11438.0
1972 63072000000 6587.3
9689.3
1973 94694400000 9635.6
8997.7
1974 126230400000 15869.5
10697.5
1975 157766400000 9370.8
11625.3
1976 189302400000 4842.5
10027.6
1977 220924800000 3398.9
5870.7
1978 252460800000 12011.1
6750.8
1979 283996800000 5753.3
7054.4
1980 315532800000 9658.9
9141.1
1981 347155200000 6204.1
7205.4
1982 378691200000 13359.1
9740.7
1983 410227200000 17619.6
12394.3
1984 441763200000 9717.6
13565.4
1985 473385600000 5604.0
10980.4
1986 504921600000 11143.2
8821.6
1987 536457600000 5436.5
7394.6
1988 567993600000 5893.6
7491.1
1989 599616000000 6670.3
6000.1
1990 631152000000 5293.6
5952.5
1991 662688000000 4068.1
5344.0
1992 694224000000 5218.5
4860.1
1993 725846400000 10279.1
6521.9
1994 757382400000 4346.8
6614.8
1995 788918400000 15158.3
9928.1
1996 820454400000 9696.2
9733.8
1997 852076800000 10382.9
11745.8
1998 883612800000 16250.3
12109.8
1999 915148800000 10012.1
12215.1
2000 946684800000 9531.7
11931.4
2001 978307200000 5677.4
8407.1
2002 1009843200000 7784.2
7664.4
2003 1041379200000 9980.0
7813.8
2004 1072915200000 8981.8
8915.3
2005 1104537600000 8572.3
9178.0
2006 1136073600000 14248.9
10601.0
2007 1167609600000 5268.2
9363.1
2008 1199145600000 5643.3
8386.8
2009 1230768000000 6175.5
5695.7
2010 1262304000000 8452.8
6757.2
2011 1293840000000 9974.9
8201.1
2012 1325376000000 5666.9
8031.5
2013 1356998400000 5824.8
7155.5
2014 1388534400000 3896.8
5129.5
2015 1420070400000 5529.5
5083.7
2016 1451606400000 8190.9
5872.4
2017 1483228800000 14837.7
9519.4
2018 1514764800000 5027.2
9351.9
2019 1546300800000 11293.2
10386.0
2020 1577836800000 4780.5
7033.6
2021 1609459200000 3618.8
6564.2
2022 1640995200000 4318.8
4239.4
2023 1672531200000 9090.4
5676.0
2024 1704067200000 8485.5
7298.2
2025 1735689600000 9774.6
9116.8
2026 1767225600000
9453.3
9237.8
Rank Year Seasonal Flow 3-Year Mean
1949 -662688000000 1687.9
1950 -631152000000 1661.7
1951 -599616000000 1668.6
1672.8
1952 -568080000000 3395.0
2241.8
1953 -536457600000 2639.4
2567.7
1954 -504921600000 2576.9
2870.4
1955 -473385600000 1836.7
2351.0
1956 -441849600000 2606.2
2339.9
1957 -410227200000 2294.8
2245.9
1958 -378691200000 4033.5
2978.2
1959 -347155200000 1464.2
2597.5
1960 -315619200000 1645.3
2381.0
1961 -283996800000 1756.6
1622.0
1962 -252460800000 1722.0
1707.9
1963 -220924800000 4082.3
2520.3
1964 -189388800000 1870.4
2558.2
1965 -157766400000
1966 -126230400000 2005.5
1967 -94694400000 3898.0
1968 -63158400000 1739.1
2547.5
1969 -31536000000 3443.7
3026.9
1970 0000 1802.4
2328.4
1971 31536000000 3153.5
2799.9
1972 63072000000 2053.6
2336.5
1973 94694400000 2197.4
2468.1
1974 126230400000 3810.0
2687.0
1975 157766400000 3226.3
3077.9
1976 189302400000 1503.3
2846.5
1977 220924800000 1098.0
1942.5
1978 252460800000 3029.2
1876.8
1979 283996800000 1939.5
2022.2
1980 315532800000 2062.1
2343.6
1981 347155200000 1684.3
1895.3
1982 378691200000 4028.2
2591.5
1983 410227200000 4682.4
3464.9
1984 441763200000 2151.2
3620.6
1985 473385600000 1538.3
2790.6
1986 504921600000 2073.7
1921.1
1987 536457600000 1451.6
1687.9
1988 567993600000 1961.4
1828.9
1989 599616000000 1922.4
1778.5
1990 631152000000 2194.8
2026.2
1991 662688000000 1448.9
1855.4
1992 694224000000 1530.7
1724.8
1993 725846400000 3428.8
2136.1
1994 757382400000 1234.9
2064.8
1995 788918400000 4412.1
3025.3
1996 820454400000 2865.4
2837.5
1997 852076800000 1771.3
3016.3
1998 883612800000 5117.8
3251.5
1999 915148800000 2903.5
3264.2
2000 946684800000 2426.1
3482.5
2001 978307200000 1527.9
2285.9
2002 1009843200000 1758.3
1904.1
2003 1041379200000 3253.1
2179.8
2004 1072915200000 1906.5
2306.0
2005 1104537600000 3556.4
2905.4
2006 1136073600000 4988.8
3483.9
2007 1167609600000 1312.2
3285.8
2008 1199145600000 1501.6
2600.9
2009 1230768000000 2044.0
1619.2
2010 1262304000000 2983.6
2176.4
2011 1293840000000 3616.9
2881.5
2012 1325376000000 2261.7
2954.1
2013 1356998400000 1430.5
2436.3
2014 1388534400000 1273.4
1655.2
2015 1420070400000 1050.3
1251.4
2016 1451606400000 1739.1
1354.3
2017 1483228800000 3536.5
2108.6
2018 1514764800000 1809.7
2361.8
2019 1546300800000 3940.6
3095.6
2020 1577836800000 1653.4
2467.9
2021 1609459200000 1122.8
2238.9
2022 1640995200000 1188.5
1321.6
2023 1672531200000 3089.9
1800.4
2024 1704067200000 2192.2
2156.9
2025 1735689600000 2109.9
2464.0
2026 1767225600000
2057.4
2119.8