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Peak Streamflow for the Nation

USGS 05437500 ROCK RIVER AT ROCKTON, IL

Winnebago County, Illinois
Hydrologic Unit Code 07090005
Latitude  42°27'01", Longitude  89°04'21" NAD83
Drainage area 6,363  square miles
Gage datum 707.75 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)
1904 1904-03-22 13.803 28,500
1905 1905-03-26 11.563 23,000
1906 1906-03-03 11.303 22,300
1907 1907-01-20 8.103,6 16,800
1908 1908-03-10 7.813 16,000
1915 1915-09-16 9.683,6 18,000
1916 1916-03-30 13.063 32,500
1917 1917-06-23 7.883 13,900
1918 1918-03-14 11.333 24,600
1919 1919-03-19 11.313 24,600
1937 1937-02 14.601,6,Bd  
1940 1940-08-27 10.53 15,800
1941 1941-03-25 8.47 11,500
1942 1942-09-03 6.54 7,760
1943 1943-03-16 12.88 22,800
1944 1944-03-15 10.91 17,300
1945 1945-09-28 6.77 8,020
1946 1946-01-09 12.24 20,900
1947 1947-04-11 7.44 9,200
1948 1948-03-20 13.82 25,700
1949 1949-03-09 10.57 16,500
1950 1950-07-26 9.51 13,800
1951 1951-03-04 9.57 14,000
1952 1952-03-22 11.82 19,800
1953 1953-02-24 9.57 14,000
1954 1954-07-11 6.36 7,450
1955 1955-02-20 8.91 12,400
1956 1956-05-11 5.92 6,340
1957 1957-06-17 6.22 6,880
1958 1958-03-01 5.91 6,340
1959 1959-04-04 14.08 25,400
1960 1960-04-02 13.49 23,800
1961 1961-03-29 9.04 12,600
1962 1962-03-30 11.32 18,000
1963 1963-03-20 8.83 12,100
1964 1964-03-14 6.52 7,490
1965 1965-09-27 9.84 14,500
1966 1966-02-13 9.17 13,000
1967 1967-03-28 7.70 9,800
1968 1968-07-01 6.89 8,190
1969 1969-01-24   15,0001,2
1970 1970-09-18 6.55 7,540
1971 1971-02-27 11.22 17,800
1972 1972-09-19 8.78 12,200
1973 1973-04-22 13.40 24,300
1974 1974-03-11 11.32 19,900
1975 1975-03-25 15.54 30,000
1976 1976-03-05 10.45 16,700
1977 1977-02-26 5.80 5,400
1978 1978-07-03 11.71 19,900
1979 1979-04-02 12.75 22,500
1980 1980-09-13 6.89 9,200
1981 1981-02-28 7.452 10,300
1982 1982-03-17 10.45 16,900
1983 1983-04-07 9.44 14,600
1984 1984-02-19 7.25 9,940
1985 1985-03-01 12.07 20,600
1986 1986-03-28 10.502 16,700
1987 1986-10-05 10.82 17,400
1988 1988-02-04   12,0002
1989 1989-03-17 7.03 8,910
1990 1990-03-19 8.19 11,300
1991 1991-03-09 7.87 11,500
1992 1991-12-02 7.02 10,000
1993 1993-04-21 12.84 22,900
1994 1994-02-21 10.37 16,900
1995 1995-05-17 7.30 10,100
1996 1996-07-20 11.49 19,500
1997 1997-02-24 11.79 20,300
1998 1998-04-22 9.35 14,300
1999 1999-04-28 9.91 15,800
2000 2000-06-14 12.63 22,400
2001 2001-04-12 7.62 10,700
2002 2002-06-09 8.52 12,700
2003 2003-05-16 6.26 8,000
2004 2004-06-03 11.09 18,600
2005 2005-02-18 9.24 14,300
2006 2006-03-13 6.97 9,410
2007 2007-08-25 11.10 18,600
2008 2008-06-17 14.72 27,800
2009 2009-03-29 11.59 19,800
2010 2010-07-29 13.39 24,300
2011 2011-03-27 9.01 13,700
2012 2012-03-14 6.03 6,860
2013 2013-04-21 13.46 24,5002
2014 2014-07-03 8.52 12,500
2015 2015-06-17 7.766,R 10,200R
2016 2015-12-24 8.552,R 11,800R
2017 2017-07-28 13.14R 23,200R
2018 2018-02-26 13.51R 24,300R
2019 2019-03-17 15.13R 29,500R
2020 2019-10-07 13.00R 23,100R
2021 2021-03-15 8.30 11,000
2022 2022-08-14 7.99 10,300
2023 2023-04-05 9.15 13,000
2024 2024-07-17 11.25 18,200
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.