|
| Rank | Year | | Annual Flow | 3-Year Mean |
| 1921 | -1546300800000 | 408.5 |
|
| 1922 | -1514764800000 | 193.3 |
|
| 1923 | -1483228800000 | 142.6 |
248.1 |
| 1924 | -1451692800000 | 32.6 |
122.8 |
| 1925 | -1420070400000 | 284.0 |
153.1 |
| 1926 | -1388534400000 | 144.5 |
153.7 |
| 1927 | -1356998400000 | 337.4 |
255.3 |
| 1928 | -1325462400000 | 256.4 |
246.1 |
| 1929 | -1293840000000 | 55.5 |
216.4 |
| 1930 | -1262304000000 | 142.3 |
151.4 |
| 1931 | -1230768000000 | 53.7 |
83.8 |
| 1932 | -1199232000000 | 113.3 |
103.1 |
| 1933 | -1167609600000 | 88.3 |
85.1 |
| 1934 | -1136073600000 | 74.4 |
92.0 |
| 1935 | -1104537600000 | 154.0 |
105.6 |
| 1936 | -1073001600000 | 190.0 |
139.5 |
| 1937 | -1041379200000 | 112.2 |
152.1 |
| 1938 | -1009843200000 | 443.4 |
248.6 |
| 1939 | -978307200000 | 64.7 |
206.8 |
| 1940 | -946771200000 | 285.1 |
264.4 |
| 1941 | -915148800000 | 431.8 |
260.5 |
| 1942 | -883612800000 | 289.1 |
335.3 |
| 1943 | -852076800000 | 201.6 |
307.5 |
| 1944 | -820540800000 | 66.6 |
185.8 |
| 1945 | -788918400000 | 122.8 |
130.3 |
| 1946 | -757382400000 | 200.7 |
130.0 |
| 1947 | -725846400000 | 80.1 |
134.5 |
| 1948 | -694310400000 | 141.0 |
140.6 |
| 1949 | -662688000000 | 132.7 |
117.9 |
| 1950 | -631152000000 | 130.4 |
134.7 |
| 1951 | -599616000000 | 220.6 |
161.2 |
| 1952 | -568080000000 | 321.6 |
224.2 |
| 1953 | -536457600000 | 251.9 |
264.7 |
| 1954 | -504921600000 | 237.0 |
270.2 |
| 1955 | -473385600000 | 95.5 |
194.8 |
| 1956 | -441849600000 | 434.1 |
255.5 |
| 1957 | -410227200000 | 141.2 |
223.6 |
| 1958 | -378691200000 | 456.4 |
343.9 |
| 1959 | -347155200000 | 114.2 |
237.2 |
| 1960 | -315619200000 | 157.4 |
242.7 |
| 1961 | -283996800000 | 138.4 |
136.7 |
| 1962 | -252460800000 | 115.5 |
137.1 |
| 1963 | -220924800000 | 271.5 |
175.1 |
| 1964 | -189388800000 | 78.2 |
155.1 |
| 1965 | -157766400000 | 407.2 |
252.3 |
| 1966 | -126230400000 | 183.0 |
222.8 |
| 1967 | -94694400000 | 275.6 |
288.6 |
| 1968 | -63158400000 | 190.2 |
216.3 |
| 1969 | -31536000000 | 436.3 |
300.7 |
| 1970 | 0000 | 317.9 |
314.8 |
| 1971 | 31536000000 | 307.1 |
353.7 |
| 1972 | 63072000000 | 137.8 |
254.2 |
| 1973 | 94694400000 | 262.0 |
235.6 |
| 1974 | 126230400000 | 450.0 |
283.3 |
| 1975 | 157766400000 | 277.7 |
329.9 |
| 1976 | 189302400000 | 65.9 |
264.5 |
| 1977 | 220924800000 | 15.6 |
119.7 |
| 1978 | 252460800000 | 343.4 |
141.6 |
| 1979 | 283996800000 | 110.1 |
156.4 |
| 1980 | 315532800000 | 295.4 |
249.6 |
| 1981 | 347155200000 | 125.9 |
177.1 |
| 1982 | 378691200000 | 395.9 |
272.4 |
| 1983 | 410227200000 | 559.3 |
360.3 |
| 1984 | 441763200000 | 265.8 |
407.0 |
| 1985 | 473385600000 | 134.4 |
319.8 |
| 1986 | 504921600000 | 352.0 |
250.7 |
| 1987 | 536457600000 | 102.1 |
196.2 |
