Wanaque River at Wanaque, Passaic County NJ (WNQN4)
Gage Location: Passaic County, New Jersey	Site Location: Passaic County, New Jersey
Latitude: 41.044	Longitude: -74.293	Elevation: 210 ft. MSL	Drainage Area: 90 Sq. Mi.
Minor Stage: 5 ft.	Moderate Stage: 6 ft.	Major Stage: 8 ft.
First Flood: 1920-10-01	Last Flood: 2011-12-08 Crest: 5.58 ft.	Datum change: 1931-03-15	Number of Floods: 50

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1920-10-01 7.5 1650 Moderate *** (5) 1922-03-08 7.65 1690 Moderate *** (5) 1924-04-07 8.01 5050 Major *** (5) 1925-02-12 5.57 2040 Minor *** (5) 1927-09-02 6.9 3390 Moderate *** (A) (5 1933-04-18 5.85 1830 Minor (A) 1936-03-19 6.07 1940 Moderate (A) 1938-01-25 6.17 2020 Moderate (A) 1945-07-23 6.37 1690 Moderate (A) 1951-03-31 9.12 8470 Major (A) 1952-06-01 7.62 3940 Moderate (A) 1953-01-25 6 1770 Moderate (A) 1955-10-17 5.96 1740 Minor (A) 1958-04-07 5.62 1480 Minor (A) 1960-04-05 5.67 1520 Minor (A) 1968-05-29 8.42 5920 Major (A) 1970-04-03 6.96 2830 Moderate (A) 1972-06-23 6.32 2070 Moderate (A) 1973-02-03 7.33 3410 Moderate (A) 1975-03-21 5.23 1270 Minor (A) 1976-01-28 5.6 1520 Minor (A) 1977-03-23 6.3 2090 Moderate (A) 1978-03-27 6.98 2800 Moderate (A) 1979-05-25 6.07 1870 Moderate (A) 1980-04-10 7.33 3450 Moderate (A) 1983-03-19 6.85 2580 Moderate (A) 1984-04-05 10.82 10500 Major (A) 1987-04-04 7.49 3040 Moderate (A) 1989-05-17 6.69 2160 Moderate (A) 1992-06-06 6.34 1840 Moderate (A) 1993-03-29 5.7 1380 Minor (A) 1998-05-11 6.02 1590 Moderate (A) 2003-03-22 5.7 1380 Minor (A) 2003-12-12 5.97 1550 Minor (A) 2003-12-25 5.47 1238 Minor (A) 2005-01-15 5.26 1120 Minor (A) 2005-03-29 5.55 1290 Minor (A) 2005-04-03 7.59 3180 Moderate (A) 2006-01-14 5.04 1000 Minor (A) 2006-01-19 5.82 1450 Minor (A) 2007-04-17 6.8 2270 Moderate (A) 2008-03-10 5.09 1030 Minor (A) 2010-03-14 7.52 3090 Moderate none 2010-03-23 5.39 1190 Minor none 2010-03-31 6.13 1670 Moderate none 2011-03-11 8.03 3800 Major none 2011-04-18 6.25 1770 Moderate none 2011-08-29 7.88 3520 Moderate none 2011-09-08 7.51 3080 Moderate none 2011-12-08 5.58 1380 Minor none

MARFC Codes
Code Description
(!!!) Datum changed during this year.
(1) Backwater Effect.
(2) 15.77 ft also occurred on 11/25/1950 but only counted as one flood.
(3) Estimated from currrent USGS rating table.
(4) Estimated height from the USGS.
(5) Gage height at a different site and/or datum
(6) Discharge affected by Regulation or Diversion
(7) Due to changes, prior floods were based on present flood stage. Therefore, flood data could possibly be incomplete.
(8) Gage is a staff gage and not the offical USGS gage. Therefore, some floods may be missing from our study.
(9) Discharge effected by snow-melt, ice jam or debris jam break up
(A) Discharge affected to unknown degree by regulation or diversion.
(B) Month or day of occurrence is unknown or not exact.
(C) All or part of the record affected by urbanization, mining, agricultural changes, channelization, or other factors.
(D) Crest height adjusted to current datum.
(E) Estimated discharge.
(F) Only annual maximum peak available for this year.
(O) This flood occurred at a previous flood stage that is lower than the current flood stage. This is only a historical flood.
** Crest information looks reasonable despite potential problems. This data was used in our study.
*** Crest information looks unreliable and incomplete and was not used in our flood frequency study.
**** Gauge was discontinued in 2004. 2004 and later was not used in our study.
none No code

Updated: 08:58 AM Jun 28, 2012