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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
01402500 MILLSTONE RIVER AT MILLSTONE, NJ
LOCATION - Lat 40°30'10", long 74°35'15" referenced to North American Datum of 1983, Millstone Borough, Somerset County, NJ, Hydrologic Unit 02030105, on left bank at downstream side of bridge on County Route 514 (Amwell Road), in Millstone Borough, 2.7 mi south of Manville, and 4.4 mi upstream from mouth.
DRAINAGE AREA - 264 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Continuous-record discharge station, water years 1903-04. Continuous-record gage-height station, water years 1999 to current year.
GAGE - Water-stage recorder with telemetry and crest-stage gage. Datum of gage is 24.4 ft above NGVD of 1929.
REMARKS - Diurnal fluctuations in gage height possibly due to flow pattern in sewage effluent that enter the river upstream of gage. 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 FOR PERIOD OF RECORD - Maximum gage height, 22.34 ft, Aug 28, 2011.
