Tunkhannock Creek near Tunkhannock, Wyoming County PA (TNKP1)
Gage Location: Wyoming County, Pennsylvania	Site Location: Wyoming County, Pennsylvania
Latitude: 41.5583	Longitude: -75.895	Elevation: 610.1 ft. MSL	Drainage Area: 383 Sq. Mi.
Minor Stage: 11 ft.	Moderate Stage: 14 ft.	Major Stage: 17 ft.
First Flood: 1917-10-30	Last Flood: 2011-09-28 Crest: 13.43 ft.	Datum change: 1938-08-10	Number of Floods: 52

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Year Before Datum Change Number of Floods 1917 1 1918 0 1919 0 1920 0 1921 0 1922 1 1923 0 1924 1 1925 1 1926 1 1927 1 1928 0 1929 0 1930 0 1931 0 1932 0 1933 1 1934 0 1935 0 1936 1 1937 0

Year After Datum Change Number of Floods 1938 0 1939 0 1940 1 1941 0 1942 2 1943 0 1944 0 1945 0 1946 1 1947 1 1948 0 1949 0 1950 2 1951 0 1952 1 1953 0 1954 0 1955 1 1956 0 1957 0 1958 0 1959 1 1960 1 1961 0 1962 0 1963 0 1964 1 1965 0 1966 0 1967 1 1968 0 1969 0 1970 1 1971 0 1972 2 1973 0 1974 0 1975 2 1976 2 1977 0 1978 2 1979 0 1980 0 1981 1 1982 0 1983 2 1984 0 1985 1 1986 1 1987 0 1988 0 1989 0 1990 0 1991 0 1992 0 1993 2 1994 0 1995 1 1996 2 1997 0 1998 0 1999 0 2000 0 2001 0 2002 0 2003 0 2004 1 2005 3 2006 3 2007 0 2008 1 2009 0 2010 0 2011 4 2012 0 2013 0

Codes and description

C1|Crest information looks unreliable and incomplete and not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information looks reliable despite potential problems. This data was used in frequency calculations.
C3|Crest height estimated by the USGS.
C4|Crest height is from the National Weather Service.
C5|Crest height affected by backwater.
C6|Crest occurred at a previous flood stage that is lower than the current flood stage. The crests below the new flood stage are not used in flood frequency calculations.
C7|Crest from USGS yearly peak and/or date is different than the crest we provide. In many cases MARFC uses crest based on backwater or ice effects.
C8|Crest month or day of occurrence has been estimated by The Middle Atlantic River Forecast Center usually based on nearby gage information.
C9|Crest date (day) in the month is unknown.
F1|Flow is an estimate.
F2|Flow affected by regulation or diversion and in some cases to an unknown degree.
F3|Flow effected by snow-melt, ice jam or debris jam break up.
F4|Flow affected by dam failure.
F5|Flow - All or part of the record affected by urbanization, mining, agricultural changes, channelization or other factors.
G1|Gage height at a different site and/or datum.
G2|Gage is not an official USGS gage with crests provided by the NWS. Crest information looks unreliable and incomplete and not used in flood frequency calculations.
G3|Gage datum changed during this year.
none,No code; Good Data

Updated: 08:09 AM Feb 08, 2013