|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1929 | -1293840000000 | 108.3 |
|
| 1930 | -1262304000000 | 184.4 |
|
| 1931 | -1230768000000 | 87.4 |
126.7 |
| 1932 | -1199232000000 | 155.1 |
142.3 |
| 1933 | -1167609600000 | 108.9 |
117.2 |
| 1934 | -1136073600000 | 119.9 |
128.0 |
| 1935 | -1104537600000 | 209.8 |
146.2 |
| 1936 | -1073001600000 | 196.0 |
175.2 |
| 1937 | -1041379200000 | 158.9 |
188.2 |
| 1938 | -1009843200000 | 410.1 |
255.0 |
| 1939 | -978307200000 | 112.9 |
227.3 |
| 1940 | -946771200000 | 282.2 |
268.4 |
| 1941 | -915148800000 | 338.3 |
244.5 |
| 1942 | -883612800000 | 320.8 |
313.8 |
| 1943 | -852076800000 | 270.2 |
309.8 |
| 1944 | -820540800000 | 143.4 |
244.8 |
| 1945 | -788918400000 | 188.8 |
200.8 |
| 1946 | -757382400000 | 213.0 |
181.8 |
| 1947 | -725846400000 | 138.9 |
180.2 |
| 1948 | -694310400000 | 224.9 |
192.2 |
| 1949 | -662688000000 | 141.0 |
168.2 |
| 1950 | -631152000000 | 182.0 |
182.6 |
| 1951 | -599616000000 | 248.1 |
190.4 |
| 1952 | -568080000000 | 323.1 |
251.1 |
| 1953 | -536457600000 | 252.1 |
274.4 |
| 1954 | -504921600000 | 230.5 |
268.5 |
| 1955 | -473385600000 | 146.3 |
209.6 |
| 1956 | -441849600000 | 357.8 |
244.9 |
| 1957 | -410227200000 | 186.2 |
230.1 |
| 1958 | -378691200000 | 353.6 |
299.2 |
| 1959 | -347155200000 | 163.2 |
234.3 |
| 1960 | -315619200000 | 160.0 |
225.6 |
| 1961 | -283996800000 | 178.6 |
167.2 |
| 1962 | -252460800000 | 177.6 |
172.0 |
| 1963 | -220924800000 | 293.3 |
216.5 |
| 1964 | -189388800000 | 136.4 |
202.4 |
| 1965 | -157766400000 | 312.4 |
247.4 |
| 1966 | -126230400000 | 159.4 |
202.7 |
| 1967 | -94694400000 | 293.7 |
255.2 |
| 1968 | -63158400000 | 187.0 |
213.4 |
| 1969 | -31536000000 | 330.6 |
270.4 |
| 1970 | 0000 | 324.0 |
280.6 |
| 1971 | 31536000000 | 266.3 |
307.0 |
| 1972 | 63072000000 | 164.1 |
251.5 |
| 1973 | 94694400000 | 241.7 |
224.0 |
| 1974 | 126230400000 | 416.6 |
274.1 |
| 1975 | 157766400000 | 242.2 |
300.2 |
| 1976 | 189302400000 | 120.6 |
259.8 |
| 1977 | 220924800000 | 67.7 |
143.5 |
| 1978 | 252460800000 | 287.7 |
158.7 |
| 1979 | 283996800000 | 159.7 |
171.7 |
| 1980 | 315532800000 | 272.9 |
240.1 |
| 1981 | 347155200000 | 149.5 |
194.0 |
| 1982 | 378691200000 | 351.4 |
257.9 |
| 1983 | 410227200000 | 404.1 |
301.7 |
| 1984 | 441763200000 | 270.2 |
341.9 |
| 1985 | 473385600000 | 138.8 |
271.0 |
| 1986 | 504921600000 | 291.4 |
233.5 |
| 1987 | 536457600000 | 147.8 |
192.7 |
| 1988 | 567993600000 | 131.8 |
190.3 |
| 1989 | 599616000000 | 188.3 |
156.0 |
| 1990 | 631152000000 | 125.0 |
148.4 |
| 1991 | 662688000000 | 118.1 |
143.8 |
| 1992 | 694224000000 | 121.0 |
121.3 |
