|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1966 | -126230400000 | 556.4 |
|
| 1967 | -94694400000 | 677.2 |
|
| 1968 | -63158400000 | 486.2 |
573.3 |
| 1969 | -31536000000 | 868.1 |
677.2 |
| 1970 | 0000 | 770.8 |
708.3 |
| 1971 | 31536000000 | 853.6 |
830.8 |
| 1972 | 63072000000 | 485.6 |
703.3 |
| 1973 | 94694400000 | 680.4 |
673.2 |
| 1974 | 126230400000 | 1282.7 |
816.2 |
| 1975 | 157766400000 | 767.6 |
910.2 |
| 1976 | 189302400000 | 354.3 |
801.6 |
| 1977 | 220924800000 | 50.3 |
390.8 |
| 1978 | 252460800000 | 794.3 |
399.7 |
| 1979 | 283996800000 | 359.5 |
401.4 |
| 1980 | 315532800000 | 707.6 |
620.5 |
| 1981 | 347155200000 | 366.8 |
477.9 |
| 1982 | 378691200000 | 1071.4 |
715.2 |
| 1983 | 410227200000 | 1287.1 |
908.4 |
| 1984 | 441763200000 | 800.8 |
1053.1 |
| 1985 | 473385600000 | 429.1 |
839.0 |
| 1986 | 504921600000 | 789.8 |
673.2 |
| 1987 | 536457600000 | 316.0 |
511.6 |
| 1988 | 567993600000 | 325.7 |
477.2 |
| 1989 | 599616000000 | 432.8 |
358.2 |
| 1990 | 631152000000 | 300.9 |
353.1 |
| 1991 | 662688000000 | 184.5 |
306.1 |
| 1992 | 694224000000 | 236.5 |
240.6 |
| 1993 | 725846400000 | 570.8 |
330.6 |
| 1994 | 757382400000 | 244.2 |
350.5 |
| 1995 | 788918400000 | | |
|---|
| 1996 | 820454400000 | | |
|---|
| 1997 | 852076800000 | | |
|---|
| 1998 | 883612800000 | | |
|---|
| 1999 | 915148800000 | | |
|---|
| 2000 | 946684800000 | 480.8 |
|
| 2001 | 978307200000 | 184.8 |
|
| 2002 | 1009843200000 | 485.7 |
383.8 |
| 2003 | 1041379200000 | 808.6 |
493.0 |
| 2004 | 1072915200000 | 566.9 |
620.4 |
| 2005 | 1104537600000 | | |
|---|
| 2006 | 1136073600000 | | |
|---|
| 2007 | 1167609600000 | | |
|---|
| 2008 | 1199145600000 | 390.7 |
|
| 2009 | 1230768000000 | 298.4 |
|
| 2010 | 1262304000000 | 488.9 |
392.6 |
| 2011 | 1293840000000 | 621.8 |
469.7 |
| 2012 | 1325376000000 | 374.3 |
495.0 |
| 2013 | 1356998400000 | 339.0 |
445.0 |
| 2014 | 1388534400000 | 209.3 |
307.5 |
| 2015 | 1420070400000 | 345.7 |
298.0 |
| 2016 | 1451606400000 | 693.6 |
416.2 |
| 2017 | 1483228800000 | 1059.9 |
699.7 |
| 2018 | 1514764800000 | 353.1 |
702.2 |
| 2019 | 1546300800000 | 707.7 |
706.9 |
| 2020 | 1577836800000 | 166.4 |
409.1 |
| 2021 | 1609459200000 | 190.7 |
354.9 |
| 2022 | 1640995200000 | 347.8 |
235.0 |
| 2023 | 1672531200000 | 647.2 |
395.2 |
| 2024 | 1704067200000 | 690.5 |
561.9 |
| 2025 | 1735689600000 | 845.5 |
727.7 |
