USGS Water-Year Summary 2023
01457500 DELAWARE RIVER AT RIEGELSVILLE, NJ
LOCATION - Lat 40°35'41", long 75°11'23" referenced to North American Datum of 1983, Pohatcong Township, Warren County, NJ, Hydrologic Unit 02040105, on left bank, upstream side of suspension bridge at Riegelsville, 600 ft upstream from Musconetcong River (flow of which is included in the records for this station since Oct. 1, 1931), and at river mile 174.8.
DRAINAGE AREA - 6,328 mi².
PERIOD OF RECORD - Continuous-record discharge station, water years 1906-71, and October 2018 to current year. Annual maximum gage, water years 1972-2007. Continuous-record gage-height station with annual maximum discharge, water years 2008-2018.
GAGE - Water-stage, precipitation, and water temperature recorder with telemetry. Datum of gage is 124.24 ft above NAVD of 1988.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Oct 10, 1903 reached a gage height of 35.9 ft, discharge 275,000 ft³/s
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 340,000 ft³/s, from rating curve extended above 160,000 ft³/s on basis of slope-area computation of peak flow, Aug 19, 1955, gage height, 38.85 ft.
PERIOD OF RECORD - DISCRETE DATA: Water years 1934, 1943, 1950, 1960-79, 1991 to June 2009. CONTINUOUS DATA: Water Temperature: March 2019 to current year.