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Peak Streamflow for Iowa

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Boating safety tips are available from the U.S. Coast Guard.

NOTE: Station Numbers for Iowa precipitation gages have changed (see list).


USGS 06486000 Missouri River at Sioux City, IA

Dakota County, Nebraska
Hydrologic Unit Code 10230001
Latitude  42°29'10.3", Longitude  96°24'47.1" NAD83
Drainage area 314,600  square miles
Gage datum 1,057.42 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)
1929 1929-04-01 12.40 190,000
1930 1930-03-06 9.40 108,000
1931 1931-06-16 9.79 54,700
1932 1932-06-16 11.70  
1933 1933-05-28 10.90  
1934 1934-03-03 13.401  
1935 1935-07-17 12.90  
1936 1936-03-08 11.101  
1937 1937-06-21 11.80  
1938 1938-03-24 13.20  
1939 1939-04-03 14.35 168,000
1940 1940-06-16 8.90 55,700
1941 1941-06-15 13.00 121,000
1942 1942-06-08 13.77 127,000
1943 1943-04-10 18.72 212,000
1944 1944-04-12 15.45 180,000
1945 1945-03-22 9.35 116,000
1946 1946-06-21 8.60 87,900
1947 1947-04-04 15.10 178,000
1948 1948-03-27 9.602 115,000
1949 1949-04-10 15.72 178,000
1950 1950-04-25 18.44 252,000
1951 1951-04-08 13.04 152,000
1952 1952-04-14 24.28 441,000
1953 1953-06-25 9.19 109,0006
1954 1954-06-21 6.83 51,3006
1955 1955-03-12 5.792 56,2006
1956 1956-08-18 7.10 38,9006
1957 1956-10-03 6.332 36,2006
1958 1958-07-02 7.28 39,5006
1959 1959-05-31 6.50 33,6006
1960 1960-04-03 10.52 101,0006
1961 1961-08-10 5.77 32,7006
1962 1962-04-02 6.922 71,6006
1963 1963-06-02 6.00 34,4006
1964 1964-08-06 6.26 37,4006
1965 1965-08-21 5.67 35,6006
1966 1966-07-27 6.00 38,2006
1967 1967-08-30 4.932 37,1006
1968 1968-07-24 5.27 38,3006
1969 1969-04-10 7.58 77,7006
1970 1969-10-01 5.476 51,2006
1971 1971-02-19 30.651,6 80,0002,6
1972 1972-07-17 24.532 55,8006
1973 1972-11-13 22.972 54,4006
1974 1974-06-23 21.492 41,1006
1975 1975-09-06 26.412 64,9001,6
1977 1976-11-20 24.022 67,4002,6
1978 1978-07-23 25.42 62,5006
1979 1978-11-05 23.48 57,8006
1980 1979-10-31 20.53 44,0006
1981 1981-06-14 20.97 40,9006
1982 1981-10-14 19.81 35,7006
1983 1982-11-24 22.78 50,2006
1984 1984-06-25 30.91 104,0006
1985 1985-04-23 23.94 56,6006
1986 1986-09-30 23.232 57,4006
1987 1986-10-01 23.19 57,0006
1988 1988-09-15 19.96 40,2006
1989 1988-11-03   35,5006
1990 1990-05-19 20.77 40,4006
1991 1991-06-01 19.04 35,2006
1992 1992-07-12 19.90 36,5006
1993 1993-07-15 27.33 72,2006
1994 1994-06-17 22.24 50,6006
1995 1995-06-01 25.14 65,9006
1996 1996-07-17 27.55 85,7006
1997 1997-04-10 25.492 100,0006
1998 1997-11-01 22.652 73,6006
1999 1999-07-22 20.93 55,4006
2000 1999-10-02 18.82 48,9006
2001 2001-04-27 22.352 64,1006
2002 2002-08-22 16.55 36,1006
2003 2003-09-11 16.83 36,2006
2004 2004-05-30 17.892 39,2006
2005 2005-06-09 17.91 40,9006
2006 2006-04-12 16.89 37,4006
2007 2007-03-13 18.58 42,1006
2008 2008-06-11 18.19 39,8006
2009 2009-07-10 19.04 44,8006
2010 2010-09-30 25.492 86,6006
2011 2011-07-20 35.242 192,0006
2012 2012-05-12 15.462 45,1006
2013 2013-05-28 16.57 43,7006
2014 2014-06-20 23.97 82,5006
2015 2014-10-02 17.44 49,2006
2016 2016-06-18 15.21 39,3006
2017 2017-05-29 16.65 44,7006
2018 2018-09-22 25.692 93,3006
2019 2019-03-17 29.782 159,0006
2020 2019-10-02 25.92 102,0006
2021 2020-10-18 12.552 35,3006
2022 2022-08-16 12.87 34,6006
2023 2023-09-21 13.76 37,5006
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.