|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1962 | -252460800000 | 273.6 |
|
| 1963 | -220924800000 | 380.4 |
|
| 1964 | -189388800000 | 231.4 |
295.1 |
| 1965 | -157766400000 | 434.5 |
348.8 |
| 1966 | -126230400000 | 252.9 |
306.3 |
| 1967 | -94694400000 | 402.9 |
363.4 |
| 1968 | -63158400000 | 305.7 |
320.5 |
| 1969 | -31536000000 | 513.3 |
407.3 |
| 1970 | 0000 | 521.2 |
446.7 |
| 1971 | 31536000000 | 441.5 |
492.0 |
| 1972 | 63072000000 | 293.4 |
418.7 |
| 1973 | 94694400000 | 406.2 |
380.4 |
| 1974 | 126230400000 | 606.8 |
435.5 |
| 1975 | 157766400000 | 415.0 |
476.0 |
| 1976 | 189302400000 | 259.3 |
427.0 |
| 1977 | 220924800000 | 172.5 |
282.3 |
| 1978 | 252460800000 | 412.8 |
281.6 |
| 1979 | 283996800000 | 275.0 |
286.8 |
| 1980 | 315532800000 | 407.6 |
365.1 |
| 1981 | 347155200000 | 262.2 |
314.9 |
| 1982 | 378691200000 | 516.7 |
395.5 |
| 1983 | 410227200000 | 629.3 |
469.4 |
| 1984 | 441763200000 | 481.9 |
542.6 |
| 1985 | 473385600000 | 287.5 |
466.2 |
| 1986 | 504921600000 | 465.4 |
411.6 |
| 1987 | 536457600000 | 273.4 |
342.1 |
| 1988 | 567993600000 | 239.3 |
326.0 |
| 1989 | 599616000000 | 325.5 |
279.4 |
| 1990 | 631152000000 | 222.7 |
262.5 |
| 1991 | 662688000000 | 203.9 |
250.7 |
| 1992 | 694224000000 | 185.8 |
204.1 |
| 1993 | 725846400000 | 404.3 |
264.7 |
| 1994 | 757382400000 | 226.2 |
272.1 |
| 1995 | 788918400000 | 599.2 |
409.9 |
| 1996 | 820454400000 | 422.1 |
415.8 |
| 1997 | 852076800000 | | |
|---|
| 1998 | 883612800000 | 670.2 |
|
| 1999 | 915148800000 | 434.7 |
|
| 2000 | 946684800000 | 354.5 |
486.5 |
| 2001 | 978307200000 | 231.5 |
340.2 |
| 2002 | 1009843200000 | 283.6 |
289.9 |
| 2003 | 1041379200000 | 405.5 |
306.9 |
| 2004 | 1072915200000 | 347.5 |
345.5 |
| 2005 | 1104537600000 | 293.4 |
348.8 |
| 2006 | 1136073600000 | 588.9 |
409.9 |
| 2007 | 1167609600000 | 270.3 |
384.2 |
| 2008 | 1199145600000 | 235.4 |
364.8 |
| 2009 | 1230768000000 | 247.3 |
251.0 |
| 2010 | 1262304000000 | 297.3 |
260.0 |
| 2011 | 1293840000000 | 424.4 |
323.0 |
| 2012 | 1325376000000 | 260.7 |
327.4 |
| 2013 | 1356998400000 | 285.1 |
323.4 |
| 2014 | 1388534400000 | 194.1 |
246.6 |
| 2015 | 1420070400000 | 243.4 |
240.9 |
| 2016 | 1451606400000 | 336.4 |
258.0 |
| 2017 | 1483228800000 | 557.1 |
379.0 |
| 2018 | 1514764800000 | 304.8 |
399.5 |
| 2019 | 1546300800000 | 480.6 |
447.5 |
| 2020 | 1577836800000 | 237.6 |
341.0 |
| 2021 | 1609459200000 | 178.5 |
298.9 |
| 2022 | 1640995200000 | 220.0 |
212.0 |
| 2023 | 1672531200000 | 387.3 |
261.9 |
| 2024 | 1704067200000 | 326.4 |
311.2 |
| 2025 | 1735689600000 | 434.7 |
382.8 |
| 2026 | 1767225600000 |
