|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1966 | -126230400000 | 1062.4 |
|
| 1967 | -94694400000 | 1434.2 |
|
| 1968 | -63158400000 | 934.7 |
1143.7 |
| 1969 | -31536000000 | 1853.2 |
1407.3 |
| 1970 | 0000 | 1428.0 |
1405.3 |
| 1971 | 31536000000 | 1565.7 |
1615.6 |
| 1972 | 63072000000 | 820.9 |
1271.5 |
| 1973 | 94694400000 | 1285.4 |
1224.0 |
| 1974 | 126230400000 | 2339.6 |
1482.0 |
| 1975 | 157766400000 | 1295.7 |
1640.2 |
| 1976 | 189302400000 | 485.1 |
1373.5 |
| 1977 | 220924800000 | 87.8 |
622.9 |
| 1978 | 252460800000 | 1458.9 |
677.3 |
| 1979 | 283996800000 | 632.0 |
726.2 |
| 1980 | 315532800000 | 1254.4 |
1115.1 |
| 1981 | 347155200000 | 555.9 |
814.1 |
| 1982 | 378691200000 | 2013.4 |
1274.6 |
| 1983 | 410227200000 | 2426.3 |
1665.2 |
| 1984 | 441763200000 | 1277.4 |
1905.7 |
| 1985 | 473385600000 | 695.2 |
1466.3 |
| 1986 | 504921600000 | 1412.0 |
1128.2 |
| 1987 | 536457600000 | 620.5 |
909.2 |
| 1988 | 567993600000 | 612.3 |
881.6 |
| 1989 | 599616000000 | 863.8 |
698.8 |
| 1990 | 631152000000 | 411.4 |
629.1 |
| 1991 | 662688000000 | 256.6 |
510.6 |
| 1992 | 694224000000 | 427.2 |
365.1 |
| 1993 | 725846400000 | 1387.3 |
690.4 |
| 1994 | 757382400000 | 378.9 |
731.1 |
| 1995 | 788918400000 | 1793.2 |
1186.5 |
| 1996 | 820454400000 | 1200.9 |
1124.3 |
| 1997 | 852076800000 | 1504.2 |
1499.4 |
| 1998 | 883612800000 | 2142.1 |
1615.7 |
| 1999 | 915148800000 | 1265.7 |
1637.3 |
| 2000 | 946684800000 | 940.8 |
1449.5 |
| 2001 | 978307200000 | 362.5 |
856.3 |
| 2002 | 1009843200000 | 968.0 |
757.1 |
| 2003 | 1041379200000 | 1574.4 |
968.3 |
| 2004 | 1072915200000 | 1127.8 |
1223.4 |
| 2005 | 1104537600000 | 1161.7 |
1288.0 |
| 2006 | 1136073600000 | 2197.7 |
1495.8 |
| 2007 | 1167609600000 | 595.2 |
1318.2 |
| 2008 | 1199145600000 | 698.9 |
1163.9 |
| 2009 | 1230768000000 | 616.1 |
636.7 |
| 2010 | 1262304000000 | 1194.9 |
836.6 |
| 2011 | 1293840000000 | 1448.9 |
1086.6 |
| 2012 | 1325376000000 | 676.9 |
1106.9 |
| 2013 | 1356998400000 | 757.1 |
960.9 |
| 2014 | 1388534400000 | 379.1 |
604.3 |
| 2015 | 1420070400000 | 500.4 |
545.5 |
| 2016 | 1451606400000 | 1078.0 |
652.5 |
| 2017 | 1483228800000 | 2017.6 |
1198.7 |
| 2018 | 1514764800000 | 605.8 |
1233.8 |
| 2019 | 1546300800000 | 1248.4 |
1290.6 |
| 2020 | 1577836800000 | 292.7 |
715.6 |
| 2021 | 1609459200000 | 314.3 |
618.5 |
| 2022 | 1640995200000 | 686.3 |
431.1 |
| 2023 | 1672531200000 | 1409.6 |
803.4 |
| 2024 | 1704067200000 | 1393.6 |
1163.2 |
| 2025 | 1735689600000 | 1488.2 |
1430.5 |