| 2026 | 1767225600000 |
575.7 |
703.9 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1966 | -126230400000 | 46.1 |
|
| 1967 | -94694400000 | 153.0 |
|
| 1968 | -63158400000 | 33.1 |
77.4 |
| 1969 | -31536000000 | 49.9 |
78.6 |
| 1970 | 0000 | 25.5 |
36.2 |
| 1971 | 31536000000 | 70.8 |
48.7 |
| 1972 | 63072000000 | 67.7 |
54.7 |
| 1973 | 94694400000 | 53.2 |
63.9 |
| 1974 | 126230400000 | 148.7 |
89.9 |
| 1975 | 157766400000 | 81.5 |
94.5 |
| 1976 | 189302400000 | 54.5 |
94.9 |
| 1977 | 220924800000 | 10.5 |
48.9 |
| 1978 | 252460800000 | 115.1 |
60.0 |
| 1979 | 283996800000 | 86.8 |
70.8 |
| 1980 | 315532800000 | 68.6 |
90.2 |
| 1981 | 347155200000 | 42.0 |
65.8 |
| 1982 | 378691200000 | 236.7 |
115.8 |
| 1983 | 410227200000 | 175.3 |
151.3 |
| 1984 | 441763200000 | 79.6 |
163.8 |
| 1985 | 473385600000 | 40.5 |
98.5 |
| 1986 | 504921600000 | 41.5 |
53.9 |
| 1987 | 536457600000 | 30.8 |
37.6 |
| 1988 | 567993600000 | 19.9 |
30.7 |
| 1989 | 599616000000 | 63.5 |
38.1 |
| 1990 | 631152000000 | 100.8 |
61.4 |
| 1991 | 662688000000 | 33.4 |
65.9 |
| 1992 | 694224000000 | 41.8 |
58.7 |
| 1993 | 725846400000 | 139.5 |
71.6 |
| 1994 | 757382400000 | 32.5 |
71.3 |
| 1995 | 788918400000 | | |
|---|
| 1996 | 820454400000 | | |
|---|
| 1997 | 852076800000 | | |
|---|
| 1998 | 883612800000 | | |
|---|
| 1999 | 915148800000 | | |
|---|
| 2000 | 946684800000 | 43.3 |
|
| 2001 | 978307200000 | 25.8 |
|
| 2002 | 1009843200000 | 32.1 |
33.7 |
| 2003 | 1041379200000 | 241.0 |
99.6 |
| 2004 | 1072915200000 | 47.6 |
106.9 |
| 2005 | 1104537600000 | | |
|---|
| 2006 | 1136073600000 | | |
|---|
| 2007 | 1167609600000 | | |
|---|
| 2008 | 1199145600000 | 24.0 |
|
| 2009 | 1230768000000 | 69.6 |
|
| 2010 | 1262304000000 | 175.0 |
89.6 |
| 2011 | 1293840000000 | 71.1 |
105.2 |
| 2012 | 1325376000000 | 114.7 |
120.3 |
| 2013 | 1356998400000 | 42.7 |
76.2 |
| 2014 | 1388534400000 | 50.8 |
69.4 |
| 2015 | 1420070400000 | 18.0 |
37.2 |
| 2016 | 1451606400000 | 43.0 |
37.2 |
| 2017 | 1483228800000 | 119.8 |
60.2 |
| 2018 | 1514764800000 | 117.5 |
93.4 |
| 2019 | 1546300800000 | 168.4 |
135.2 |
| 2020 | 1577836800000 | 42.5 |
109.5 |
| 2021 | 1609459200000 | 16.0 |
75.6 |
| 2022 | 1640995200000 | 71.8 |
43.4 |
| 2023 | 1672531200000 | 75.5 |
54.4 |
| 2024 | 1704067200000 | 67.5 |
71.6 |
| 2025 | 1735689600000 | 95.8 |
79.6 |
| 2026 | 1767225600000 |
65.6 |
76.3 |
|