Neshaminy Creek near Langhorne, Bucks County PA (LNGP1)
Gage Location: Bucks County, Pennsylvania	Site Location: Bucks County, Pennsylvania
Latitude: 40.174	Longitude: -74.957	Elevation: 40.57 ft. MSL	Drainage Area: 210 Sq. Mi.
Minor Stage: 9 ft.	Moderate Stage: 10 ft.	Major Stage: 12 ft.
First Flood: 1933-08-23	Last Flood: 2012-12-21 Crest: 10.09 ft.	Datum change: 1934-10-01	Number of Floods: 161

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Year Before Datum Change Number of Floods 1933 1

Year After Datum Change Number of Floods 1934 0 1935 1 1936 5 1937 1 1938 3 1939 3 1940 5 1941 1 1942 2 1943 0 1944 4 1945 3 1946 2 1947 0 1948 1 1949 0 1950 2 1951 1 1952 3 1953 1 1954 0 1955 3 1956 0 1957 1 1958 2 1959 0 1960 1 1961 3 1962 3 1963 1 1964 1 1965 1 1966 1 1967 1 1968 2 1969 3 1970 1 1971 5 1972 4 1973 6 1974 2 1975 2 1976 0 1977 3 1978 1 1979 6 1980 0 1981 1 1982 3 1983 1 1984 1 1985 1 1986 1 1987 1 1988 1 1989 1 1990 1 1991 0 1992 1 1993 1 1994 1 1995 2 1996 4 1997 0 1998 1 1999 2 2000 2 2001 1 2002 0 2003 5 2004 2 2005 4 2006 4 2007 4 2008 4 2009 5 2010 4 2011 9 2012 1 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