|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1930 | -1262304000000 | 2.8 |
|
| 1931 | -1230768000000 | 0.3 |
|
| 1932 | -1199232000000 | 57.5 |
20.2 |
| 1933 | -1167609600000 | 15.8 |
24.5 |
| 1934 | -1136073600000 | 28.5 |
33.9 |
| 1935 | -1104537600000 | 40.1 |
28.1 |
| 1936 | -1073001600000 | 24.3 |
31.0 |
| 1937 | -1041379200000 | 108.1 |
57.5 |
| 1938 | -1009843200000 | 190.2 |
107.6 |
| 1939 | -978307200000 | 19.0 |
105.8 |
| 1940 | -946771200000 | 10.9 |
73.4 |
| 1941 | -915148800000 | 256.3 |
95.4 |
| 1942 | -883612800000 | 22.2 |
96.5 |
| 1943 | -852076800000 | 136.5 |
138.4 |
| 1944 | -820540800000 | 74.8 |
77.8 |
| 1945 | -788918400000 | 30.1 |
80.5 |
| 1946 | -757382400000 | 23.3 |
42.7 |
| 1947 | -725846400000 | 11.4 |
21.6 |
| 1948 | -694310400000 | 0.0 |
11.6 |
| 1949 | -662688000000 | 0.2 |
3.9 |
| 1950 | -631152000000 | 2.7 |
1.0 |
| 1951 | -599616000000 | 0.0 |
0.9 |
| 1952 | -568080000000 | 124.9 |
42.5 |
| 1953 | -536457600000 | 8.4 |
44.4 |
| 1954 | -504921600000 | 9.2 |
47.5 |
| 1955 | -473385600000 | 0.9 |
6.2 |
| 1956 | -441849600000 | 10.0 |
6.7 |
| 1957 | -410227200000 | 2.2 |
4.4 |
| 1958 | -378691200000 | 161.2 |
57.8 |
| 1959 | -347155200000 | 6.0 |
56.4 |
| 1960 | -315619200000 | | |
|---|
| 1961 | -283996800000 | 0.2 |
|
| 1962 | -252460800000 | 59.1 |
|
| 1963 | -220924800000 | 2.6 |
20.6 |
| 1964 | -189388800000 | 0.2 |
20.6 |
| 1965 | -157766400000 | 1.8 |
1.5 |
| 1966 | -126230400000 | 36.7 |
12.9 |
| 1967 | -94694400000 | 28.0 |
22.2 |
| 1968 | -63158400000 | 5.6 |
23.4 |
| 1969 | -31536000000 | 250.1 |
94.6 |
| 1970 | 0000 | 10.0 |
88.6 |
| 1971 | 31536000000 | 11.3 |
90.5 |
| 1972 | 63072000000 | 3.0 |
8.1 |
| 1973 | 94694400000 | 47.2 |
20.5 |
| 1974 | 126230400000 | 13.5 |
21.2 |
| 1975 | 157766400000 | 13.4 |
24.7 |
| 1976 | 189302400000 | 1.4 |
9.4 |
| 1977 | 220924800000 | 0.8 |
5.2 |
| 1978 | 252460800000 | 237.3 |
79.8 |
| 1979 | 283996800000 | 31.1 |
89.8 |
| 1980 | 315532800000 | 131.1 |
133.2 |
| 1981 | 347155200000 | 7.8 |
56.7 |
| 1982 | 378691200000 | 3.8 |
47.6 |
| 1983 | 410227200000 | 214.8 |
75.5 |
| 1984 | 441763200000 | 28.1 |
82.2 |
| 1985 | 473385600000 | 2.8 |
81.9 |
| 1986 | 504921600000 | 45.1 |
25.4 |
| 1987 | 536457600000 | 2.8 |
16.9 |
| 1988 | 567993600000 | 4.5 |
17.5 |
| 1989 | 599616000000 | 1.4 |
2.9 |
| 1990 | 631152000000 | 0.4 |
2.1 |
| 1991 | 662688000000 | 19.1 |
7.0 |
| 1992 | 694224000000 | 52.2 |
23.9 |
| 1993 | 725846400000 | 199.6 |
