USGS Water-Year Summary 2024

01396790 SPRUCE RUN RESERVOIR AT CLINTON, NJ

LOCATION - Lat 40°38'37", long 74°55'25" referenced to North American Datum of 1983, Union Township, Hunterdon County, NJ, Hydrologic Unit 02030105, at dam on Spruce Run, 0.5 mi north of Clinton, and 0.6 mi upstream from mouth.

DRAINAGE AREA - 41.3 mi².

REVISIONS HISTORY - WDR NJ-84-1: (M). WDR NJ-85-1: 1984.

SURFACE-WATER RECORDS

PERIOD OF RECORD - November 1963 to current year. Prior to October 2009, month-end contents and elevation provided by New Jersey Water Supply Authority.

GAGE - Water-stage recorder with telemetry. Datum of gage is National Geodetic Vertical Datum of 1929.

REMARKS - Reservoir is formed by earthfill dam with concrete spillway; dam completed in October 1963 with crest of spillway at elevation 273.00 ft. Usable capacity, 11,000,000,000 gal. Dead storage 300,000 gal. Reservoir used for water supply and recreation. Outflow mostly regulated by gates. Water is released to maintain minimum flow on the South Branch Raritan River and for municipal supply. Records given herein represent usable capacity. Records provided by New Jersey Water Supply Authority. Annual extremes beginning in water year 2014 can be obtained by using this link. Prior to water year 2014, annual extremes can be obtained on the respective annual water year summary. 

EXTREMES FOR PERIOD OF RECORD - Maximum contents, 11,862,000,000 gal, Sep 8, 2011, elevation, 274.84 ft; minimum contents, 3,100,000,000 gal, Oct 18, 1983, elevation, 246.68 ft.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1964, 2010-11.

REMARKS - Cooperative Network Site Descriptor: Development of Mercury-Bioaccumulation Factors special study site.