Delaware River near Delaware Water Gap, Warren County NJ (TKSN4)
Gage Location: Warren County, New JerseySite Location: Monroe County, New Jersey
Latitude: 41.013Longitude: -75.086Elevation: 293.64 ft. MSLDrainage Area: 3850 Sq. Mi.
Minor Stage: 21 ft. Moderate Stage: 23 ft.Major Stage: 25 ft.
First Flood: 1955-08-19Last Flood: 2011-09-09 Crest: 24.94 ft.Datum change: 1967-10-01Number of Floods: 12

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1955-08-1937.4260000MajorC1 F2
1973-06-3023.82103000ModerateF2
1978-01-1022.9974100MinorF2
1984-05-3021.7797300MinorF2
1986-03-1624110000ModerateF2
1996-01-2028.4155000MajorC5 F2
2004-09-1930.32176000MajorF2
2005-04-0333.25215000MajorF2
2006-06-2933.87225000MajorF2
2011-03-1222.88-9999Minornone
2011-08-2923.21-9999Moderatenone
2011-09-0924.94128000Moderatenone



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