|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1976 | 189302400000 | 18.1 |
|
| 1977 | 220924800000 | 5.7 |
|
| 1978 | 252460800000 | 212.3 |
78.7 |
| 1979 | 283996800000 | 89.6 |
102.5 |
| 1980 | 315532800000 | 132.6 |
144.8 |
| 1981 | 347155200000 | 26.8 |
83.0 |
| 1982 | 378691200000 | 175.5 |
111.6 |
| 1983 | 410227200000 | 355.4 |
185.9 |
| 1984 | 441763200000 | 87.9 |
206.3 |
| 1985 | 473385600000 | 31.4 |
158.2 |
| 1986 | 504921600000 | 151.8 |
90.4 |
| 1987 | 536457600000 | 20.3 |
67.8 |
| 1988 | 567993600000 | 16.1 |
62.7 |
| 1989 | 599616000000 | 16.1 |
17.5 |
| 1990 | 631152000000 | 12.1 |
14.8 |
| 1991 | 662688000000 | 32.8 |
20.3 |
| 1992 | 694224000000 | 23.7 |
22.9 |
| 1993 | 725846400000 | 134.8 |
63.8 |
| 1994 | 757382400000 | 20.8 |
59.8 |
| 1995 | 788918400000 | 185.3 |
113.6 |
| 1996 | 820454400000 | 90.5 |
98.9 |
| 1997 | 852076800000 | 231.3 |
169.0 |
| 1998 | 883612800000 | 196.5 |
172.8 |
| 1999 | 915148800000 | 54.6 |
160.8 |
| 2000 | 946684800000 | 89.4 |
113.5 |
| 2001 | 978307200000 | 35.2 |
59.7 |
| 2002 | 1009843200000 | 31.9 |
52.1 |
| 2003 | 1041379200000 | 31.5 |
32.9 |
| 2004 | 1072915200000 | 20.9 |
28.1 |
| 2005 | 1104537600000 | 135.6 |
62.7 |
| 2006 | 1136073600000 | 152.0 |
102.8 |
| 2007 | 1167609600000 | 19.1 |
102.2 |
| 2008 | 1199145600000 | 36.9 |
69.3 |
| 2009 | 1230768000000 | 27.0 |
27.7 |
| 2010 | 1262304000000 | 73.9 |
45.9 |
| 2011 | 1293840000000 | 194.6 |
98.5 |
| 2012 | 1325376000000 | 27.4 |
98.6 |
| 2013 | 1356998400000 | 17.4 |
79.8 |
| 2014 | 1388534400000 | 5.0 |
16.6 |
| 2015 | 1420070400000 | 2.9 |
8.4 |
| 2016 | 1451606400000 | 53.2 |
20.4 |
| 2017 | 1483228800000 | 264.8 |
107.0 |
| 2018 | 1514764800000 | 39.3 |
119.1 |
| 2019 | 1546300800000 | 134.3 |
146.1 |
| 2020 | 1577836800000 | 24.7 |
66.1 |
| 2021 | 1609459200000 | 11.3 |
56.8 |
| 2022 | 1640995200000 | 15.5 |
17.2 |
| 2023 | 1672531200000 | 277.0 |
101.3 |
| 2024 | 1704067200000 | 50.5 |
114.3 |
| 2025 | 1735689600000 | 34.7 |
120.7 |
| 2026 | 1767225600000 |
37.4 |
40.8 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1976 | 189302400000 | 6.5 |
|
| 1977 | 220924800000 | 2.5 |
|
| 1978 | 252460800000 | 77.5 |
28.8 |
| 1979 | 283996800000 | 28.0 |
36.0 |
| 1980 | 315532800000 | 35.6 |
47.0 |
| 1981 | 347155200000 | 9.6 |
24.4 |
| 1982 | 378691200000 | 82.1 |
42.4 |
| 1983 | 410227200000 | 78.2 |
56.6 |
| 1984 | 441763200000 | 14.6 |
58.3 |
| 1985 | 473385600000 | 10.7 |
34.5 |
| 1986 | 504921600000 | 25.1 |
16.8 |
| 1987 | 536457600000 | 6.5 |
14.1 |
| 1988 | 567993600000 | 6.3 |
12.6 |
| 1989 | 599616000000 | 5.2 |
6.0 |
| 1990 | 631152000000 | 5.3 |
5.6 |
| 1991 | 662688000000 | 12.7 |
7.7 |
| 1992 | 694224000000 | 6.8 |
8.3 |
| 1993 | 725846400000 | 36.4 |
18.6 |
| 1994 | 757382400000 | 7.9 |
17.0 |
| 1995 | 788918400000 | 48.4 |
30.9 |
| 1996 | 820454400000 | 27.1 |
27.8 |
| 1997 | 852076800000 | 18.9 |
31.5 |
| 1998 | 883612800000 | 83.0 |
43.0 |
| 1999 | 915148800000 | 20.1 |
40.7 |
| 2000 | 946684800000 | 20.3 |
41.2 |
| 2001 | 978307200000 | 12.2 |
17.5 |
| 2002 | 1009843200000 | 7.3 |
13.3 |
| 2003 | 1041379200000 | 15.6 |
11.7 |
| 2004 | 1072915200000 | 4.7 |
9.2 |
| 2005 | 1104537600000 | 39.3 |
19.9 |
| 2006 | 1136073600000 | 91.4 |
45.1 |
| 2007 | 1167609600000 | 4.9 |
45.2 |
| 2008 | 1199145600000 | 8.4 |
34.9 |
| 2009 | 1230768000000 | 10.9 |
8.1 |
| 2010 | 1262304000000 | 27.8 |
15.7 |
| 2011 | 1293840000000 | 56.2 |
31.6 |
| 2012 | 1325376000000 | 11.9 |
32.0 |
| 2013 | 1356998400000 | 3.7 |
23.9 |
| 2014 | 1388534400000 | 1.7 |
5.8 |
| 2015 | 1420070400000 | 0.6 |
2.0 |
| 2016 | 1451606400000 | 13.9 |
5.4 |
| 2017 | 1483228800000 | 43.9 |
19.5 |
| 2018 | 1514764800000 | 13.9 |
23.9 |
| 2019 | 1546300800000 | 36.3 |
31.4 |
| 2020 | 1577836800000 | 11.6 |
20.6 |
| 2021 | 1609459200000 | 2.7 |
16.9 |
| 2022 | 1640995200000 | 3.4 |
5.9 |
| 2023 | 1672531200000 | 50.3 |
18.8 |
| 2024 | 1704067200000 | 20.6 |
24.8 |
| 2025 | 1735689600000 | 11.0 |
27.3 |
| 2026 | 1767225600000 | 8.4 |
13.3 |
|