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

Click on table headers to sort

MINOR FLOODS Date of Flood Crest(ft) 1936-12-20 9.09 1939-01-30 9.98 1940-04-20 9.58 1941-07-30 9.52 1942-08-09 9.49 1942-12-30 9.27 1944-01-04 9.88 1944-04-25 9.16 1944-11-28 9 1945-11-29 9.37 1952-11-22 9.59 1953-01-24 9.27 1955-10-15 9.96 1957-12-21 9.05 1958-04-07 9.09 1961-01-01 9.79 1961-04-13 9.26 1961-07-29 9.89 1962-01-07 9.82 1962-02-26 9.82 1963-03-06 9.1 1968-01-14 9.31 1968-05-29 9.45 1969-08-05 9.56 1969-12-11 9.48 1971-02-08 9.83 1971-10-10 9.67 1972-06-22 9.95 1972-07-13 9.66 1973-01-29 9.08 1974-08-02 9.76 1974-12-16 9.84 1977-04-05 9.06 1977-12-18 9.81 1977-12-21 9.27 1979-01-08 9.04 1981-05-12 9.51 1982-02-03 9.55 1982-03-03 9.55 1983-04-10 9.38 1986-01-26 9.55 1988-09-21 9.51 1995-03-09 9.09 1995-11-12 9.97 1998-04-02 9.75 2000-12-17 9.93 2003-02-23 9.48 2003-06-04 9.19 2003-10-29 9.31 2003-11-20 9 2004-02-06 9.76 2005-01-14 9.82 2005-12-16 9.35 2006-07-22 9.1 2007-03-02 9.46 2007-10-27 9.49 2008-02-13 9.93 2008-06-05 9.57 2009-10-25 9 2010-03-30 9.28 2011-03-07 9.71 2011-03-11 9.51 2011-11-23 9.49

MODERATE FLOODS Date of Flood Crest(ft) 1935-02-15 11.8 1936-01-09 10.88 1936-03-12 11 1936-03-18 10.24 1937-11-13 10.26 1938-12-06 10.14 1939-02-04 11.25 1939-04-07 10.41 1940-02-20 11.12 1940-03-04 11.12 1940-03-15 11.45 1940-04-09 10.72 1944-03-13 10.12 1945-01-02 10.2 1945-07-19 10.28 1946-07-24 10.48 1948-12-30 11.77 1950-08-03 10.03 1951-12-21 11.73 1952-03-11 10.6 1952-04-28 10.76 1958-02-28 11.13 1962-03-12 10.79 1964-01-10 10.64 1965-02-08 10.03 1966-02-13 11 1969-07-29 10.6 1970-04-02 10.8 1971-02-14 10.94 1972-11-11 10.5 1973-02-03 10.98 1973-08-02 11.3 1973-12-27 10.26 1975-03-20 11.3 1979-01-21 11.84 1979-02-25 11.11 1979-09-22 10.11 1982-01-04 10.27 1984-04-05 10.93 1985-09-27 11.66 1987-07-02 11.4 1989-05-30 11.53 1990-05-30 10.02 1992-06-06 11.86 1996-01-27 10.25 1999-03-22 10.38 2000-07-30 11.89 2005-10-09 11.74 2006-09-02 10.97 2006-11-08 11.37 2007-04-27 11.96 2008-03-08 10.28 2008-12-13 10.86 2009-06-14 11.9 2009-12-09 10.07 2010-01-25 10.45 2010-10-01 10.48 2011-09-06 10.27 2011-09-07 10.7 2011-12-08 10.61 2012-12-21 10.09

MAJOR FLOODS Date of Flood Crest(ft) 1933-08-23 17.3 1936-01-03 12.53 1938-07-23 15.94 1938-09-21 13.34 1946-06-02 14.54 1950-11-26 14.92 1955-08-13 13.55 1955-08-19 22.84 1960-09-13 14.36 1967-03-07 13.02 1971-08-28 14.8 1971-09-14 14.32 1972-11-09 15.01 1973-06-30 18.99 1973-12-21 13.36 1975-07-13 12.75 1978-01-26 13.05 1979-01-25 13.64 1979-02-26 12.06 1993-08-17 14.34 1994-01-28 13.63 1996-01-19 14.99 1996-06-12 12.3 1996-10-19 15.86 1999-09-17 21.91 2001-06-17 16.87 2003-12-11 14.04 2004-09-29 15.21 2005-04-03 12.87 2006-06-28 13.87 2007-04-16 14.68 2009-08-02 12.16 2010-03-14 12.85 2011-04-17 12.13 2011-08-28 19.56 2011-09-08 18.09

MISSING Date of Flood Crest(ft) 2009-12-27 -9999

Categorical Floods by Month Month Minor After Datum Minor Total Moderate After Datum Moderate Total Major After Datum Major Total Missing After Datum Missing Total January 10 10 7 7 5 5 0 0 February 6 6 9 9 1 1 0 0 March 7 7 10 10 2 2 0 0 April 7 7 6 6 3 3 0 0 May 2 2 2 2 0 0 0 0 June 3 3 2 2 5 5 0 0 July 4 4 5 5 2 2 0 0 August 3 3 2 2 6 7 0 0 September 1 1 5 5 6 6 0 0 October 5 5 2 2 1 1 0 0 November 6 6 3 3 2 2 0 0 December 9 9 8 8 2 2 1 1

Categorical Floods by Season Season Minor Moderate Major Missing Fall 12 10 9 0 Winter 25 24 8 1 Spring 16 18 5 0 Summer 10 9 14 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