Delaware River at Riegelsville, Warren County NJ (RGLN4)
Gage Location: Warren County, New JerseySite Location: Bucks County, Pennsylvania
Latitude: 40.595Longitude: -75.19Elevation: 125.12 ft. MSLDrainage Area: 6328 Sq. Mi.
Minor Stage: 22 ft. Moderate Stage: 26 ft.Major Stage: 30 ft.
First Flood: 1841-01-08Last Flood: 2011-09-09 Crest: 28.06 ft.Datum change: 1924-02-28Number of Floods: 40

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1841-01-08-9999250000MissingC1 F1
1903-10-1035.9275000MajorC1
1907-12-1122.5120000MinorC1
1913-03-2825144000MinorC1
1914-03-2923.4130000MinorC1
1920-03-1422.1120000MinorC1
1924-04-0823.1122000Minornone
1924-10-0124.2132000Minornone
1925-02-1223.82128000Minornone
1926-11-1722.6118000Minornone
1933-08-2525141000Minornone
1935-07-1023.2125000Minornone
1936-03-1229.8185000Moderatenone
1936-03-1932.45237000Majornone
1938-09-2323123000Minornone
1940-04-0126.47154000Moderatenone
1942-05-2427.5164000Moderatenone
1942-12-3122.88122800Minornone
1948-03-2323.28121300Minornone
1948-12-3124.5131900Minornone
1950-11-2722.5114700Minornone
1951-04-0124.03127800Minornone
1952-12-1225.4140000Minornone
1955-08-1938.85340000MajorF2
1955-10-1623.8133000MinorF2
1960-04-0522.6121000MinorF2
1973-06-3024.36139000MinorC2 F2
1973-12-2222.55118000MinorC2 F2
1977-03-1422.16117000MinorC2 F2
1983-04-1724.17137000MinorC2 F2
1984-05-3024.46140000MinorC2 F2
1986-03-1625.16147000MinorC2 F2
1996-01-2028.72187000ModerateC2 F2
2004-09-1930.95216000MajorC2 F2
2005-04-0434.07262000MajorC2 F2
2006-06-2933.62254000MajorC2 F2
2011-03-0722.35-9999Minornone
2011-03-1225.2-9999Minornone
2011-08-2924.56-9999Minornone
2011-09-0928.06175000Moderatenone



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