Pompton River at Pompton Plains, Morris County NJ (PPPN4)
Gage Location: Passaic County, New Jersey	Site Location: Morris County, New Jersey
Latitude: 40.969	Longitude: -74.282	Elevation: 160 ft. MSL	Drainage Area: 355 Sq. Mi.
Minor Stage: 16 ft.	Moderate Stage: 18 ft.	Major Stage: 19 ft.
First Flood: 1903-10-10	Last Flood: 2011-09-08 Crest: 20.33 ft.	Datum change: 1964-09-01	Number of Floods: 46

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MINOR FLOODS Date of Flood Crest(ft) 1945-07-23 16.29 1952-06-02 16.37 1955-10-16 17.06 1970-02-11 16.57 1971-09-12 16.78 1973-06-30 16.38 1975-03-21 16.48 1976-01-28 16.94 1977-03-23 17.75 1978-03-27 17.48 1979-05-25 16.95 1980-03-22 17.74 1983-03-22 16.28 1983-04-17 17.34 1983-12-14 17.24 1996-01-28 16.96 1998-05-12 16.32 2003-12-12 16.77 2005-10-09 17.86 2005-10-13 17.56 2010-03-31 16.9

MODERATE FLOODS Date of Flood Crest(ft) 1951-03-31 18.75 1972-06-23 18.04 1979-01-25 18.17 1983-03-19 18.27 1987-04-05 18.91 1989-05-17 18.89

MAJOR FLOODS Date of Flood Crest(ft) 1968-05-30 22.18 1970-04-03 19.28 1971-08-28 19.26 1973-02-03 20.37 1973-12-22 19.27 1977-11-09 19.71 1980-04-10 19.56 1984-04-06 24.47 1984-05-30 20.01 1999-09-17 21.01 2005-04-03 20.42 2007-04-16 21.72 2010-03-14 22.77 2011-03-07 20.32 2011-03-11 22.11 2011-04-17 19.84 2011-08-29 25.24 2011-09-08 20.33

MISSING Date of Flood Crest(ft) 1903-10-10 -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 2 2 1 1 0 0 0 0 February 1 1 0 0 1 1 0 0 March 6 6 1 2 3 3 0 0 April 1 1 1 1 6 6 0 0 May 2 2 1 1 2 2 0 0 June 1 2 1 1 0 0 0 0 July 0 1 0 0 0 0 0 0 August 0 0 0 0 2 2 0 0 September 1 1 0 0 2 2 0 0 October 2 3 0 0 0 0 0 1 November 0 0 0 0 1 1 0 0 December 2 2 0 0 1 1 0 0

Categorical Floods by Season Season Minor Moderate Major Missing Fall 4 0 3 1 Winter 5 1 2 0 Spring 9 4 11 0 Summer 3 1 2 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