|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1961 | -283996800000 | 118.1 |
|
| 1962 | -252460800000 | 400.7 |
|
| 1963 | -220924800000 | 491.0 |
336.6 |
| 1964 | -189388800000 | 229.9 |
373.9 |
| 1965 | -157766400000 | 487.8 |
402.9 |
| 1966 | -126230400000 | 247.5 |
321.8 |
| 1967 | -94694400000 | 1024.2 |
586.5 |
| 1968 | -63158400000 | 220.2 |
497.3 |
| 1969 | -31536000000 | 1270.8 |
838.4 |
| 1970 | 0000 | 359.3 |
616.8 |
| 1971 | 31536000000 | 293.0 |
641.0 |
| 1972 | 63072000000 | 168.0 |
273.4 |
| 1973 | 94694400000 | 615.5 |
358.8 |
| 1974 | 126230400000 | 489.7 |
424.4 |
| 1975 | 157766400000 | 383.4 |
496.2 |
| 1976 | 189302400000 | 146.9 |
340.0 |
| 1977 | 220924800000 | 93.7 |
208.0 |
| 1978 | 252460800000 | 833.5 |
358.0 |
| 1979 | 283996800000 | 416.0 |
447.7 |
| 1980 | 315532800000 | 884.2 |
711.2 |
| 1981 | 347155200000 | 248.3 |
516.2 |
| 1982 | 378691200000 | 771.2 |
634.6 |
| 1983 | 410227200000 | 1401.4 |
807.0 |
| 1984 | 441763200000 | 516.6 |
896.4 |
| 1985 | 473385600000 | 332.4 |
750.2 |
| 1986 | 504921600000 | 814.8 |
554.6 |
| 1987 | 536457600000 | 183.8 |
443.7 |
| 1988 | 567993600000 | 184.6 |
394.4 |
| 1989 | 599616000000 | 214.2 |
194.2 |
| 1990 | 631152000000 | 141.1 |
180.0 |
| 1991 | 662688000000 | 252.2 |
202.5 |
| 1992 | 694224000000 | 149.0 |
180.8 |
| 1993 | 725846400000 | 549.9 |
317.0 |
| 1994 | 757382400000 | 191.8 |
296.9 |
| 1995 | 788918400000 | 866.2 |
535.9 |
| 1996 | 820454400000 | 527.7 |
528.6 |
| 1997 | 852076800000 | 764.9 |
719.6 |
| 1998 | 883612800000 | 931.0 |
741.2 |
| 1999 | 915148800000 | 265.9 |
653.9 |
| 2000 | 946684800000 | 369.5 |
522.1 |
| 2001 | 978307200000 | 261.8 |
299.1 |
| 2002 | 1009843200000 | 308.1 |
313.1 |
| 2003 | 1041379200000 | 425.9 |
331.9 |
| 2004 | 1072915200000 | 238.3 |
324.1 |
| 2005 | 1104537600000 | 624.4 |
429.5 |
| 2006 | 1136073600000 | 711.8 |
524.8 |
| 2007 | 1167609600000 | 169.3 |
501.8 |
| 2008 | 1199145600000 | 333.5 |
404.9 |
| 2009 | 1230768000000 | 314.0 |
272.3 |
| 2010 | 1262304000000 | 577.4 |
408.3 |
| 2011 | 1293840000000 | 864.6 |
585.3 |
| 2012 | 1325376000000 | 256.4 |
566.1 |
| 2013 | 1356998400000 | 152.7 |
424.6 |
| 2014 | 1388534400000 | 102.5 |
170.5 |
| 2015 | 1420070400000 | 89.5 |
114.9 |
| 2016 | 1451606400000 | 305.0 |
165.6 |
| 2017 | 1483228800000 | 998.0 |
464.1 |
| 2018 | 1514764800000 | 254.4 |
519.1 |
| 2019 | 1546300800000 | 731.5 |
661.3 |
| 2020 | 1577836800000 | 200.9 |
395.6 |
| 2021 | 1609459200000 | 69.3 |
333.9 |
| 2022 | 1640995200000 | 149.5 |
139.9 |
| 2023 | 1672531200000 | 1334.5 |
517.8 |
| 2024 | 1704067200000 | 417.9 |
633.9 |
| 2025 | 1735689600000 | 348.9 |
700.4 |
| 2026 | 1767225600000 |
297.3 |