| 1993 | 725846400000 | 277.8 |
172.3 |
| 1994 | 757382400000 | 123.0 |
173.9 |
| 1995 | 788918400000 | 379.8 |
260.2 |
| 1996 | 820454400000 | 253.8 |
252.2 |
| 1997 | 852076800000 | 301.5 |
311.7 |
| 1998 | 883612800000 | 368.8 |
308.1 |
| 1999 | 915148800000 | 249.4 |
306.6 |
| 2000 | 946684800000 | 226.4 |
281.5 |
| 2001 | 978307200000 | 134.8 |
203.5 |
| 2002 | 1009843200000 | 180.0 |
180.4 |
| 2003 | 1041379200000 | 285.5 |
200.1 |
| 2004 | 1072915200000 | 228.4 |
231.3 |
| 2005 | 1104537600000 | 194.0 |
236.0 |
| 2006 | 1136073600000 | 397.6 |
273.4 |
| 2007 | 1167609600000 | 146.2 |
245.9 |
| 2008 | 1199145600000 | 148.6 |
230.8 |
| 2009 | 1230768000000 | 165.2 |
153.3 |
| 2010 | 1262304000000 | 212.9 |
175.6 |
| 2011 | 1293840000000 | 301.2 |
226.5 |
| 2012 | 1325376000000 | 160.5 |
224.9 |
| 2013 | 1356998400000 | 174.1 |
212.0 |
| 2014 | 1388534400000 | 108.2 |
147.6 |
| 2015 | 1420070400000 | 130.9 |
137.7 |
| 2016 | 1451606400000 | 237.1 |
158.7 |
| 2017 | 1483228800000 | 427.3 |
265.1 |
| 2018 | 1514764800000 | 179.0 |
281.1 |
| 2019 | 1546300800000 | 322.3 |
309.5 |
| 2020 | 1577836800000 | 121.2 |
207.5 |
| 2021 | 1609459200000 | 93.3 |
178.9 |
| 2022 | 1640995200000 | 142.5 |
119.0 |
| 2023 | 1672531200000 | 286.6 |
174.1 |
| 2024 | 1704067200000 | 232.9 |
220.7 |
| 2025 | 1735689600000 | 331.3 |
283.6 |
| 2026 | 1767225600000 |
319.5 |
294.6 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1929 | -1293840000000 | 45.6 |
|
| 1930 | -1262304000000 | 63.0 |
|
| 1931 | -1230768000000 | 30.1 |
46.2 |
| 1932 | -1199232000000 | 71.4 |
54.8 |
| 1933 | -1167609600000 | 54.5 |
52.0 |
| 1934 | -1136073600000 | 37.0 |
54.3 |
| 1935 | -1104537600000 | 108.7 |
66.7 |
| 1936 | -1073001600000 | 78.4 |
74.7 |
| 1937 | -1041379200000 | 82.1 |
89.7 |
| 1938 | -1009843200000 | 155.2 |
105.2 |
| 1939 | -978307200000 | 41.9 |
93.1 |
| 1940 | -946771200000 | 84.5 |
93.9 |
| 1941 | -915148800000 | 127.9 |
84.7 |
| 1942 | -883612800000 | 121.2 |
111.2 |
| 1943 | -852076800000 | 103.7 |
117.6 |
| 1944 | -820540800000 | 62.9 |
95.9 |
| 1945 | -788918400000 | 77.8 |
81.5 |
| 1946 | -757382400000 | 80.5 |
73.7 |
| 1947 | -725846400000 | 52.1 |
70.2 |
| 1948 | -694310400000 | 128.6 |
87.1 |
| 1949 | -662688000000 | 62.7 |
81.1 |
| 1950 | -631152000000 | 87.6 |
92.9 |
| 1951 | -599616000000 | 79.1 |
76.5 |
| 1952 | -568080000000 | 147.1 |
104.6 |
| 1953 | -536457600000 | 101.3 |
109.2 |
| 1954 | -504921600000 | 103.4 |
117.3 |
| 1955 | -473385600000 | 64.7 |
89.8 |
| 1956 | -441849600000 | 115.1 |
94.4 |
| 1957 | -410227200000 | 79.2 |
86.3 |
| 1958 | -378691200000 | 148.0 |
114.1 |
