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Peak Streamflow for the Nation

USGS 05454500 Iowa River at Iowa City, IA

Johnson County, Iowa
Hydrologic Unit Code 07080209
Latitude  41°39'24.06", Longitude  91°32'27.6" NAD83
Drainage area 3,271  square miles
Gage datum 617.10 feet above NAVD88
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Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1851 1851-06 24.105,Bd 70,0007,Bd
1881 1881-07-17 21.10 51,0007
1903 1903-06-03 15.00 22,500
1904 1904-03-25 8.30 9,880
1905 1905-06-10 8.80 9,740
1906 1906-03-02 10.20 11,900
1907 1907-07-15   13,0002
1908 1908-06-03   6,0002
1909 1909-07-07   12,5002
1910 1910-03-09   12,6002
1911 1911-02-17   17,2002
1912 1912-04-04   20,0002
1913 1913-03-24   7,0302
1914 1914-09-15 10.60 9,6202
1915 1915-02-18   20,0002
1916 1916-03-26 13.50 16,100
1917 1917-03-29   17,5002
1918 1918-06-08 19.60 42,500
1919 1919-05-07 12.00 13,800
1920 1920-03-18 9.40 8,300
1921 1921-09-21 12.70 15,600
1922 1922-04-11 6.60 5,880
1923 1923-04-07 9.70 8,590
1924 1924-07-01 15.30 19,900
1925 1925-03-21 3.44 1,590
1926 1926-09-23 14.50 17,800
1927 1927-05-24 11.10 10,900
1928 1927-10-06 10.60 10,000
1929 1929-03-16 16.10 21,900
1930 1930-06-15 13.30 13,600
1931 1931-09-28 4.10 2,790
1932 1931-12-01 9.20 7,880
1933 1933-04-10 10.00 8,700
1934 1934-07-17 3.60 2,140
1935 1935-03-11 9.806 8,710
1936 1936-03-15 12.00 12,900
1937 1937-03-07 14.60 17,100
1938 1938-01-24 6.801 5,0002
1939 1939-03-12 10.40 9,870
1940 1940-03-22 4.20 3,020
1941 1941-03-21 8.50 7,490
1942 1942-06-13 8.90 7,800
1943 1943-06-02 11.10 10,600
1944 1944-05-25 18.00 31,100
1945 1945-03-26 10.30 9,560
1946 1946-01-09 13.30 14,800
1947 1947-06-17 18.60 33,800
1948 1948-03-19 14.50 18,000
1949 1949-03-10 13.00 14,100
1950 1950-03-11 12.80 13,700
1951 1951-04-03 13.70 15,700
1952 1952-03-17 10.70 10,400
1953 1953-02-20 11.85 11,900
1954 1954-07-03 8.31 7,690
1955 1955-04-24 5.65 4,600
1956 1956-08-31 3.95 3,100
1957 1957-06-25 5.70 4,700
1958 1958-09-07 5.95 5,000
1959 1959-04-14 10.40 9,3806
1960 1960-04-16 11.28 10,7006
1961 1961-03-13 10.73 9,9406
1962 1962-07-14 12.35 12,3006
1963 1963-03-20 9.18 8,2206
1964 1964-06-27 3.74 3,0006
1965 1965-04-24 11.74 11,1006
1966 1966-02-10 10.80 10,1006
1967 1967-06-07 5.16 4,4206
1968 1967-11-02 3.85 3,3106
1969 1969-07-27 13.93 15,0006
1970 1970-03-10 9.94 8,5406
1971 1971-02-26 11.90 11,1006
1972 1972-07-17 11.54 10,6006
1973 1973-05-01 22.046 11,3006
1974 1974-06-09 22.44 11,9006
1975 1975-04-09 21.50 10,5006
1976 1976-04-24 18.72 7,3506
1977 1977-09-18 16.38 5,2406
1978 1978-03-26 20.34 9,5106
1979 1979-03-29 21.64 10,7006
1980 1980-03-19 16.67 5,6506
1981 1981-06-29 17.31 6,2306
1982 1982-06-15 21.44 10,4006
1983 1983-04-26 20.72 9,4906
1984 1984-03-01 20.68 9,4306
1985 1985-03-04 21.50 10,5006
1986 1986-06-30 21.22 10,1006
1987 1986-11-19 17.17 6,1006
1988 1988-01-31 15.33 4,4506
1989 1989-09-09 13.87 3,2406
1990 1990-06-17 13.29 13,5006
1991 1991-06-13 23.35 13,7006
1992 1992-04-25 18.54 8,0806
1993 1993-08-10 28.52 28,2006
1994 1994-03-10 20.032 9,4406
1995 1995-04-30 20.11 9,5306
1996 1996-05-20 17.80 6,9006
1997 1997-02-21 20.91 10,5006
1998 1998-04-09 20.36 9,9606
1999 1999-06-10 18.41 7,7606
2000 2000-07-12 17.29 6,8906
2001 2001-03-20 20.53 11,1006
2002 2002-08-23 15.03 4,6506
2003 2003-05-15 16.38 6,3106
2004 2004-06-11 17.40 7,5506
2005 2005-05-20 16.64 6,3106
2006 2006-04-08 14.92 5,0306
2007 2007-03-23 19.20 10,1006
2008 2008-06-15 31.53 41,1006
2009 2009-03-15 20.072 11,0006
2010 2010-03-18 19.832 11,4006
2011 2011-02-22 18.08 8,5006
2012 2012-05-08 13.51 3,5406
2013 2013-06-04 24.90 19,9006
2014 2014-07-12 25.15 19,9006
2015 2015-06-13 18.09 8,9306
2016 2015-12-23 20.05 10,9006
2017 2017-04-06 17.47 7,8806
2018 2018-09-20 20.01 11,0006
2019 2018-10-06 23.23 16,1006
2020 2020-07-02 19.23 10,600
2021 2021-03-10 16.76 7,960
2022 2022-05-07 15.33 6,940
2023 2023-03-04 15.442 6,490
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.