|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1945 | -788918400000 | 627.9 |
|
| 1946 | -757382400000 | 839.0 |
|
| 1947 | -725846400000 | 459.3 |
642.1 |
| 1948 | -694310400000 | 770.3 |
689.5 |
| 1949 | -662688000000 | 641.6 |
623.7 |
| 1950 | -631152000000 | 502.8 |
638.2 |
| 1951 | -599616000000 | 929.6 |
691.3 |
| 1952 | -568080000000 | 1089.0 |
840.5 |
| 1953 | -536457600000 | 933.9 |
984.2 |
| 1954 | -504921600000 | 971.3 |
998.1 |
| 1955 | -473385600000 | 497.8 |
801.0 |
| 1956 | -441849600000 | 1223.4 |
897.5 |
| 1957 | -410227200000 | 753.3 |
824.8 |
| 1958 | -378691200000 | 1766.9 |
1247.9 |
| 1959 | -347155200000 | 678.9 |
1066.4 |
| 1960 | -315619200000 | 616.2 |
1020.7 |
| 1961 | -283996800000 | 827.5 |
707.5 |
| 1962 | -252460800000 | 775.3 |
739.7 |
| 1963 | -220924800000 | 1026.5 |
876.4 |
| 1964 | -189388800000 | 437.6 |
746.5 |
| 1965 | -157766400000 | 899.7 |
787.9 |
| 1966 | -126230400000 | 864.9 |
734.1 |
| 1967 | -94694400000 | 1127.9 |
964.2 |
| 1968 | -63158400000 | 541.7 |
844.8 |
| 1969 | -31536000000 | 1051.8 |
907.1 |
| 1970 | 0000 | 983.2 |
858.9 |
| 1971 | 31536000000 | 920.1 |
985.0 |
| 1972 | 63072000000 | 594.4 |
832.6 |
| 1973 | 94694400000 | 938.9 |
817.8 |
| 1974 | 126230400000 | 1791.6 |
1108.3 |
| 1975 | 157766400000 | 914.9 |
1215.1 |
| 1976 | 189302400000 | 365.0 |
1023.8 |
| 1977 | 220924800000 | 164.9 |
481.6 |
| 1978 | 252460800000 | 1390.2 |
640.0 |
| 1979 | 283996800000 | 543.0 |
699.4 |
| 1980 | 315532800000 | 848.7 |
927.3 |
| 1981 | 347155200000 | 581.9 |
657.9 |
| 1982 | 378691200000 | 1312.1 |
914.2 |
| 1983 | 410227200000 | 1965.5 |
1286.5 |
| 1984 | 441763200000 | 881.0 |
1386.2 |
| 1985 | 473385600000 | 465.3 |
1103.9 |
| 1986 | 504921600000 | 965.8 |
770.7 |
| 1987 | 536457600000 | 505.5 |
645.5 |
| 1988 | 567993600000 | 516.6 |
662.6 |
| 1989 | 599616000000 | 638.4 |
553.5 |
| 1990 | 631152000000 | 534.7 |
563.2 |
| 1991 | 662688000000 | 308.3 |
493.8 |
| 1992 | 694224000000 | 618.0 |
487.0 |
| 1993 | 725846400000 | 1069.2 |
665.2 |
| 1994 | 757382400000 | 365.9 |
684.3 |
| 1995 | 788918400000 | 1549.7 |
994.9 |
| 1996 | 820454400000 | 852.2 |
922.6 |
| 1997 | 852076800000 | 1011.7 |
1137.9 |
| 1998 | 883612800000 | 1845.5 |
1236.5 |
| 1999 | 915148800000 | 891.5 |
1249.6 |
| 2000 | 946684800000 | 1153.6 |
1296.9 |
| 2001 | 978307200000 | 552.5 |
865.8 |
| 2002 | 1009843200000 | 732.7 |
812.9 |
| 2003 | 1041379200000 | 1173.0 |
819.4 |
| 2004 | 1072915200000 | 928.7 |
944.8 |
| 2005 | 1104537600000 | 1019.1 |
1040.3 |
| 2006 | 1136073600000 | 1628.0 |
1192.0 |
| 2007 | 1167609600000 | 475.3 |
1040.8 |
| 2008 | 1199145600000 | 520.8 |
874.7 |
| 2009 | 1230768000000 | 717.8 |
571.3 |
| 2010 | 1262304000000 | 1122.5 |
787.0 |
| 2011 | 1293840000000 | 1166.0 |
1002.1 |
| 2012 | 1325376000000 | 621.9 |
970.1 |
| 2013 | 1356998400000 | 522.9 |
770.3 |
| 2014 | 1388534400000 | 275.8 |
473.6 |
| 2015 | 1420070400000 | 613.9 |
470.9 |
| 2016 | 1451606400000 | 881.6 |
590.4 |
| 2017 | 1483228800000 | 1549.3 |
1014.9 |
| 2018 | 1514764800000 | 360.4 |
930.4 |
| 2019 | 1546300800000 | 1139.3 |
1016.3 |
| 2020 | 1577836800000 | 388.7 |
629.4 |
| 2021 | 1609459200000 | 243.9 |
590.6 |
| 2022 | 1640995200000 | 327.4 |
320.0 |
| 2023 | 1672531200000 | 1006.0 |
525.8 |
| 2024 | 1704067200000 | 1000.2 |
777.9 |
| 2025 | 1735689600000 | 985.8 |
997.3 |
| 2026 | 1767225600000 |
