Ramapo River at Pompton Lakes, Passaic County NJ (PPTN4)
Gage Location: Passaic County, New Jersey	Site Location: Passaic County, New Jersey
Latitude: 40.993	Longitude: -74.279	Elevation: 171.35 ft. MSL	Drainage Area: 160 Sq. Mi.
Minor Stage: 11.5 ft.	Moderate Stage: 13.5 ft.	Major Stage: 14.5 ft.
First Flood: 1882-09-23	Last Flood: 2011-09-08 Crest: 14.33 ft.	Datum change: 2008-05-01	Number of Floods: 99

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MINOR FLOODS Date of Flood Crest(ft)

MODERATE FLOODS Date of Flood Crest(ft) 2011-04-17 14.18 2011-09-08 14.33

MAJOR FLOODS Date of Flood Crest(ft) 2007-04-16 16.99 2010-03-14 18.05 2011-03-07 15.83 2011-03-11 16.72 2011-08-28 22.61

MISSING Date of Flood Crest(ft) 1882-09-23 -9999 1896-02-06 -9999 1902-03-02 -9999 1922-03-07 12.37 1924-04-07 12.58 1927-09-02 12.68 1933-08-24 12.33 1936-03-12 13.56 1938-09-22 13.13 1945-07-20 12.14 1945-07-23 13.45 1948-12-31 12.65 1951-03-31 13.55 1952-03-12 12.5 1952-04-06 12 1952-06-02 12.53 1953-01-25 12 1955-08-14 12.41 1955-08-19 13.58 1955-10-16 14.4 1957-12-21 12.5 1958-02-28 12.09 1960-08-20 12.09 1961-02-26 12.23 1968-05-29 13.82 1970-02-11 12.05 1970-04-03 12.43 1971-08-28 12.99 1971-09-12 12.44 1973-02-03 12.75 1973-12-21 13.17 1975-09-27 12.03 1977-03-23 12.63 1977-11-08 14.04 1978-03-27 12.18 1978-05-15 12.2 1979-01-25 12.65 1979-03-07 12.04 1979-05-25 12.16 1980-03-22 13.13 1980-04-10 12.96 1981-02-21 12.13 1982-01-05 11.73 1983-03-19 12.66 1983-04-17 12.12 1983-04-25 11.8 1983-12-14 13.15 1984-04-05 15.21 1984-05-30 13.05 1984-07-07 12.1 1986-08-03 11.8 1987-04-01 11.71 1987-04-05 13.07 1989-05-06 12.07 1989-05-17 12.77 1989-10-21 12.29 1990-12-05 11.72 1993-03-29 11.82 1993-04-02 11.71 1995-11-12 12.24 1996-01-20 12.74 1996-01-28 12.52 1996-07-14 12.1 1996-10-20 12.14 1998-05-11 12 1999-03-23 12.18 1999-09-16 14.9 2001-03-23 11.76 2003-03-22 11.77 2003-10-30 11.71 2003-12-12 12.31 2003-12-25 12.04 2004-07-23 12.2 2004-08-17 11.74 2004-09-09 12.32 2004-09-18 13.56 2004-09-29 12.78 2005-01-15 10.01 2005-03-29 10.58

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 0 3 0 0 0 0 0 6 February 0 0 0 0 0 0 0 6 March 0 0 0 0 3 3 0 15 April 0 0 1 1 0 2 0 10 May 0 1 0 0 0 0 0 7 June 0 2 0 0 0 0 0 1 July 0 0 0 0 0 0 0 5 August 0 0 0 0 1 1 0 7 September 0 0 1 1 0 0 0 9 October 0 0 0 0 0 2 0 4 November 0 1 0 0 0 0 0 2 December 0 2 0 0 0 1 0 7

Categorical Floods by Season Season Minor Moderate Major Missing Fall 1 1 2 15 Winter 5 0 1 19 Spring 1 1 5 32 Summer 2 0 1 13

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