| 2026 | 1767225600000 |
1185.6 |
1355.8 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1966 | -126230400000 | 261.8 |
|
| 1967 | -94694400000 | 406.1 |
|
| 1968 | -63158400000 | 89.3 |
252.4 |
| 1969 | -31536000000 | 388.7 |
294.7 |
| 1970 | 0000 | 62.7 |
180.2 |
| 1971 | 31536000000 | 284.3 |
245.2 |
| 1972 | 63072000000 | 166.3 |
171.1 |
| 1973 | 94694400000 | 238.7 |
229.8 |
| 1974 | 126230400000 | 375.7 |
260.2 |
| 1975 | 157766400000 | 302.2 |
305.5 |
| 1976 | 189302400000 | 130.4 |
269.4 |
| 1977 | 220924800000 | 40.4 |
157.7 |
| 1978 | 252460800000 | 280.0 |
150.3 |
| 1979 | 283996800000 | 200.7 |
173.7 |
| 1980 | 315532800000 | 173.9 |
218.2 |
| 1981 | 347155200000 | 100.3 |
158.3 |
| 1982 | 378691200000 | 587.2 |
287.1 |
| 1983 | 410227200000 | 554.5 |
414.0 |
| 1984 | 441763200000 | 168.2 |
436.6 |
| 1985 | 473385600000 | 139.4 |
287.3 |
| 1986 | 504921600000 | 123.5 |
143.7 |
| 1987 | 536457600000 | 102.0 |
121.6 |
| 1988 | 567993600000 | 71.2 |
98.9 |
| 1989 | 599616000000 | 164.3 |
112.5 |
| 1990 | 631152000000 | 146.3 |
127.3 |
| 1991 | 662688000000 | 108.5 |
139.7 |
| 1992 | 694224000000 | 119.0 |
124.6 |
| 1993 | 725846400000 | 418.6 |
215.3 |
| 1994 | 757382400000 | 84.3 |
207.3 |
| 1995 | 788918400000 | 463.3 |
322.1 |
| 1996 | 820454400000 | 318.3 |
288.6 |
| 1997 | 852076800000 | 101.7 |
294.5 |
| 1998 | 883612800000 | 473.3 |
297.8 |
| 1999 | 915148800000 | 314.7 |
296.6 |
| 2000 | 946684800000 | 155.0 |
314.3 |
| 2001 | 978307200000 | 100.3 |
190.0 |
| 2002 | 1009843200000 | 104.5 |
119.9 |
| 2003 | 1041379200000 | 512.5 |
239.1 |
| 2004 | 1072915200000 | 121.6 |
246.2 |
| 2005 | 1104537600000 | 521.8 |
385.3 |
| 2006 | 1136073600000 | 601.0 |
414.8 |
| 2007 | 1167609600000 | 93.7 |
405.5 |
| 2008 | 1199145600000 | 163.4 |
286.0 |
| 2009 | 1230768000000 | 186.6 |
147.9 |
| 2010 | 1262304000000 | 533.5 |
294.5 |
| 2011 | 1293840000000 | 452.3 |
390.8 |
| 2012 | 1325376000000 | 290.9 |
425.6 |
| 2013 | 1356998400000 | 91.4 |
278.2 |
| 2014 | 1388534400000 | 86.5 |
156.3 |
| 2015 | 1420070400000 | 27.7 |
68.5 |
| 2016 | 1451606400000 | 109.2 |
74.5 |
| 2017 | 1483228800000 | 355.7 |
164.2 |
| 2018 | 1514764800000 | 198.7 |
221.2 |
| 2019 | 1546300800000 | 388.0 |
314.1 |
| 2020 | 1577836800000 | 93.9 |
226.9 |
| 2021 | 1609459200000 | 52.9 |
178.3 |
| 2022 | 1640995200000 | 170.6 |
105.8 |
| 2023 | 1672531200000 | 462.3 |
228.6 |
| 2024 | 1704067200000 | 322.9 |
318.6 |
| 2025 | 1735689600000 | 247.0 |
344.1 |
| 2026 | 1767225600000 |
131.5 |
233.8 |
|