90.3 |
| 1994 | 757382400000 | 6.0 |
85.9 |
| 1995 | 788918400000 | 277.1 |
160.9 |
| 1996 | 820454400000 | 12.4 |
98.5 |
| 1997 | 852076800000 | 19.1 |
102.9 |
| 1998 | 883612800000 | 264.3 |
98.6 |
| 1999 | 915148800000 | 12.0 |
98.5 |
| 2000 | 946684800000 | 18.1 |
98.1 |
| 2001 | 978307200000 | 73.9 |
34.7 |
| 2002 | 1009843200000 | 2.8 |
31.6 |
| 2003 | 1041379200000 | 10.9 |
29.2 |
| 2004 | 1072915200000 | 5.5 |
6.4 |
| 2005 | 1104537600000 | 234.0 |
83.5 |
| 2006 | 1136073600000 | 52.4 |
97.3 |
| 2007 | 1167609600000 | 5.5 |
97.3 |
| 2008 | 1199145600000 | 53.0 |
37.0 |
| 2009 | 1230768000000 | 5.5 |
21.3 |
| 2010 | 1262304000000 | 21.5 |
26.7 |
| 2011 | 1293840000000 | 51.2 |
26.1 |
| 2012 | 1325376000000 | 4.8 |
25.9 |
| 2013 | 1356998400000 | 0.4 |
18.8 |
| 2014 | 1388534400000 | 1.6 |
2.3 |
| 2015 | 1420070400000 | 0.8 |
0.9 |
| 2016 | 1451606400000 | 0.6 |
1.0 |
| 2017 | 1483228800000 | 34.9 |
12.1 |
| 2018 | 1514764800000 | 8.4 |
14.6 |
| 2019 | 1546300800000 | 63.3 |
35.5 |
| 2020 | 1577836800000 | 14.9 |
28.9 |
| 2021 | 1609459200000 | 1.7 |
26.6 |
| 2022 | 1640995200000 | 7.2 |
7.9 |
| 2023 | 1672531200000 | 164.7 |
57.8 |
| 2024 | 1704067200000 | 81.2 |
84.3 |
| 2025 | 1735689600000 | 9.5 |
85.1 |
| 2026 | 1767225600000 |
102.1 |
64.3 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1930 | -1262304000000 | 0.3 |
|
| 1931 | -1230768000000 | 0.0 |
|
| 1932 | -1199232000000 | 2.4 |
0.9 |
| 1933 | -1167609600000 | 0.6 |
1.0 |
| 1934 | -1136073600000 | 0.3 |
1.1 |
| 1935 | -1104537600000 | 13.0 |
4.6 |
| 1936 | -1073001600000 | 2.8 |
5.4 |
| 1937 | -1041379200000 | 17.9 |
11.2 |
| 1938 | -1009843200000 | 23.1 |
14.6 |
| 1939 | -978307200000 | 2.6 |
14.6 |
| 1940 | -946771200000 | 2.1 |
9.3 |
| 1941 | -915148800000 | 75.5 |
26.7 |
| 1942 | -883612800000 | 7.8 |
28.5 |
| 1943 | -852076800000 | 14.7 |
32.7 |
| 1944 | -820540800000 | 12.5 |
11.7 |
| 1945 | -788918400000 | 5.6 |
10.9 |
| 1946 | -757382400000 | 7.2 |
8.4 |
| 1947 | -725846400000 | 0.8 |
4.5 |
| 1948 | -694310400000 | 0.0 |
2.7 |
| 1949 | -662688000000 | 0.0 |
0.3 |
| 1950 | -631152000000 | 0.2 |
0.1 |
| 1951 | -599616000000 | 0.0 |
0.1 |
| 1952 | -568080000000 | 11.8 |
4.0 |
| 1953 | -536457600000 | 0.2 |
4.0 |
| 1954 | -504921600000 | 1.8 |
4.6 |
| 1955 | -473385600000 | 0.4 |
0.8 |
| 1956 | -441849600000 | 1.4 |
1.2 |
| 1957 | -410227200000 | 0.4 |
0.7 |
| 1958 | -378691200000 | 93.2 |
31.7 |
| 1959 | -347155200000 | 0.5 |
31.4 |
