Delaware River at Frenchtown, Hunterdon County NJ (FREN4)
Gage Location: Hunterdon County, New JerseySite Location: Hunterdon County, New Jersey
Latitude: 40.528Longitude: -75.067Elevation: 99.88 ft. MSLDrainage Area: 6420 Sq. Mi.
Minor Stage: 16 ft. Moderate Stage: 18 ft.Major Stage: 20 ft.
First Flood: 1903-10-10Last Flood: 2011-09-09 Crest: 19.02 ft.Datum change: 2005-10-01Number of Floods: 12

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1903-10-1024.4-9999MajorC1
1936-03-1321.7-9999MajorC1
1936-03-1921.93-9999MajorC1
1942-05-2418.6-9999ModerateC1
1952-12-1217.3-9999MinorC1
1955-08-2027.79-9999MajorC1
2004-09-1920.7-9999MajorC1
2005-04-0423.6-9999MajorC1
2006-06-2922.9-9999Majornone
2011-03-1217.21-9999Minornone
2011-08-2916.68-9999Minornone
2011-09-0919.02-9999Moderatenone



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: 07:20 AM Nov 12, 2013