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Peak Streamflow for the Nation

USGS 05587500 Mississippi River at Alton, IL

Madison County, Illinois
Hydrologic Unit Code 07110009
Latitude  38°53'06", Longitude  90°10'51" NAD27
Drainage area 171,500  square miles
Gage datum 403 feet above NAVD88
Output formats
Table
Graph
Tab-separated file
peakfq (watstore) format
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Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
1856 1856-06 440.005,Bd 573,0007,Bd
1928 1928-04-09 411.755 216,000
1929 1929-04-29 424.725 365,000
1930 1930-06-21 408.485 186,000
1931 1931-06-14 403.175 145,000
1932 1931-11-30 408.055 182,000
1933 1933-05-17 416.535 265,000
1934 1934-04-24 394.085 97,200
1935 1935-05-17 413.395 231,000
1936 1936-03-01 411.975 218,000
1937 1937-03-15 415.615 255,000
1938 1938-04-11 416.805 268,000
1939 1939-03-17 414.235 240,000
1940 1940-04-19 401.875 137,000
1941 1941-04-21 412.195 220,000
1942 1942-06-22 415.435 253,000
1943 1943-05-24 429.765 437,000
1944 1944-04-30 426.285 395,000
1945 1945-06-13 424.14 308,000
1946 1946-01-14 424.202,5 314,000
1947 1947-07-03 425.092,5 380,000
1948 1948-03-28 424.732,5 366,000
1949 1949-03-13 412.082,5 219,000
1950 1950-06-24 416.162,5 261,000
1951 1951-05-10 424.402,5 333,000
1952 1952-04-30 424.47 340,000
1953 1953-04-05 413.50 232,000
1954 1954-05-19 409.792,5 198,000
1955 1955-04-28 409.66 212,000
1956 1956-04-30 406.30 166,000
1957 1957-06-16 411.69 180,000
1958 1958-07-21 410.992,5 209,000
1959 1959-04-08 412.302,5 221,000
1960 1960-04-10 424.84 377,000
1961 1961-04-09 414.882,5 247,000
1962 1962-03-26 421.42 337,0005
1963 1963-03-23 407.722,5 179,0005
1964 1964-04-22 411.542,5 214,0005
1965 1965-05-03 425.092,5 380,0005
1966 1965-10-01 417.26 273,0005
1967 1967-04-19 416.622,5 266,0005
1968 1968-07-10 408.702,5 188,0005
1969 1969-07-13 428.64 358,0005
1970 1970-09-28 424.532,5 346,0005
1971 1971-03-02 417.082,5 271,0005
1972 1972-05-07 416.532,5 265,0005
1973 1973-04-29 434.312,5 535,0005
1974 1974-06-03 427.052,5 404,0005
1975 1975-03-31 420.372 343,0005
1976 1976-04-30 422.06 310,0005
1977 1977-05-07 414.03 179,0005
1978 1978-05-09 423.692 286,0005
1979 1979-04-14 430.99 452,0005
1980 1980-06-04 415.64 226,0005
1981 1981-05-22 424.175 311,0005
1982 1982-03-24 424.705 363,0005
1983 1982-12-05 428.535 422,0005
1984 1984-04-25 423.73 305,0005
1985 1985-03-08 425.23 403,0005
1986 1986-05-23 423.28 308,0005
1987 1986-10-10   419,0001,5
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.