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 54.07 ft above NAVD of 1988. Prior to Aug 12, 2003 at
datum 10.00 ft higher. Online peaks have been adjusted to current
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.
National Weather Service flood stage for
this gage is 18 ft.