1044.5 |
1010.2 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1945 | -788918400000 | 228.5 |
|
| 1946 | -757382400000 | 260.7 |
|
| 1947 | -725846400000 | 183.0 |
224.1 |
| 1948 | -694310400000 | 422.5 |
288.7 |
| 1949 | -662688000000 | 285.4 |
297.0 |
| 1950 | -631152000000 | 231.0 |
313.0 |
| 1951 | -599616000000 | 220.2 |
245.5 |
| 1952 | -568080000000 | 454.6 |
301.9 |
| 1953 | -536457600000 | 357.9 |
344.2 |
| 1954 | -504921600000 | 345.4 |
386.0 |
| 1955 | -473385600000 | 214.7 |
306.0 |
| 1956 | -441849600000 | 356.0 |
305.4 |
| 1957 | -410227200000 | 328.7 |
299.8 |
| 1958 | -378691200000 | 594.2 |
426.3 |
| 1959 | -347155200000 | 202.6 |
375.2 |
| 1960 | -315619200000 | 239.8 |
345.5 |
| 1961 | -283996800000 | 279.7 |
240.7 |
| 1962 | -252460800000 | 290.6 |
270.0 |
| 1963 | -220924800000 | 457.4 |
342.6 |
| 1964 | -189388800000 | 124.0 |
290.7 |
| 1965 | -157766400000 | 303.9 |
295.1 |
| 1966 | -126230400000 | 286.4 |
238.1 |
| 1967 | -94694400000 | 457.9 |
349.4 |
| 1968 | -63158400000 | 159.2 |
301.2 |
| 1969 | -31536000000 | 471.1 |
362.7 |
| 1970 | 0000 | 159.7 |
263.4 |
| 1971 | 31536000000 | 293.9 |
308.3 |
| 1972 | 63072000000 | 204.9 |
219.5 |
| 1973 | 94694400000 | 292.9 |
263.9 |
| 1974 | 126230400000 | 422.0 |
306.6 |
| 1975 | 157766400000 | 406.5 |
373.8 |
| 1976 | 189302400000 | 174.3 |
334.3 |
| 1977 | 220924800000 | 63.4 |
214.7 |
| 1978 | 252460800000 | 396.5 |
211.4 |
| 1979 | 283996800000 | 248.1 |
236.0 |
| 1980 | 315532800000 | 224.0 |
289.5 |
| 1981 | 347155200000 | 167.5 |
213.2 |
| 1982 | 378691200000 | 442.7 |
278.0 |
| 1983 | 410227200000 | 711.3 |
440.5 |
| 1984 | 441763200000 | 208.8 |
454.3 |
| 1985 | 473385600000 | 153.6 |
357.9 |
| 1986 | 504921600000 | 191.4 |
184.6 |
| 1987 | 536457600000 | 156.6 |
167.2 |
| 1988 | 567993600000 | 167.8 |
171.9 |
| 1989 | 599616000000 | 193.4 |
172.6 |
| 1990 | 631152000000 | 259.5 |
206.9 |
| 1991 | 662688000000 | 145.4 |
199.4 |
| 1992 | 694224000000 | 247.2 |
217.4 |
| 1993 | 725846400000 | 440.7 |
277.8 |
| 1994 | 757382400000 | 116.3 |
268.1 |
| 1995 | 788918400000 | 466.8 |
341.3 |
| 1996 | 820454400000 | 274.7 |
285.9 |
| 1997 | 852076800000 | 127.8 |
289.7 |
| 1998 | 883612800000 | 704.7 |
369.1 |
| 1999 | 915148800000 | 341.3 |
391.3 |
| 2000 | 946684800000 | 387.7 |
477.9 |
| 2001 | 978307200000 | 216.5 |
315.1 |
| 2002 | 1009843200000 | 213.1 |
272.4 |
| 2003 | 1041379200000 | 455.3 |
295.0 |
| 2004 | 1072915200000 | 234.4 |
300.9 |
| 2005 | 1104537600000 | 478.5 |
389.4 |
| 2006 | 1136073600000 | 751.0 |
488.0 |
| 2007 | 1167609600000 | 112.0 |
447.2 |
| 2008 | 1199145600000 | 210.7 |
357.9 |
| 2009 | 1230768000000 | 270.4 |
197.7 |
| 2010 | 1262304000000 | 520.9 |
334.0 |
| 2011 | 1293840000000 | 515.2 |
435.5 |
| 2012 | 1325376000000 | 325.7 |
453.9 |
| 2013 | 1356998400000 | 130.3 |
323.7 |
| 2014 | 1388534400000 | 90.5 |
182.2 |
| 2015 | 1420070400000 | 73.5 |
98.1 |
| 2016 | 1451606400000 | 183.9 |
116.0 |
| 2017 | 1483228800000 | 430.7 |
229.4 |
| 2018 | 1514764800000 | 130.8 |
248.4 |
| 2019 | 1546300800000 | 529.9 |
363.8 |
| 2020 | 1577836800000 | 158.2 |
272.9 |
| 2021 | 1609459200000 | 86.1 |
258.1 |
| 2022 | 1640995200000 | 89.2 |
111.2 |
| 2023 | 1672531200000 | 479.4 |
218.2 |
| 2024 | 1704067200000 | 286.4 |
285.0 |
| 2025 | 1735689600000 | 261.6 |
342.4 |
| 2026 | 1767225600000 |
263.7 |
270.5 |
|