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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
01467150 COOPER RIVER AT HADDONFIELD, NJ
LOCATION - Lat 39°54'11", long 75°01'17" referenced to North American Datum of 1983, Cherry Hill Township, Camden County, NJ, Hydrologic Unit 02040202, on right bank just upstream of dam on Wallworth Lake in Pennypacker Park, 200 ft upstream from bridge on State Highway 41 (Kings Highway) in Haddonfield, 0.6 mi upstream from North Branch Cooper River, and 7.7 mi upstream from mouth.
DRAINAGE AREA - 17 mi².
REVISIONS HISTORY - WDR NJ-1969: 1967(M). WDR NJ-82-2: Drainage area. WDR NJ-04-1: 1971(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - Continuous-record discharge station, October 1963 to current year.
GAGE - Water-stage recorder with telemetry above concrete dam. Datum of gage is 7.62 ft above NAVD of 1988.
REMARKS - Records fair, except for estimated discharges and discharges below 20 ft³/s, which are poor. Bypass gates were installed on both sides of the dam in August 1987. Occasional regulation at low-flow from small lakes upstream. Small wastewater treatment plants in the basin were regionalized after the summer of 1987, significantly reducing low-flow.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,300 ft³/s, Jul 13, 2004, gage height, 6.27 ft; minimum discharge, 0.80 ft³/s, Nov 13, 1972, regulation from unknown source.
WATER-QUALITY RECORDS
PERIOD OF RECORD - DISCRETE DATA: Water years 1968-79, 1991 to current year. CONTINUOUS DATA: Specific Conductance, February 2020 to current year. Suspended Sediment Discharge, March 1968 to September 1969. Water Temperature, March 1968 to August 1969 (recorded once daily), October 1998 to September 2001, February 2020 to current year.
REMARKS - Discrete water-quality data were collected as part of the New Jersey Ambient Surface-Water-Quality Monitoring Network. The accuracy of continuous water-quality data can be found here.
