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:
40°31'47", long 74°35'18" referenced to North
American Datum of 1983, Manville Borough, Somerset County, NJ,
Hydrologic Unit 02030105, at downstream center pier on bridge on
Wilhouski Street (Manville Causeway) over bypass channel at Weston, in
Manville, 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.
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,
Cooperative Network Site Descriptor:
Perchlorate Assessment special study site.
Physical measurements and samples for
laboratory analyses were provided by personnel of the NJ Department of
Environmental Protection. Determination of perchlorate was performed by
TestAmerica Laboratories, Inc.
1 Water-Quality Records
National Weather Service flood stage for this
gage is 11.5 ft.