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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01400010 NORTH BRANCH RARITAN RIVER AT SOUTH BRANCH, NJ
LOCATION - Lat 40°33'24", long 74°41'15" referenced to North American Datum of 1983, Bridgewater Township, Somerset County, NJ, Hydrologic Unit 02030105, on upstream left wingwall of bridge on Old York Road (County Route 567), 0.8 mi northeast of village of South Branch, and 500 ft upstream from confluence with South Branch Raritan River.
DRAINAGE AREA - 190 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Annual maximum gage, water years 1993 to 2013. Continuous-record gage-height station, October 2013 to current year.
GAGE - Water-stage recorder with telemetry and crest-stage gage. Datum of gage is 46.03 ft above NGVD of 1929.
REMARKS - Peak stages may be affected by variable-stage backwater from the confluence with the South Branch Raritan River. Annual peak data can be obtained by selecting Peak streamflow from the 'Available data for this site' drop-down menu above or by using this link.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Aug 28, 1971 reached a stage of 15.5 ft (from high-water mark).
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 18.98 ft, Sep 16, 1999.
