|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1978 | 252460800000 | 87.5 |
|
| 1979 | 283996800000 | 80.8 |
|
| 1980 | 315532800000 | 82.5 |
83.6 |
| 1981 | 347155200000 | 506.6 |
223.3 |
| 1982 | 378691200000 | 1147.4 |
578.9 |
| 1983 | 410227200000 | 1274.9 |
976.3 |
| 1984 | 441763200000 | 934.9 |
1119.1 |
| 1985 | 473385600000 | 565.8 |
925.2 |
| 1986 | 504921600000 | 909.5 |
803.4 |
| 1987 | 536457600000 | 501.2 |
658.8 |
| 1988 | 567993600000 | 414.6 |
608.4 |
| 1989 | 599616000000 | 593.0 |
502.9 |
| 1990 | 631152000000 | 465.8 |
491.1 |
| 1991 | 662688000000 | 424.9 |
494.6 |
| 1992 | 694224000000 | 420.5 |
437.1 |
| 1993 | 725846400000 | 815.5 |
553.6 |
| 1994 | 757382400000 | 439.6 |
558.5 |
| 1995 | 788918400000 | 1255.9 |
837.0 |
| 1996 | 820454400000 | 908.7 |
868.1 |
| 1997 | 852076800000 | 928.7 |
1031.1 |
| 1998 | 883612800000 | 1058.6 |
965.4 |
| 1999 | 915148800000 | 838.3 |
941.9 |
| 2000 | 946684800000 | 719.3 |
872.1 |
| 2001 | 978307200000 | 485.0 |
680.8 |
| 2002 | 1009843200000 | 570.4 |
591.5 |
| 2003 | 1041379200000 | 720.1 |
591.8 |
| 2004 | 1072915200000 | 690.7 |
660.4 |
| 2005 | 1104537600000 | 700.3 |
703.7 |
| 2006 | 1136073600000 | 1106.6 |
832.5 |
| 2007 | 1167609600000 | 521.0 |
775.9 |
| 2008 | 1199145600000 | 474.6 |
700.7 |
| 2009 | 1230768000000 | 552.6 |
516.0 |
| 2010 | 1262304000000 | 614.2 |
547.1 |
| 2011 | 1293840000000 | 922.6 |
696.5 |
| 2012 | 1325376000000 | 559.8 |
698.9 |
| 2013 | 1356998400000 | 581.7 |
688.0 |
| 2014 | 1388534400000 | 417.0 |
519.5 |
| 2015 | 1420070400000 | 413.9 |
470.8 |
| 2016 | 1451606400000 | 604.1 |
478.3 |
| 2017 | 1483228800000 | 1136.7 |
718.2 |
| 2018 | 1514764800000 | 568.6 |
769.8 |
| 2019 | 1546300800000 | 877.4 |
860.9 |
| 2020 | 1577836800000 | 399.9 |
615.3 |
| 2021 | 1609459200000 | 336.4 |
537.9 |
| 2022 | 1640995200000 | 436.0 |
390.8 |
| 2023 | 1672531200000 | 910.3 |
560.9 |
| 2024 | 1704067200000 | 773.7 |
706.7 |
| 2025 | 1735689600000 | 960.2 |
881.4 |
| 2026 | 1767225600000 |
938.3 |
890.7 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1978 | 252460800000 | 47.1 |
|
| 1979 | 283996800000 | 42.1 |
|
| 1980 | 315532800000 | 43.5 |
44.2 |
| 1981 | 347155200000 | 183.0 |
89.5 |
| 1982 | 378691200000 | 455.0 |
227.2 |
| 1983 | 410227200000 | 619.3 |
419.1 |
| 1984 | 441763200000 | 328.8 |
467.7 |
| 1985 | 473385600000 | 205.6 |
384.6 |
| 1986 | 504921600000 | 315.1 |
283.2 |
| 1987 | 536457600000 | 187.1 |
236.0 |
| 1988 | 567993600000 | 153.0 |
218.4 |
| 1989 | 599616000000 | 248.7 |
196.3 |
| 1990 | 631152000000 | 165.4 |
189.1 |
| 1991 | 662688000000 | 170.8 |
195.0 |
| 1992 | 694224000000 | 158.9 |
165.0 |
| 1993 | 725846400000 | 427.1 |
252.3 |
| 1994 | 757382400000 | 149.6 |
245.2 |
| 1995 | 788918400000 | 672.4 |
416.4 |
| 1996 | 820454400000 | 384.7 |
402.2 |
| 1997 | 852076800000 | 255.7 |
437.6 |
| 1998 | 883612800000 | 522.8 |
387.7 |
| 1999 | 915148800000 | 337.9 |
372.1 |
| 2000 | 946684800000 | 291.7 |
384.1 |
| 2001 | 978307200000 | 162.5 |
264.0 |
| 2002 | 1009843200000 | 226.2 |
226.8 |
| 2003 | 1041379200000 | 319.2 |
235.9 |
| 2004 | 1072915200000 | 268.6 |
271.3 |
| 2005 | 1104537600000 | 325.4 |
304.4 |
| 2006 | 1136073600000 | 511.9 |
368.6 |
| 2007 | 1167609600000 | 184.3 |
340.5 |
| 2008 | 1199145600000 | 165.4 |
287.2 |
| 2009 | 1230768000000 | 220.5 |
190.1 |
| 2010 | 1262304000000 | 293.9 |
226.6 |
| 2011 | 1293840000000 | 477.1 |
330.5 |
| 2012 | 1325376000000 | 227.2 |
332.8 |
| 2013 | 1356998400000 | 178.2 |
294.2 |
| 2014 | 1388534400000 | 135.7 |
180.4 |
| 2015 | 1420070400000 | 110.3 |
141.4 |
| 2016 | 1451606400000 | 232.1 |
159.4 |
| 2017 | 1483228800000 | 470.0 |
270.8 |
| 2018 | 1514764800000 | 215.9 |
306.0 |
| 2019 | 1546300800000 | 468.1 |
384.7 |
| 2020 | 1577836800000 | 159.9 |
281.3 |
| 2021 | 1609459200000 | 111.0 |
246.4 |
| 2022 | 1640995200000 | 150.9 |
140.6 |
| 2023 | 1672531200000 | 502.8 |
254.9 |
| 2024 | 1704067200000 | 351.6 |
335.1 |
| 2025 | 1735689600000 | 371.2 |
408.5 |
| 2026 | 1767225600000 |
338.5 |
353.8 |
|