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°19'11", long 74°12'51"
referenced to North American Datum of 1983, Colts Neck Township,
Monmouth County, NJ, Hydrologic Unit 02030104, on downstream left bank
on bridge on Hillsdale Road, 1.7 mi east of Marlboro, and 3.6 mi
upstream from mouth.
PERIOD OF RECORD.--
Annual maximum gage, October 1980 to
September 2003. Continuous-record discharge station, August 2003 to
Water-stage recorder with telemetry and crest-stage gage.
Datum of gage is 80 ft above NGDV 1929 (from topographic map). Prior to
Aug 12, 2003 at datum 10.00 ft higher. Online peaks have been adjusted
to current datum.
Records fair, except for estimated discharges, which
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 1,370 ft³/s,
Sep 20, 1989, gage height, 20.16 ft, from crest-stage gage, adjusted to
current datum; minimum discharge, 1.8 ft³/s, Aug 29, 2010.
Gage was temporarily removed due to bridge
construction on December 12, 2017. Construction is planned to take 12
months. A temporary gage was installed upstream on Boundary Road.
Please click on this station number
01407287 to access this
Service flood stage for this gage is 18 ft.