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Estimated flood stage for this gage is 12.3 feet.
LOCATION. --Lat 40°36'00", long 74°40'26" referenced to North American Datum of 1983, Bridgewater Township, Somerset County, NJ, Hydrologic Unit 02030105, on left bank, at upstream side of bridge on County Route 614 (Easton Turnpike) in village of North Branch, 0.1 mi downstream from River Brook, and 3.6 mi upstream from confluence with South Branch Raritan River.
DRAINAGE AREA. --174 mi2.
PERIOD OF RECORD.--Continuous-record gaging station, water years 1977-81. Annual maximum, water years 1982-95, 1997 to current year.
GAGE. --Water-stage recorder. Datum of gage is 56.94 ft above NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 27,800 ft3/s, Sep 16, 1999, gage height, 21.53 ft.
COOPERATION. --Funding for this gage is provided by Somerset County New Jersey and the U.S. Geological Survey.