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
2014-01-0820.76151000MinorF3



Codes and description

C1|Crest information during this period may be incomplete and therefore was not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information during this period 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: 07:31 AM Dec 19, 2014