Delaware River at Trenton, Mercer County NJ (TREN4)
Gage Location: Mercer County, New JerseySite Location: Mercer County, New Jersey
Latitude: 40.222Longitude: -74.778Elevation: 0 ft. MSLDrainage Area: 6780 Sq. Mi.
Minor Stage: 20 ft. Moderate Stage: 23 ft.Major Stage: 25 ft.
First Flood: 1687-05-29Last Flood: 2014-01-08 Crest: 20.76 ft.Datum change: 1928-10-03Number of Floods: 28

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1687-05-2929.8-9999MajorC1
1692-02-01-9999-9999MajorC1
1882-09-24-9999-9999MissingC1
1902-03-0223.6214000ModerateC1
1903-10-1128.52295000MajorC1 F1
1904-03-0830.3-9999MajorC1 C4
1913-03-2821.1160000MinorC1
1914-03-2920.2143000MinorC1
1925-02-1320.8154000MinorC1
1933-08-2520.43147000Minornone
1934-03-0522-9999MinorC7
1936-01-0324.43227000Moderatenone
1936-03-1323.11199000Moderatenone
1936-03-1924.43227000Moderatenone
1940-04-0120.62151600Minornone
1942-05-2421.12161200Minornone
1952-12-1220.07139000Minornone
1955-08-2028.6329000MajorF2
1984-05-3020.64152000MinorC2 F2
1986-03-1620.22140000MinorC2 F2
1996-01-2022.2179000MinorC2 F2
2004-09-1923.41201000ModerateC2 F2
2005-04-0425.33242000MajorC2 F2
2006-06-2925.09237000MajorC2 F2
2011-03-1220.59147000Minornone
2011-08-2920.49146000Minornone
2011-09-0823.11195000Moderatenone
2014-01-0820.76151000Minornone



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: 08:00 PM May 28, 2014