|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1975 | 157766400000 | 293.6 |
|
| 1976 | 189302400000 | 122.8 |
|
| 1977 | 220924800000 | 67.4 |
161.3 |
| 1978 | 252460800000 | 348.4 |
179.6 |
| 1979 | 283996800000 | 248.2 |
221.4 |
| 1980 | 315532800000 | 419.8 |
338.8 |
| 1981 | 347155200000 | 154.6 |
274.2 |
| 1982 | 378691200000 | 590.0 |
388.1 |
| 1983 | 410227200000 | 572.9 |
439.2 |
| 1984 | 441763200000 | 415.6 |
526.2 |
| 1985 | 473385600000 | 200.0 |
396.1 |
| 1986 | 504921600000 | 435.3 |
350.3 |
| 1987 | 536457600000 | 123.7 |
253.0 |
| 1988 | 567993600000 | 116.0 |
225.0 |
| 1989 | 599616000000 | 297.4 |
179.0 |
| 1990 | 631152000000 | 169.3 |
194.2 |
| 1991 | 662688000000 | 164.7 |
210.5 |
| 1992 | 694224000000 | 117.2 |
150.4 |
| 1993 | 725846400000 | 373.8 |
218.6 |
| 1994 | 757382400000 | 114.7 |
201.9 |
| 1995 | 788918400000 | 554.6 |
347.7 |
| 1996 | 820454400000 | 421.1 |
363.5 |
| 1997 | 852076800000 | 488.7 |
488.2 |
| 1998 | 883612800000 | 437.4 |
449.1 |
| 1999 | 915148800000 | 333.4 |
419.9 |
| 2000 | 946684800000 | 257.8 |
342.9 |
| 2001 | 978307200000 | 126.0 |
239.1 |
| 2002 | 1009843200000 | 246.2 |
210.0 |
| 2003 | 1041379200000 | 285.1 |
219.1 |
| 2004 | 1072915200000 | 206.5 |
245.9 |
| 2005 | 1104537600000 | 359.8 |
283.8 |
| 2006 | 1136073600000 | 510.6 |
359.0 |
| 2007 | 1167609600000 | 172.7 |
347.7 |
| 2008 | 1199145600000 | 186.8 |
290.1 |
| 2009 | 1230768000000 | 281.8 |
213.8 |
| 2010 | 1262304000000 | 306.4 |
258.3 |
| 2011 | 1293840000000 | 558.2 |
382.1 |
| 2012 | 1325376000000 | 215.7 |
360.1 |
| 2013 | 1356998400000 | 248.1 |
340.7 |
| 2014 | 1388534400000 | 148.2 |
204.0 |
| 2015 | 1420070400000 | 137.3 |
177.8 |
| 2016 | 1451606400000 | 332.9 |
206.1 |
| 2017 | 1483228800000 | 798.8 |
423.0 |
| 2018 | 1514764800000 | 291.5 |
474.4 |
| 2019 | 1546300800000 | 430.1 |
506.8 |
| 2020 | 1577836800000 | 159.7 |
293.8 |
| 2021 | 1609459200000 | 116.3 |
235.4 |
| 2022 | 1640995200000 | 266.8 |
181.0 |
| 2023 | 1672531200000 | 420.7 |
268.0 |
| 2024 | 1704067200000 | 260.2 |
315.9 |
| 2025 | 1735689600000 | 251.5 |
310.8 |
| 2026 | 1767225600000 |
318.0 |
276.6 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1975 | 157766400000 | 250.2 |
|
| 1976 | 189302400000 | 62.5 |
|
| 1977 | 220924800000 | 57.2 |
123.3 |
| 1978 | 252460800000 | 242.9 |
120.9 |
| 1979 | 283996800000 | 187.7 |
162.6 |
| 1980 | 315532800000 | 234.9 |
221.8 |
| 1981 | 347155200000 | 109.1 |
177.2 |
| 1982 | 378691200000 | 285.7 |
209.9 |
| 1983 | 410227200000 | 400.0 |
264.9 |
| 1984 | 441763200000 | 196.9 |
294.2 |
| 1985 | 473385600000 | 134.9 |
243.9 |
| 1986 | 504921600000 | 197.1 |
176.3 |
| 1987 | 536457600000 | 84.0 |
138.7 |
| 1988 | 567993600000 | 65.3 |
115.5 |
| 1989 | 599616000000 | 174.9 |
108.1 |
| 1990 | 631152000000 | 106.4 |
115.6 |
| 1991 | 662688000000 | 129.4 |
136.9 |
| 1992 | 694224000000 | 65.3 |
100.3 |
| 1993 | 725846400000 | 271.9 |
155.5 |
| 1994 | 757382400000 | 80.9 |
139.4 |
| 1995 | 788918400000 | 389.7 |
247.5 |
| 1996 | 820454400000 | 261.5 |
244.0 |
| 1997 | 852076800000 | 166.5 |
272.5 |
| 1998 | 883612800000 | 322.6 |
250.2 |
| 1999 | 915148800000 | 249.0 |
246.0 |
| 2000 | 946684800000 | 169.9 |
247.1 |
| 2001 | 978307200000 | 88.4 |
169.1 |
| 2002 | 1009843200000 | 164.0 |
140.8 |
| 2003 | 1041379200000 | 185.6 |
146.0 |
| 2004 | 1072915200000 | 123.7 |
157.8 |
| 2005 | 1104537600000 | 289.5 |
199.6 |
| 2006 | 1136073600000 | 279.8 |
231.0 |
| 2007 | 1167609600000 | 94.0 |
221.1 |
| 2008 | 1199145600000 | 137.1 |
170.3 |
| 2009 | 1230768000000 | 194.3 |
141.8 |
| 2010 | 1262304000000 | 244.3 |
191.9 |
| 2011 | 1293840000000 | 392.3 |
277.0 |
| 2012 | 1325376000000 | 144.8 |
260.5 |
| 2013 | 1356998400000 | 100.2 |
212.4 |
| 2014 | 1388534400000 | 82.0 |
109.0 |
| 2015 | 1420070400000 | 42.8 |
75.0 |
| 2016 | 1451606400000 | 171.8 |
98.9 |
| 2017 | 1483228800000 | 409.8 |
208.1 |
| 2018 | 1514764800000 | 153.0 |
244.9 |
| 2019 | 1546300800000 | 323.0 |
295.3 |
| 2020 | 1577836800000 | 139.1 |
205.0 |
| 2021 | 1609459200000 | 81.6 |
181.2 |
| 2022 | 1640995200000 | 131.2 |
117.3 |
| 2023 | 1672531200000 | 313.2 |
175.3 |
| 2024 | 1704067200000 | 183.3 |
209.2 |
| 2025 | 1735689600000 | 153.0 |
216.5 |
| 2026 | 1767225600000 |
165.5 |
167.2 |
|