384.2 |
381.7 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1962 | -252460800000 | 97.0 |
|
| 1963 | -220924800000 | 157.1 |
|
| 1964 | -189388800000 | 78.1 |
110.7 |
| 1965 | -157766400000 | 143.5 |
126.2 |
| 1966 | -126230400000 | 89.3 |
103.7 |
| 1967 | -94694400000 | 176.2 |
136.4 |
| 1968 | -63158400000 | 84.3 |
116.6 |
| 1969 | -31536000000 | 179.4 |
146.7 |
| 1970 | 0000 | 127.8 |
130.5 |
| 1971 | 31536000000 | 150.0 |
152.4 |
| 1972 | 63072000000 | 99.1 |
125.7 |
| 1973 | 94694400000 | 131.0 |
126.7 |
| 1974 | 126230400000 | 189.7 |
139.9 |
| 1975 | 157766400000 | 166.6 |
162.4 |
| 1976 | 189302400000 | 83.2 |
146.5 |
| 1977 | 220924800000 | 55.7 |
101.8 |
| 1978 | 252460800000 | 151.0 |
96.6 |
| 1979 | 283996800000 | 107.0 |
104.6 |
| 1980 | 315532800000 | 115.7 |
124.6 |
| 1981 | 347155200000 | 83.2 |
102.0 |
| 1982 | 378691200000 | 175.2 |
124.7 |
| 1983 | 410227200000 | 231.4 |
163.2 |
| 1984 | 441763200000 | 133.3 |
179.9 |
| 1985 | 473385600000 | 92.8 |
152.5 |
| 1986 | 504921600000 | 128.6 |
118.2 |
| 1987 | 536457600000 | 79.0 |
100.1 |
| 1988 | 567993600000 | 71.6 |
93.1 |
| 1989 | 599616000000 | 117.4 |
89.3 |
| 1990 | 631152000000 | 71.3 |
86.8 |
| 1991 | 662688000000 | 78.1 |
88.9 |
| 1992 | 694224000000 | 59.6 |
69.7 |
| 1993 | 725846400000 | 169.8 |
102.5 |
| 1994 | 757382400000 | 71.0 |
100.1 |
| 1995 | 788918400000 | 237.5 |
159.4 |
| 1996 | 820454400000 | 157.1 |
155.2 |
| 1997 | 852076800000 | | |
|---|
| 1998 | 883612800000 | 292.4 |
|
| 1999 | 915148800000 | 143.0 |
|
| 2000 | 946684800000 | 113.1 |
182.8 |
| 2001 | 978307200000 | 73.6 |
109.9 |
| 2002 | 1009843200000 | 89.5 |
92.1 |
| 2003 | 1041379200000 | 160.7 |
108.0 |
| 2004 | 1072915200000 | 104.7 |
118.3 |
| 2005 | 1104537600000 | 127.4 |
131.0 |
| 2006 | 1136073600000 | 241.3 |
157.8 |
| 2007 | 1167609600000 | 79.5 |
149.4 |
| 2008 | 1199145600000 | 82.8 |
134.5 |
| 2009 | 1230768000000 | 87.6 |
83.3 |
| 2010 | 1262304000000 | 127.0 |
99.2 |
| 2011 | 1293840000000 | 197.3 |
137.3 |
| 2012 | 1325376000000 | 106.8 |
143.7 |
| 2013 | 1356998400000 | 77.2 |
127.1 |
| 2014 | 1388534400000 | 63.8 |
82.6 |
| 2015 | 1420070400000 | 53.2 |
64.7 |
| 2016 | 1451606400000 | 102.9 |
73.3 |
| 2017 | 1483228800000 | 176.4 |
110.8 |
| 2018 | 1514764800000 | 114.4 |
131.3 |
| 2019 | 1546300800000 | 182.3 |
157.7 |
| 2020 | 1577836800000 | 79.4 |
125.4 |
| 2021 | 1609459200000 | 58.6 |
106.8 |
| 2022 | 1640995200000 | 72.5 |
70.2 |
| 2023 | 1672531200000 | 160.0 |
97.0 |
| 2024 | 1704067200000 | 125.7 |
119.4 |
| 2025 | 1735689600000 | 115.9 |
133.8 |
| 2026 | 1767225600000 |
107.5 |
116.3 |
|