| 1959 | -347155200000 | 54.2 |
93.8 |
| 1960 | -315619200000 | 66.2 |
89.5 |
| 1961 | -283996800000 | 69.9 |
63.4 |
| 1962 | -252460800000 | 70.8 |
69.0 |
| 1963 | -220924800000 | 114.8 |
85.2 |
| 1964 | -189388800000 | 53.9 |
79.8 |
| 1965 | -157766400000 | 105.9 |
91.5 |
| 1966 | -126230400000 | 67.5 |
75.8 |
| 1967 | -94694400000 | 137.7 |
103.7 |
| 1968 | -63158400000 | 57.0 |
87.4 |
| 1969 | -31536000000 | 127.9 |
107.5 |
| 1970 | 0000 | 71.3 |
85.4 |
| 1971 | 31536000000 | 99.9 |
99.7 |
| 1972 | 63072000000 | 65.5 |
78.9 |
| 1973 | 94694400000 | 85.6 |
83.6 |
| 1974 | 126230400000 | 130.3 |
93.8 |
| 1975 | 157766400000 | 113.6 |
109.8 |
| 1976 | 189302400000 | 43.4 |
95.8 |
| 1977 | 220924800000 | 24.5 |
60.5 |
| 1978 | 252460800000 | 109.0 |
59.0 |
| 1979 | 283996800000 | 68.4 |
67.3 |
| 1980 | 315532800000 | 77.4 |
84.9 |
| 1981 | 347155200000 | 49.5 |
65.1 |
| 1982 | 378691200000 | 125.8 |
84.2 |
| 1983 | 410227200000 | 148.0 |
107.7 |
| 1984 | 441763200000 | 78.4 |
117.4 |
| 1985 | 473385600000 | 50.2 |
92.2 |
| 1986 | 504921600000 | 77.0 |
68.5 |
| 1987 | 536457600000 | 49.0 |
58.7 |
| 1988 | 567993600000 | 46.6 |
57.5 |
| 1989 | 599616000000 | 68.7 |
54.8 |
| 1990 | 631152000000 | 45.7 |
53.7 |
| 1991 | 662688000000 | 49.4 |
54.6 |
| 1992 | 694224000000 | 41.0 |
45.4 |
| 1993 | 725846400000 | 119.6 |
70.0 |
| 1994 | 757382400000 | 43.0 |
67.9 |
| 1995 | 788918400000 | 153.7 |
105.4 |
| 1996 | 820454400000 | 99.0 |
98.6 |
| 1997 | 852076800000 | 65.4 |
106.0 |
| 1998 | 883612800000 | 157.3 |
107.2 |
| 1999 | 915148800000 | 91.2 |
104.6 |
| 2000 | 946684800000 | 77.8 |
108.7 |
| 2001 | 978307200000 | 47.7 |
72.2 |
| 2002 | 1009843200000 | 65.7 |
63.7 |
| 2003 | 1041379200000 | 120.9 |
78.1 |
| 2004 | 1072915200000 | 77.4 |
88.0 |
| 2005 | 1104537600000 | 91.7 |
96.7 |
| 2006 | 1136073600000 | 162.3 |
110.5 |
| 2007 | 1167609600000 | 45.9 |
100.0 |
| 2008 | 1199145600000 | 58.2 |
88.8 |
| 2009 | 1230768000000 | 62.1 |
55.4 |
| 2010 | 1262304000000 | 101.1 |
73.8 |
| 2011 | 1293840000000 | 141.4 |
101.5 |
| 2012 | 1325376000000 | 72.9 |
105.2 |
| 2013 | 1356998400000 | 48.2 |
87.5 |
| 2014 | 1388534400000 | 36.5 |
52.6 |
| 2015 | 1420070400000 | 27.6 |
37.4 |
| 2016 | 1451606400000 | 74.0 |
46.0 |
| 2017 | 1483228800000 | 130.6 |
77.4 |
| 2018 | 1514764800000 | 67.7 |
90.7 |
| 2019 | 1546300800000 | 136.3 |
111.5 |
| 2020 | 1577836800000 | 48.6 |
84.2 |
| 2021 | 1609459200000 | 32.3 |
72.4 |
| 2022 | 1640995200000 | 48.7 |
43.2 |
| 2023 | 1672531200000 | 130.1 |
70.4 |
| 2024 | 1704067200000 | 93.3 |
90.7 |
| 2025 | 1735689600000 | 93.6 |
105.7 |
| 2026 | 1767225600000 |
80.5 |
89.1 |
|