USGS Water-Year Summary 2023
01400500 RARITAN RIVER AT MANVILLE, NJ
LOCATION - Lat 40°33'20", long 74°34'58" referenced to North American Datum of 1983, Bridgewater Township, Somerset County, NJ, Hydrologic Unit 02030105, on left bank at downstream side of bridge on North Main Street (Finderne Avenue) at Manville, and 1.4 mi upstream from Millstone River.
DRAINAGE AREA - 490 mi².
REVISIONS HISTORY - WSP 1552: 1904, 1906, 1922, 1923(M), 1924-25, 1926-29(M), 1930, 1932-33(M), 1924-54. WDR NJ-75-1: 1964(M), 1969(M), 1970(P), 1971(P), 1972(P), 1973(P), WDR NJ-02-1: 2000(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 1903 to March 1907 (published as "at Finderne"), August 1908 to April 1915 (gage heights only, published in WSP 521), August 1921 to current year. Monthly discharge only for some periods, published in WSP 1302.
GAGE - Water-stage recorder with telemetry. Datum of gage is 20.61 ft above NGVD of 1929. Prior to Aug 15, 1923, non-recording gage on downstream side of highway bridge at same site and datum. Between Jun 9, 1978 and Jun 7, 1979, gage temporarily relocated at site 1.4 mi downstream, just upstream from Millstone River, because of reconstruction of highway bridge. Between Oct 1, 2006 and Mar 9, 2008, gage temporarily relocated at site 0.4 mi downstream, just upstream of an abandoned railroad bridge, because of reconstruction of highway bridge.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 77,600 ft³/s, from rating curve extended above 15,000 ft³/s on basis of slope-area computation of peak flow, Sep 16, 1999, gage height 27.10 ft; maximum gage height, 27.49 ft, Sep 17, 1999; minimum discharge, 17 ft³/s, Sep 19, 1964.
WATER-QUALITY RECORDS
PERIOD OF RECORD -
DISCRETE DATA:
Water years 1923-25, 1959-74, 1976-97, 2008 to 2012.
CONTINUOUS DATA:
Dissolved Oxygen: August-September 2003, April 2008 to current year.
Dissolved Oxygen, Percent of Saturation: August-September 2003, April 2008 to current year.
pH: August-September 2003, April 2008 to current year.
Specific Conductance: August-September 2003, April 2008 to current year.
Water Temperature: August-September 2003, April 2008 to current year.
Turbidity: April 2008 to current year.
EXTREMES FOR PERIOD OF DAILY RECORD -
DISSOLVED OXYGEN: Maximum, 18.2 mg/L, Mar 4, 2009; minimum, 4.8 mg/L May 29 and 30, 2016.
DISSOLVED OXYGEN, PERCENT OF SATURATION: Maximum, 169%, July 30 2014; minimum, 58%, May 29 and 30, 2016.
pH: Maximum, 9.5 standard units, Mar 1, 2, 2009; minimum, 6.8 standard units, Dec 12, 13, 2008, Dec 27, 2009, Jul 1 and 2, 2013, May 1 2014, July 31, 2016 and August 1, 2016.
SPECIFIC CONDUCTANCE: Maximum, 3,190 microsiemens/cm, Feb 02, 2011; minimum, 86 microsiemens/cm, Sep 8, 2011.
WATER TEMPERATURE: Maximum, 32.1°C, Jul 22,23, 2011; minimum, -0.3°C, Dec 27, 2010.
TURBIDITY: Maximum, 1,200 FNU, Mar 30, 2009; minimum, <0.5 FNU on many days.