During winter months, cold and ice may
result in inaccurate real-time gage height and streamflow data.
Adjustments or deletions of this data can only be done after detailed
Funding for this site is provided by:
Lat 40°31'47", long 74°35'18"
referenced to North American Datum of 1983, Manville Borough, Somerset
County, NJ, Hydrologic Unit 02030105, on left bank of main channel at downstream
side of bridge on Wilhouski Street (Manville Causeway), in
Weston, 0.8 mi south of
Alma White College, 1.5 mi upstream of confluence with Raritan River,
and 1.9 mi north of Millstone. Station is approximately 1.5 mi upstream
of confluence with Raritan
PERIOD OF RECORD.--
Water years 1997, 1999 to current year.
Water-stage recorder with telemetry and crest-stage gage.
Datum of gage is 21.9 ft above NGVD of 1929. Prior to Oct 17, 2017
water-stage recorder was located at downstream center pier on
bridge on Wilhouski Street (Manville Causeway) over bypass channel at
Under some flow conditions, gage is affected by
backwater from Raritan River. 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
EXTREMES FOR PERIOD OF RECORD.--
Maximum gage height, 23.21 ft,
Sep 17, 1999.
PERIOD OF RECORD1.--
Water years 1976-91,
1 Water-Quality Records
National Weather Service flood stage for this
gage is 11.5 ft.