|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1972 | 63072000000 | 68.3 |
|
| 1973 | 94694400000 | 115.4 |
|
| 1974 | 126230400000 | 130.5 |
104.7 |
| 1975 | 157766400000 | 123.4 |
123.1 |
| 1976 | 189302400000 | 42.0 |
98.7 |
| 1977 | 220924800000 | 27.6 |
64.3 |
| 1978 | 252460800000 | 141.0 |
70.2 |
| 1979 | 283996800000 | 117.0 |
95.2 |
| 1980 | 315532800000 | 188.1 |
148.7 |
| 1981 | 347155200000 | 70.4 |
125.2 |
| 1982 | 378691200000 | 203.8 |
154.1 |
| 1983 | 410227200000 | 319.9 |
198.0 |
| 1984 | 441763200000 | 174.8 |
232.9 |
| 1985 | 473385600000 | 93.9 |
196.2 |
| 1986 | 504921600000 | 214.7 |
161.1 |
| 1987 | 536457600000 | 59.1 |
122.5 |
| 1988 | 567993600000 | 38.6 |
104.1 |
| 1989 | 599616000000 | 58.0 |
51.9 |
| 1990 | 631152000000 | 42.0 |
46.2 |
| 1991 | 662688000000 | 40.3 |
46.8 |
| 1992 | 694224000000 | 33.0 |
38.4 |
| 1993 | 725846400000 | 104.0 |
59.1 |
| 1994 | 757382400000 | 47.3 |
61.4 |
| 1995 | 788918400000 | 206.1 |
119.1 |
| 1996 | 820454400000 | 157.4 |
136.9 |
| 1997 | 852076800000 | 228.3 |
197.2 |
| 1998 | 883612800000 | 203.1 |
196.3 |
| 1999 | 915148800000 | 126.4 |
185.9 |
| 2000 | 946684800000 | 85.3 |
138.3 |
| 2001 | 978307200000 | 57.1 |
89.6 |
| 2002 | 1009843200000 | 46.7 |
63.1 |
| 2003 | 1041379200000 | 72.3 |
58.7 |
| 2004 | 1072915200000 | 63.4 |
60.8 |
| 2005 | 1104537600000 | 169.2 |
101.7 |
| 2006 | 1136073600000 | 214.6 |
149.1 |
| 2007 | 1167609600000 | 48.3 |
144.0 |
| 2008 | 1199145600000 | 57.5 |
106.8 |
| 2009 | 1230768000000 | 74.1 |
60.0 |
| 2010 | 1262304000000 | 103.9 |
78.5 |
| 2011 | 1293840000000 | 197.8 |
125.3 |
| 2012 | 1325376000000 | 48.8 |
116.8 |
| 2013 | 1356998400000 | 35.3 |
94.0 |
| 2014 | 1388534400000 | 26.6 |
36.9 |
| 2015 | 1420070400000 | 24.5 |
28.8 |
| 2016 | 1451606400000 | 64.1 |
38.4 |
| 2017 | 1483228800000 | 322.0 |
136.9 |
| 2018 | 1514764800000 | 106.6 |
164.2 |
| 2019 | 1546300800000 | 155.7 |
194.8 |
| 2020 | 1577836800000 | 50.3 |
104.2 |
| 2021 | 1609459200000 | 29.7 |
78.6 |
| 2022 | 1640995200000 | 46.9 |
42.3 |
| 2023 | 1672531200000 | 335.9 |
137.5 |
| 2024 | 1704067200000 | 101.6 |
161.5 |
| 2025 | 1735689600000 | 57.9 |
165.2 |
| 2026 | 1767225600000 |
99.0 |
86.2 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1972 | 63072000000 | 27.5 |
|
| 1973 | 94694400000 | 76.6 |
|
| 1974 | 126230400000 | 69.6 |
57.9 |
| 1975 | 157766400000 | 74.4 |
73.5 |
| 1976 | 189302400000 | 8.1 |
50.7 |
| 1977 | 220924800000 | 9.1 |
30.5 |
| 1978 | 252460800000 | 91.2 |
36.2 |
| 1979 | 283996800000 | 63.0 |
54.4 |
| 1980 | 315532800000 | 116.7 |
90.3 |
| 1981 | 347155200000 | 28.8 |
69.5 |
| 1982 | 378691200000 | 126.7 |
90.7 |
| 1983 | 410227200000 | 182.6 |
112.7 |
| 1984 | 441763200000 | 80.4 |
129.9 |
| 1985 | 473385600000 | 41.8 |
101.6 |
| 1986 | 504921600000 | 127.4 |
83.2 |
| 1987 | 536457600000 | 18.3 |
62.5 |
| 1988 | 567993600000 | 10.3 |
52.0 |
| 1989 | 599616000000 | 31.6 |
20.1 |
| 1990 | 631152000000 | 11.4 |
17.7 |
| 1991 | 662688000000 | 17.3 |
20.1 |
| 1992 | 694224000000 | 9.7 |
12.8 |
| 1993 | 725846400000 | 66.2 |
31.1 |
| 1994 | 757382400000 | 17.0 |
31.0 |
| 1995 | 788918400000 | 135.5 |
72.9 |
| 1996 | 820454400000 | 88.9 |
80.5 |
| 1997 | 852076800000 | 106.5 |
110.3 |
| 1998 | 883612800000 | 122.6 |
106.0 |
| 1999 | 915148800000 | 67.3 |
98.8 |
| 2000 | 946684800000 | 44.9 |
78.2 |
| 2001 | 978307200000 | 24.6 |
45.6 |
| 2002 | 1009843200000 | 22.0 |
30.5 |
| 2003 | 1041379200000 | 38.4 |
28.3 |
| 2004 | 1072915200000 | 29.1 |
29.8 |
| 2005 | 1104537600000 | 121.2 |
62.9 |
| 2006 | 1136073600000 | 143.8 |
98.0 |
| 2007 | 1167609600000 | 11.9 |
92.3 |
| 2008 | 1199145600000 | 28.9 |
61.6 |
| 2009 | 1230768000000 | 44.8 |
28.5 |
| 2010 | 1262304000000 | 64.4 |
46.1 |
| 2011 | 1293840000000 | 119.7 |
76.3 |
| 2012 | 1325376000000 | 8.4 |
64.2 |
| 2013 | 1356998400000 | 12.0 |
46.7 |
| 2014 | 1388534400000 | 7.4 |
9.3 |
| 2015 | 1420070400000 | 9.9 |
9.8 |
| 2016 | 1451606400000 | 40.7 |
19.3 |
| 2017 | 1483228800000 | 207.6 |
86.1 |
| 2018 | 1514764800000 | 54.6 |
101.0 |
| 2019 | 1546300800000 | 104.8 |
122.3 |
| 2020 | 1577836800000 | 15.8 |
58.4 |
| 2021 | 1609459200000 | 8.6 |
43.1 |
| 2022 | 1640995200000 | 15.2 |
13.2 |
| 2023 | 1672531200000 | 255.7 |
93.2 |
| 2024 | 1704067200000 | 47.5 |
106.1 |
| 2025 | 1735689600000 | 26.6 |
109.9 |
| 2026 | 1767225600000 |
55.2 |
43.1 |
|