354.7 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1961 | -283996800000 | 77.2 |
|
| 1962 | -252460800000 | 297.8 |
|
| 1963 | -220924800000 | 325.4 |
233.5 |
| 1964 | -189388800000 | 163.0 |
262.1 |
| 1965 | -157766400000 | 313.4 |
267.2 |
| 1966 | -126230400000 | 149.4 |
208.6 |
| 1967 | -94694400000 | 609.9 |
357.6 |
| 1968 | -63158400000 | 131.9 |
297.1 |
| 1969 | -31536000000 | 799.4 |
513.7 |
| 1970 | 0000 | 205.4 |
378.9 |
| 1971 | 31536000000 | 194.6 |
399.8 |
| 1972 | 63072000000 | 91.6 |
163.9 |
| 1973 | 94694400000 | 450.6 |
245.6 |
| 1974 | 126230400000 | 332.2 |
291.5 |
| 1975 | 157766400000 | 297.0 |
359.9 |
| 1976 | 189302400000 | 75.2 |
234.8 |
| 1977 | 220924800000 | 61.7 |
144.6 |
| 1978 | 252460800000 | 542.0 |
226.3 |
| 1979 | 283996800000 | 287.1 |
297.0 |
| 1980 | 315532800000 | 465.3 |
431.5 |
| 1981 | 347155200000 | 172.0 |
308.1 |
| 1982 | 378691200000 | 548.0 |
395.1 |
| 1983 | 410227200000 | 748.7 |
489.6 |
| 1984 | 441763200000 | 240.5 |
512.4 |
| 1985 | 473385600000 | 218.0 |
402.4 |
| 1986 | 504921600000 | 427.4 |
295.3 |
| 1987 | 536457600000 | 116.7 |
254.0 |
| 1988 | 567993600000 | 107.1 |
217.1 |
| 1989 | 599616000000 | 141.9 |
121.9 |
| 1990 | 631152000000 | 94.6 |
114.5 |
| 1991 | 662688000000 | 192.9 |
143.1 |
| 1992 | 694224000000 | 96.5 |
128.0 |
| 1993 | 725846400000 | 379.0 |
222.8 |
| 1994 | 757382400000 | 132.3 |
202.6 |
| 1995 | 788918400000 | 601.8 |
371.1 |
| 1996 | 820454400000 | 337.2 |
357.1 |
| 1997 | 852076800000 | 282.4 |
407.1 |
| 1998 | 883612800000 | 669.9 |
429.8 |
| 1999 | 915148800000 | 161.6 |
371.3 |
| 2000 | 946684800000 | 244.7 |
358.7 |
| 2001 | 978307200000 | 187.5 |
197.9 |
| 2002 | 1009843200000 | 195.6 |
209.3 |
| 2003 | 1041379200000 | 268.0 |
217.0 |
| 2004 | 1072915200000 | 133.4 |
199.0 |
| 2005 | 1104537600000 | 451.3 |
284.2 |
| 2006 | 1136073600000 | 530.7 |
371.8 |
| 2007 | 1167609600000 | 101.6 |
361.2 |
| 2008 | 1199145600000 | 225.2 |
285.8 |
| 2009 | 1230768000000 | 213.1 |
179.9 |
| 2010 | 1262304000000 | 413.6 |
283.9 |
| 2011 | 1293840000000 | 546.8 |
391.2 |
| 2012 | 1325376000000 | 163.4 |
374.6 |
| 2013 | 1356998400000 | 80.9 |
263.7 |
| 2014 | 1388534400000 | 73.9 |
106.1 |
| 2015 | 1420070400000 | 42.1 |
65.6 |
| 2016 | 1451606400000 | 191.1 |
102.4 |
| 2017 | 1483228800000 | 551.3 |
261.5 |
| 2018 | 1514764800000 | 169.9 |
304.1 |
| 2019 | 1546300800000 | 512.8 |
411.3 |
| 2020 | 1577836800000 | 137.5 |
273.4 |
| 2021 | 1609459200000 | 42.9 |
231.0 |
| 2022 | 1640995200000 | 82.2 |
87.5 |
| 2023 | 1672531200000 | 777.1 |
300.7 |
| 2024 | 1704067200000 | 286.3 |
381.9 |
| 2025 | 1735689600000 | 214.7 |
426.1 |
| 2026 | 1767225600000 | 120.6 |
207.2 |
|