| 1988 | 567993600000 | 137.7 |
197.3 |
| 1989 | 599616000000 | 158.9 |
132.9 |
| 1990 | 631152000000 | 74.5 |
123.7 |
| 1991 | 662688000000 | 80.6 |
104.7 |
| 1992 | 694224000000 | 119.2 |
91.4 |
| 1993 | 725846400000 | 318.7 |
172.8 |
| 1994 | 757382400000 | 57.0 |
165.0 |
| 1995 | 788918400000 | 459.0 |
278.3 |
| 1996 | 820454400000 | 325.1 |
280.4 |
| 1997 | 852076800000 | | |
|---|
| 1998 | 883612800000 | | |
|---|
| 1999 | 915148800000 | | |
|---|
| 2000 | 946684800000 | | |
|---|
| 2001 | 978307200000 | | |
|---|
| 2002 | 1009843200000 | | |
|---|
| 2003 | 1041379200000 | | |
|---|
| 2004 | 1072915200000 | | |
|---|
| 2005 | 1104537600000 | | |
|---|
| 2006 | 1136073600000 | | |
|---|
| 2007 | 1167609600000 | | |
|---|
| 2008 | 1199145600000 | | |
|---|
| 2009 | 1230768000000 | | |
|---|
| 2010 | 1262304000000 | | |
|---|
| 2011 | 1293840000000 | | |
|---|
| 2012 | 1325376000000 | | |
|---|
| 2013 | 1356998400000 | 107.1 |
|
| 2014 | 1388534400000 | 57.5 |
|
| 2015 | 1420070400000 | 90.2 |
84.9 |
| 2016 | 1451606400000 | 183.1 |
110.3 |
| 2017 | 1483228800000 | 342.9 |
205.4 |
| 2018 | 1514764800000 | 54.7 |
193.6 |
| 2019 | 1546300800000 | 200.2 |
199.3 |
| 2020 | 1577836800000 | 43.5 |
99.5 |
| 2021 | 1609459200000 | 19.3 |
87.7 |
| 2022 | 1640995200000 | 82.0 |
48.3 |
| 2023 | 1672531200000 | 267.6 |
122.9 |
| 2024 | 1704067200000 | 169.2 |
172.9 |
| 2025 | 1735689600000 | 319.8 |
252.2 |
| 2026 | 1767225600000 |
201.6 |
230.2 |
| Rank | Year | | Seasonal Flow | 3-Year Mean |
| 1921 | -1546300800000 | 59.8 |
|
| 1922 | -1514764800000 | 104.7 |
|
| 1923 | -1483228800000 | 52.9 |
72.5 |
| 1924 | -1451692800000 | 3.9 |
53.8 |
| 1925 | -1420070400000 | 103.4 |
53.4 |
| 1926 | -1388534400000 | 40.0 |
49.1 |
| 1927 | -1356998400000 | 89.5 |
77.6 |
| 1928 | -1325462400000 | 61.4 |
63.6 |
| 1929 | -1293840000000 | 19.3 |
56.7 |
| 1930 | -1262304000000 | 29.8 |
36.8 |
| 1931 | -1230768000000 | 11.6 |
20.2 |
| 1932 | -1199232000000 | 40.2 |
27.2 |
| 1933 | -1167609600000 | 62.5 |
38.1 |
| 1934 | -1136073600000 | 15.7 |
39.5 |
| 1935 | -1104537600000 | 81.6 |
53.3 |
| 1936 | -1073001600000 | 38.2 |
45.1 |
| 1937 | -1041379200000 | 80.5 |
66.8 |
| 1938 | -1009843200000 | 184.2 |
101.0 |
| 1939 | -978307200000 | 18.8 |
94.5 |
| 1940 | -946771200000 | 58.0 |
87.0 |
| 1941 | -915148800000 | 145.5 |
74.1 |
| 1942 | -883612800000 | 86.2 |
96.6 |
| 1943 | -852076800000 | 37.9 |
89.9 |
| 1944 | -820540800000 | 33.0 |
52.4 |
| 1945 | -788918400000 | 43.5 |
38.1 |
| 1946 | -757382400000 | 49.1 |
41.8 |
| 1947 | -725846400000 | 19.8 |
37.4 |
| 1948 | -694310400000 | 83.1 |
50.7 |
| 1949 | -662688000000 | 71.0 |
58.0 |
| 1950 | -631152000000 | 53.8 |
69.3 |
| 1951 | -599616000000 | 36.6 |
53.8 |
| 1952 | -568080000000 | 127.5 |
72.6 |
