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Peak Streamflow for the Nation

USGS 05585500 ILLINOIS RIVER AT MEREDOSIA, IL

Morgan County, Illinois
Hydrologic Unit Code 07130011
Latitude  39°49'52.2", Longitude  90°33'35.4" NAD83
Drainage area 26,029  square miles
Gage datum 417.68 feet above NAVD88
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peakfq (watstore) format
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Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
1921 1921-05-05 14.60 34,8005
1922 1922-04-20 25.10 93,1005
1923 1923-03-28 15.40 38,3005
1924 1924-07-04 19.10 55,4005
1925 1925-03-28 15.40 38,6005
1926 1926-09-19 22.20 71,2005
1927 1926-10-09   105,0002,5
1928 1927-12-15 19.20 59,2005
1929 1929-04-16   63,3002,5
1930 1930-03-05 18.00 48,0005
1931 1931-06-15 11.50 23,3005
1932 1932-01-26 15.00 36,0005
1933 1933-05-23 25.50 90,8005
1934 1934-04-08 9.40 15,8005
1935 1935-05-18   70,8002,5
1936 1936-03-05 19.80 57,3005
1937 1937-05-10 17.30 46,4005
1938 1938-04-16 21.80 68,6005
1939 1939-03-22 18.082 69,5005
1940 1940-03-08   25,6001,5
1941 1941-06-17   26,0001,5
1942 1942-02-17   73,6001,5
1943 1943-05-26 28.61 123,0005
1944 1944-04-29 24.862 102,0005
1945 1945-05-24 18.072 62,8005
1946 1946-01-14 18.882 66,0005
1947 1947-06-11 20.152 68,3005
1948 1948-04-01 20.592 73,6005
1949 1949-02-27 16.91 59,8005
1950 1950-05-02 20.432 77,2005
1951 1951-02-28 20.15 77,8005
1952 1952-04-25 17.482 55,7005
1953 1953-04-07 11.782 35,2005
1954 1954-04-24 11.072 33,3005
1955 1955-02-27 11.872 37,7005
1956 1956-06-02 9.53 29,7005
1957 1957-05-06 18.21 66,3005
1958 1958-06-22 15.972 60,8005
1959 1959-02-19 18.012 64,3005
1960 1960-04-07 20.882 73,0005
1961 1961-05-16 15.73 53,0005
1962 1962-03-29 22.27 91,1005
1963 1963-03-09 13.44 41,1005
1964 1964-04-27 14.512 48,7005
1965 1965-04-18 17.622 55,0005
1966 1966-05-25 17.932 65,6005
1967 1967-04-10 14.692 48,6005
1968 1968-02-11 18.232 66,9005
1969 1969-02-09 17.622 62,9005
1970 1970-05-22 22.57 94,8005
1971 1970-10-01 17.43 61,4005
1972 1972-05-01 15.672 51,2005
1973 1973-05-02 26.252 102,0005
1974 1974-06-29 24.84 110,0005
1975 1975-03-04 16.46 55,1005
1976 1976-03-13 20.632 80,6005
1977 1977-05-12 13.812 45,9005
1978 1978-05-20 19.85 72,6005
1979 1979-04-19 27.28 111,0005
1980 1980-06-07 16.952 76,9005
1981 1981-05-24 20.95 75,5005
1982 1982-03-24 25.56 104,0005
1983 1982-12-12 26.40 112,0005
1984 1984-03-28 21.602 76,8005
1985 1985-03-10 27.62 122,0005
1986 1985-11-27 24.85 96,8005
1987 1986-10-11 21.60 69,6005
1988 1988-04-14 13.84 41,8005
1989 1989-09-18 10.80 32,8005
2018 2018-03-07 19.72  
2019 2019-06-04 28.39  
2020 2020-05-27 25.39  
2021 2021-07-17 17.98  
2022 2022-04-14 17.61  
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.