| 1960 | -315619200000 | | |
|---|
| 1961 | -283996800000 | 0.0 |
|
| 1962 | -252460800000 | 1.5 |
|
| 1963 | -220924800000 | 1.0 |
0.8 |
| 1964 | -189388800000 | 0.1 |
0.8 |
| 1965 | -157766400000 | 1.6 |
0.9 |
| 1966 | -126230400000 | 1.4 |
1.0 |
| 1967 | -94694400000 | 8.0 |
3.6 |
| 1968 | -63158400000 | 1.3 |
3.6 |
| 1969 | -31536000000 | 9.3 |
6.2 |
| 1970 | 0000 | 1.8 |
4.1 |
| 1971 | 31536000000 | 1.9 |
4.3 |
| 1972 | 63072000000 | 0.1 |
1.3 |
| 1973 | 94694400000 | 4.1 |
2.1 |
| 1974 | 126230400000 | 2.9 |
2.4 |
| 1975 | 157766400000 | 2.6 |
3.2 |
| 1976 | 189302400000 | 0.3 |
1.9 |
| 1977 | 220924800000 | 0.1 |
1.0 |
| 1978 | 252460800000 | 41.1 |
13.8 |
| 1979 | 283996800000 | 11.9 |
17.7 |
| 1980 | 315532800000 | 14.9 |
22.6 |
| 1981 | 347155200000 | 1.9 |
9.6 |
| 1982 | 378691200000 | 2.5 |
6.4 |
| 1983 | 410227200000 | 64.3 |
22.9 |
| 1984 | 441763200000 | 1.3 |
22.7 |
| 1985 | 473385600000 | 0.5 |
22.0 |
| 1986 | 504921600000 | 4.7 |
2.2 |
| 1987 | 536457600000 | 0.6 |
2.0 |
| 1988 | 567993600000 | 0.9 |
2.1 |
| 1989 | 599616000000 | 0.5 |
0.7 |
| 1990 | 631152000000 | 0.0 |
0.5 |
| 1991 | 662688000000 | 2.0 |
0.8 |
| 1992 | 694224000000 | 2.9 |
1.6 |
| 1993 | 725846400000 | 27.2 |
10.7 |
| 1994 | 757382400000 | 0.9 |
10.4 |
| 1995 | 788918400000 | 40.3 |
22.8 |
| 1996 | 820454400000 | 1.8 |
14.3 |
| 1997 | 852076800000 | 2.2 |
14.7 |
| 1998 | 883612800000 | 62.7 |
22.2 |
| 1999 | 915148800000 | 3.8 |
22.9 |
| 2000 | 946684800000 | 6.6 |
24.4 |
| 2001 | 978307200000 | 9.1 |
6.5 |
| 2002 | 1009843200000 | 0.8 |
5.5 |
| 2003 | 1041379200000 | 5.5 |
5.1 |
| 2004 | 1072915200000 | 0.9 |
2.4 |
| 2005 | 1104537600000 | 18.8 |
8.4 |
| 2006 | 1136073600000 | 34.9 |
18.2 |
| 2007 | 1167609600000 | 1.6 |
18.4 |
| 2008 | 1199145600000 | 4.7 |
13.7 |
| 2009 | 1230768000000 | 1.9 |
2.7 |
| 2010 | 1262304000000 | 5.5 |
4.0 |
| 2011 | 1293840000000 | 9.8 |
5.7 |
| 2012 | 1325376000000 | 1.7 |
5.7 |
| 2013 | 1356998400000 | 0.3 |
3.9 |
| 2014 | 1388534400000 | 0.0 |
0.7 |
| 2015 | 1420070400000 | 0.6 |
0.3 |
| 2016 | 1451606400000 | 0.4 |
0.3 |
| 2017 | 1483228800000 | 3.0 |
1.3 |
| 2018 | 1514764800000 | 0.9 |
1.4 |
| 2019 | 1546300800000 | 6.9 |
3.6 |
| 2020 | 1577836800000 | 8.1 |
5.3 |
| 2021 | 1609459200000 | 0.6 |
5.2 |
| 2022 | 1640995200000 | 1.4 |
3.4 |
| 2023 | 1672531200000 | 19.8 |
7.3 |
| 2024 | 1704067200000 | 23.7 |
14.9 |
| 2025 | 1735689600000 | 2.6 |
15.3 |
| 2026 | 1767225600000 |
7.7 |
11.3 |
|