| 1953 | -536457600000 | 79.7 |
81.3 |
| 1954 | -504921600000 | 75.1 |
94.1 |
| 1955 | -473385600000 | 40.3 |
65.0 |
| 1956 | -441849600000 | 112.7 |
76.0 |
| 1957 | -410227200000 | 54.6 |
69.2 |
| 1958 | -378691200000 | 132.0 |
99.8 |
| 1959 | -347155200000 | 29.8 |
72.1 |
| 1960 | -315619200000 | 37.3 |
66.4 |
| 1961 | -283996800000 | 43.8 |
37.0 |
| 1962 | -252460800000 | 57.6 |
46.2 |
| 1963 | -220924800000 | 109.4 |
70.3 |
| 1964 | -189388800000 | 17.7 |
61.6 |
| 1965 | -157766400000 | 91.2 |
72.8 |
| 1966 | -126230400000 | 68.9 |
59.3 |
| 1967 | -94694400000 | 103.0 |
87.7 |
| 1968 | -63158400000 | 29.8 |
67.2 |
| 1969 | -31536000000 | 202.2 |
111.7 |
| 1970 | 0000 | 23.4 |
85.1 |
| 1971 | 31536000000 | 73.8 |
99.8 |
| 1972 | 63072000000 | 29.7 |
42.3 |
| 1973 | 94694400000 | 72.9 |
58.8 |
| 1974 | 126230400000 | 88.5 |
63.7 |
| 1975 | 157766400000 | 110.8 |
90.8 |
| 1976 | 189302400000 | 21.9 |
73.8 |
| 1977 | 220924800000 | 7.7 |
46.8 |
| 1978 | 252460800000 | 75.5 |
35.1 |
| 1979 | 283996800000 | 43.8 |
42.4 |
| 1980 | 315532800000 | 49.0 |
56.1 |
| 1981 | 347155200000 | 25.4 |
39.4 |
| 1982 | 378691200000 | 113.6 |
62.7 |
| 1983 | 410227200000 | 192.5 |
110.5 |
| 1984 | 441763200000 | 31.0 |
112.3 |
| 1985 | 473385600000 | 35.7 |
86.4 |
| 1986 | 504921600000 | 36.2 |
34.3 |
| 1987 | 536457600000 | 25.7 |
32.5 |
| 1988 | 567993600000 | 21.3 |
27.7 |
| 1989 | 599616000000 | 38.9 |
28.6 |
| 1990 | 631152000000 | 26.7 |
28.9 |
| 1991 | 662688000000 | 43.2 |
36.3 |
| 1992 | 694224000000 | 39.3 |
36.4 |
| 1993 | 725846400000 | 98.8 |
60.4 |
| 1994 | 757382400000 | 17.4 |
51.8 |
| 1995 | 788918400000 | 123.0 |
79.7 |
| 1996 | 820454400000 | 88.5 |
76.3 |
| 1997 | 852076800000 | | |
|---|
| 1998 | 883612800000 | | |
|---|
| 1999 | 915148800000 | | |
|---|
| 2000 | 946684800000 | | |
|---|
| 2001 | 978307200000 | | |
|---|
| 2002 | 1009843200000 | | |
|---|
| 2003 | 1041379200000 | | |
|---|
| 2004 | 1072915200000 | | |
|---|
| 2005 | 1104537600000 | | |
|---|
| 2006 | 1136073600000 | | |
|---|
| 2007 | 1167609600000 | | |
|---|
| 2008 | 1199145600000 | | |
|---|
| 2009 | 1230768000000 | | |
|---|
| 2010 | 1262304000000 | | |
|---|
| 2011 | 1293840000000 | | |
|---|
| 2012 | 1325376000000 | | |
|---|
| 2013 | 1356998400000 | 13.6 |
|
| 2014 | 1388534400000 | 13.1 |
|
| 2015 | 1420070400000 | 5.2 |
10.6 |
| 2016 | 1451606400000 | 29.9 |
16.1 |
| 2017 | 1483228800000 | 49.6 |
28.2 |
| 2018 | 1514764800000 | 29.9 |
36.5 |
| 2019 | 1546300800000 | 70.4 |
50.0 |
| 2020 | 1577836800000 | 9.2 |
36.5 |
| 2021 | 1609459200000 | 3.3 |
27.6 |
| 2022 | 1640995200000 | 22.3 |
11.6 |
| 2023 | 1672531200000 | 85.5 |
37.0 |
| 2024 | 1704067200000 | 43.8 |
50.6 |
| 2025 | 1735689600000 | 35.6 |
55.0 |
| 2026 | 1767225600000 |
32.0 |
37.2 |
|