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Peak Streamflow for the Nation

USGS 01613000 POTOMAC RIVER AT HANCOCK, MD

Washington County, Maryland
Hydrologic Unit Code 02070004
Latitude  39°41'51.2", Longitude  78°10'40.4" NAD83
Drainage area 4,064  square miles
Gage datum 383.00 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)
1889 1889-05 40.00Bd 220,0007,Bd
1924 1924-05 35.00Bd 160,0007,Bd
1929 1929-04 32.40Bd 110,0007,Bd
1933 1933-04-21 23.10 64,400
1934 1934-01-08 14.20 27,700
1935 1935-01-23 17.30 38,600
1936 1936-03-18 47.60 340,000
1937 1937-04-27 35.70 153,000
1938 1937-10-29 31.80 122,000
1939 1939-02-04 24.85 76,600
1940 1940-06-01 21.33 58,100
1941 1941-04-06 16.48 36,500
1942 1942-05-23 23.18 67,000
1943 1942-10-16 36.63 155,000
1944 1944-05-08 18.10 42,400
1945 1945-09-19 21.98 61,000
1946 1946-06-03 13.62 25,000
1947 1947-03-16 13.05 23,000
1948 1948-04-15 22.27 62,500
1949 1949-06-19 26.86 88,400
1950 1950-02-02 17.61 40,300
1951 1951-06-14 23.61 67,300
1952 1952-04-29 21.89 58,600
1953 1952-11-22 17.35 38,300
1954 1954-03-02 24.52 72,100
1955 1955-08-19 32.40 123,000
1956 1956-04-08 17.82 40,300
1957 1957-02-11 19.43 47,200
1958 1958-05-06 18.85 44,600
1959 1959-06-04 13.112 22,700
1960 1960-05-09 26.60 80,600
1961 1961-02-20 22.10 56,500
1962 1962-03-22 24.50 68,800
1963 1963-03-21 26.24 81,800
1964 1964-04-30 22.61 62,200
1965 1965-03-06 18.58 43,500
1966 1966-02-14 16.60 35,300
1967 1967-03-08 26.91 85,900
1968 1968-05-29 17.97 40,900
1969 1969-03-26 11.48 17,700
1970 1970-04-03 21.61 57,200
1971 1971-02-14 22.91 63,600
1972 1972-06-23 30.79 112,000
1973 1973-04-28 21.06 54,600
1974 1973-12-28 23.19 65,100
1975 1975-03-20 25.44 77,200
1976 1976-01-02 21.71 57,700
1977 1976-10-10 28.56 96,700
1978 1978-03-15 23.732 68,800
1979 1979-02-27 25.96 81,300
1980 1980-05-01 18.67 43,800
1981 1981-04-14 15.15 29,900
1982 1982-02-04 19.40 47,000
1983 1983-04-25 22.21 60,700
1984 1984-02-15 25.64 79,500
1985 1985-06-01 15.31 30,500
1986 1985-11-06 41.20 207,000
1987 1987-04-18 24.07 70,600
1988 1988-05-07 21.25 55,800
1989 1989-05-17 16.41 34,600
1990 1990-05-30 13.932 25,600
1991 1991-03-24 19.31 46,500
1992 1992-04-23 14.77 28,500
1993 1993-04-17 25.10 76,400
1994 1994-05-09 19.37 46,800
1995 1995-01-16 18.03 41,100
1996 1996-01-20 36.26 152,000
1997 1996-12-02 18.10 41,400
1998 1998-03-22 21.08 55,000
1999 1999-03-19 13.02 22,700
2000 2000-02-20 17.05 37,100
2001 2001-03-22 14.92 29,000
2002 2002-04-23 15.98 33,000
2003 2003-09-20 26.09 82,100
2004 2003-11-20 18.97 45,100
2005 2005-03-29 23.26 66,200
2006 2006-04-23 12.92 22,400
2007 2007-04-16 21.36 56,400
2008 2008-03-06 19.25 46,300
2009 2009-05-05 22.36 61,500
2010 2010-03-14 25.94 81,200
2011 2011-05-19 25.41 78,100
2012 2011-12-08 16.45 34,800
2013 2013-05-09 18.84 44,500
2014 2014-05-17 21.33 57,800
2015 2015-06-28 14.45 28,500
2016 2016-02-04 15.93 35,600
2017 2017-05-06 15.04 32,100
2018 2018-06-04 26.38 90,000
2019 2018-12-16 23.57 73,900
2020 2020-05-01 17.42 43,200
2021 2021-03-01 20.38 57,200
2022 2022-05-08 21.76 64,200
2023 2023-03-04 11.28 19,000
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.