Delaware River near Delaware Water Gap, Warren County NJ (TKSN4)
Gage Location: Warren County, New Jersey	Site Location: Monroe County, New Jersey
Latitude: 41.013	Longitude: -75.086	Elevation: 293.64 ft. MSL	Drainage Area: 3850 Sq. Mi.
Minor Stage: 21 ft.	Moderate Stage: 23 ft.	Major Stage: 25 ft.
First Flood: 1955-08-19	Last Flood: 2011-09-09 Crest: 24.94 ft.	Datum change: 1967-10-01	Number of Floods: 12

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Year Before Datum Change Number of Floods 1955 1 1956 0 1957 0 1958 0 1959 0 1960 0 1961 0 1962 0 1963 0 1964 0 1965 0 1966 0

Year After Datum Change Number of Floods 1967 0 1968 0 1969 0 1970 0 1971 0 1972 0 1973 1 1974 0 1975 0 1976 0 1977 0 1978 1 1979 0 1980 0 1981 0 1982 0 1983 0 1984 1 1985 0 1986 1 1987 0 1988 0 1989 0 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 1 1997 0 1998 0 1999 0 2000 0 2001 0 2002 0 2003 0 2004 1 2005 1 2006 1 2007 0 2008 0 2009 0 2010 0 2011 3 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