Water Year
Seasonal (Apr-Jul)
Rank Year Annual Flow 3-Year Mean
1961 -283996800000 123.8
1962 -252460800000 284.8
1963 -220924800000 649.9
352.8
1964 -189388800000 183.7
372.8
1965 -157766400000 746.1
526.6
1966 -126230400000 184.3
371.4
1967 -94694400000 695.5
542.0
1968 -63158400000 258.5
379.4
1969 -31536000000 725.6
559.9
1970 0000 512.2
498.8
1971 31536000000 678.0
638.6
1972 63072000000 240.9
477.0
1973 94694400000 317.9
412.3
1974 126230400000 722.2
427.0
1975 157766400000 484.1
508.1
1976 189302400000 92.3
432.9
1977 220924800000 30.3
202.2
1978 252460800000 411.2
177.9
1979 283996800000 148.9
196.8
1980 315532800000 478.9
346.4
1981 347155200000 134.4
254.1
1982 378691200000 912.2
508.5
1983 410227200000 1042.7
696.4
1984 441763200000 562.9
839.3
1985 473385600000 213.6
606.4
1986 504921600000 639.8
472.1
1987 536457600000 101.1
318.2
1988 567993600000 48.4
263.1
1989 599616000000 268.4
139.3
1990 631152000000 126.0
147.6
1991 662688000000 109.8
168.1
1992 694224000000 48.3
94.7
1993 725846400000 541.1
233.1
1994 757382400000
1995 788918400000
1996 820454400000
1997 852076800000
1998 883612800000
1999 915148800000
2000 946684800000
2001 978307200000
2002 1009843200000
2003 1041379200000
2004 1072915200000
2005 1104537600000
2006 1136073600000
2007 1167609600000 114.1
2008 1199145600000 122.6
2009 1230768000000 200.8
145.8
2010 1262304000000 226.6
183.3
2011 1293840000000 603.1
343.5
2012 1325376000000 148.4
326.0
2013 1356998400000 225.6
325.7
2014 1388534400000 66.2
146.7
2015 1420070400000 92.8
128.2
2016 1451606400000 311.4
156.8
2017 1483228800000 1077.3
493.8
2018 1514764800000 281.0
556.6
2019 1546300800000 534.7
631.0
2020 1577836800000 135.3
317.0
2021 1609459200000 76.4
248.8
2022 1640995200000 223.5
145.1
2023 1672531200000 709.1
336.3
2024 1704067200000 440.1
457.6
2025 1735689600000 501.5
550.3
2026 1767225600000
543.2
495.0
Rank Year Seasonal Flow 3-Year Mean
1961 -283996800000 53.8
1962 -252460800000 188.9
1963 -220924800000 288.5
177.1
1964 -189388800000 102.2
193.2
1965 -157766400000 298.1
229.6
1966 -126230400000 79.2
159.8
1967 -94694400000 392.7
256.7
1968 -63158400000 73.0
181.6
1969 -31536000000 419.6
295.1
1970 0000 105.0
199.2
1971 31536000000 390.9
305.2
1972 63072000000 86.6
194.2
1973 94694400000 145.7
207.7
1974 126230400000 263.8
165.4
1975 157766400000 335.6
248.4
1976 189302400000 21.5
207.0
1977 220924800000 8.0
121.7
1978 252460800000 150.5
60.0
1979 283996800000 70.5
76.3
1980 315532800000 149.1
123.4
1981 347155200000 37.5
85.7
1982 378691200000 351.0
179.2
1983 410227200000 523.3
303.9
1984 441763200000 137.4
337.3
1985 473385600000 103.9
254.9
1986 504921600000 111.4
117.6
1987 536457600000 23.9
79.7
1988 567993600000 10.3
48.5
1989 599616000000 87.1
40.4
1990 631152000000 38.5
45.3
1991 662688000000 57.9
61.2
1992 694224000000 11.0
35.8
1993 725846400000 261.9
110.2
1994 757382400000
1995 788918400000
1996 820454400000
1997 852076800000
1998 883612800000
1999 915148800000
2000 946684800000
2001 978307200000
2002 1009843200000
2003 1041379200000
2004 1072915200000
2005 1104537600000
2006 1136073600000
2007 1167609600000 33.2
2008 1199145600000 51.6
2009 1230768000000 82.4
55.7
2010 1262304000000 128.0
87.3
2011 1293840000000 361.5
190.6
2012 1325376000000 78.0
189.2
2013 1356998400000 42.2
160.6
2014 1388534400000 21.8
47.3
2015 1420070400000 7.2
23.7
2016 1451606400000 76.2
35.1
2017 1483228800000 331.8
138.4
2018 1514764800000 114.6
174.2
2019 1546300800000 289.7
245.4
2020 1577836800000 63.0
155.8
2021 1609459200000 21.6
124.8
2022 1640995200000 63.6
49.4
2023 1672531200000 395.0
160.0
2024 1704067200000 202.0
220.2
2025 1735689600000 141.7
246.2
2026 1767225600000
124.4
156.0