|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1980 | 315532800000 | 23.0 |
|
| 1981 | 347155200000 | 10.1 |
|
| 1982 | 378691200000 | 34.1 |
22.4 |
| 1983 | 410227200000 | 33.7 |
26.0 |
| 1984 | 441763200000 | 25.7 |
31.1 |
| 1985 | 473385600000 | 13.4 |
24.3 |
| 1986 | 504921600000 | 24.4 |
21.2 |
| 1987 | 536457600000 | 8.9 |
15.6 |
| 1988 | 567993600000 | 7.3 |
13.5 |
| 1989 | 599616000000 | 18.0 |
11.4 |
| 1990 | 631152000000 | 11.0 |
12.1 |
| 1991 | 662688000000 | 9.8 |
12.9 |
| 1992 | 694224000000 | 8.1 |
9.6 |
| 1993 | 725846400000 | 21.6 |
13.1 |
| 1994 | 757382400000 | 7.8 |
12.5 |
| 1995 | 788918400000 | 30.8 |
20.1 |
| 1996 | 820454400000 | 25.4 |
21.4 |
| 1997 | 852076800000 | 27.9 |
28.0 |
| 1998 | 883612800000 | 23.7 |
25.7 |
| 1999 | 915148800000 | 22.4 |
24.7 |
| 2000 | 946684800000 | 16.2 |
20.8 |
| 2001 | 978307200000 | 8.5 |
15.7 |
| 2002 | 1009843200000 | 13.9 |
12.9 |
| 2003 | 1041379200000 | 18.4 |
13.6 |
| 2004 | 1072915200000 | 13.3 |
15.2 |
| 2005 | 1104537600000 | 20.3 |
17.4 |
| 2006 | 1136073600000 | 29.2 |
21.0 |
| 2007 | 1167609600000 | 10.8 |
20.1 |
| 2008 | 1199145600000 | 11.4 |
17.2 |
| 2009 | 1230768000000 | 14.6 |
12.3 |
| 2010 | 1262304000000 | 16.3 |
14.1 |
| 2011 | 1293840000000 | 30.6 |
20.5 |
| 2012 | 1325376000000 | 13.1 |
20.0 |
| 2013 | 1356998400000 | 11.9 |
18.5 |
| 2014 | 1388534400000 | 7.9 |
11.0 |
| 2015 | 1420070400000 | 8.2 |
9.3 |
| 2016 | 1451606400000 | 19.3 |
11.8 |
| 2017 | 1483228800000 | 45.2 |
24.3 |
| 2018 | 1514764800000 | 16.2 |
26.9 |
| 2019 | 1546300800000 | 24.4 |
28.6 |
| 2020 | 1577836800000 | 11.4 |
17.3 |
| 2021 | 1609459200000 | 6.6 |
14.1 |
| 2022 | 1640995200000 | 14.6 |
10.9 |
| 2023 | 1672531200000 | 29.3 |
16.8 |
| 2024 | 1704067200000 | 16.2 |
20.0 |
| 2025 | 1735689600000 | 17.7 |
21.1 |
| 2026 | 1767225600000 |
20.4 |
18.1 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1980 | 315532800000 | 16.7 |
|
| 1981 | 347155200000 | 5.1 |
|
| 1982 | 378691200000 | 19.7 |
13.8 |
| 1983 | 410227200000 | 24.8 |
16.5 |
| 1984 | 441763200000 | 15.1 |
19.9 |
| 1985 | 473385600000 | 8.8 |
16.2 |
| 1986 | 504921600000 | 14.3 |
12.7 |
| 1987 | 536457600000 | 3.2 |
8.7 |
| 1988 | 567993600000 | 4.0 |
7.1 |
| 1989 | 599616000000 | 12.6 |
6.6 |
| 1990 | 631152000000 | 6.5 |
7.7 |
| 1991 | 662688000000 | 7.1 |
8.7 |
| 1992 | 694224000000 | 4.7 |
6.1 |
| 1993 | 725846400000 | 17.1 |
9.7 |
| 1994 | 757382400000 | 4.9 |
8.9 |
| 1995 | 788918400000 | 22.8 |
14.9 |
| 1996 | 820454400000 | 16.8 |
14.8 |
| 1997 | 852076800000 | 14.1 |
17.9 |
| 1998 | 883612800000 | 17.4 |
16.1 |
| 1999 | 915148800000 | 16.4 |
16.0 |
| 2000 | 946684800000 | 11.1 |
15.0 |
| 2001 | 978307200000 | 4.9 |
10.8 |
| 2002 | 1009843200000 | 9.8 |
8.6 |
| 2003 | 1041379200000 | 11.9 |
8.9 |
| 2004 | 1072915200000 | 8.3 |
10.0 |
| 2005 | 1104537600000 | 15.4 |
11.9 |
| 2006 | 1136073600000 | 17.9 |
13.9 |
| 2007 | 1167609600000 | 5.8 |
13.1 |
| 2008 | 1199145600000 | 7.6 |
10.4 |
| 2009 | 1230768000000 | 9.9 |
7.8 |
| 2010 | 1262304000000 | 12.2 |
9.9 |
| 2011 | 1293840000000 | 20.9 |
14.3 |
| 2012 | 1325376000000 | 8.2 |
13.8 |
| 2013 | 1356998400000 | 5.7 |
11.6 |
| 2014 | 1388534400000 | 4.0 |
6.0 |
| 2015 | 1420070400000 | 2.7 |
4.2 |
| 2016 | 1451606400000 | 11.9 |
6.2 |
| 2017 | 1483228800000 | 24.3 |
13.0 |
| 2018 | 1514764800000 | 9.1 |
15.1 |
| 2019 | 1546300800000 | 18.1 |
17.2 |
| 2020 | 1577836800000 | 7.4 |
11.5 |
| 2021 | 1609459200000 | 4.2 |
9.9 |
| 2022 | 1640995200000 | 8.0 |
6.5 |
| 2023 | 1672531200000 | 19.7 |
10.6 |
| 2024 | 1704067200000 | 11.3 |
13.0 |
| 2025 | 1735689600000 | 11.1 |
14.0 |
| 2026 | 1767225600000 |
9.5 |
10.7 |
|