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USGS 01403900 Bound Brook at Middlesex NJ


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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 analysis.


LOCATION.--Lat 40°35'06", long 74°30'28" referenced to North American Datum of 1983, Green Brook Township, Somerset County, NJ, Hydrologic Unit 02030105, on downstream right wingwall of bridge on Sebrings Mills Road (Greenbrook Road) at Middlesex, 0.4 mi downstream of mouth of Green Brook, and 2.3 mi upstream of mouth.
DRAINAGE AREA.--48.4 mi2.
PERIOD OF RECORD.--June 1972 to September 1977, April 1996 to September 1998, February 2004 to September 2011 and February 2013 to current. Prior to October 1977, located on right bank, 107 ft upstream of bridge on Sebrings Mill Road, published as "Green Brook at Middlesex, NJ." Operated as a crest-stage partial-record station water years 1992 to 1995, and 1999 to 2003.
REVISED RECORDS.--WDR US-2011: 1996(M), 1997(M), 1999(M), 2007(M), 2010(M).
GAGE.--Water-stage and precipitation recorder with telemetry and crest-stage gage. Datum of gage is 26.52 ft above NGVD of 1929. Continuous gage 1972-77 at site 130 ft upstream, datum at NGVD of 1929.
REMARKS.--Records good, except for estimated discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge 7,000 ft3/s, Aug 2, 1972, gage height, 41.18 ft, site and datum then in use; minimum discharge, 2.5 ft3/3, Jul 21, 1974.
PERIOD OF RECORD1.--Water years 1974, 1996-98, 2001 to current year.
REMARKS1.--Samples were collected as part of the Long Island-New Jersey National Water Quality Assessment Program (LINJ NAWQA).
1 Water-Quality Records

Peak Flood Chart

Gage Photo

Rain gage data is available from this location at this link.

This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
All 2 Available Parameters for this site
00060 Discharge 2007-10-01  2016-10-24
00065 Gage height 2007-10-01  2016-10-24

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Discharge, cubic feet per second

Most recent instantaneous value: 12   10-24-2016   23:00 EDT
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Daily discharge, cubic feet per second -- statistics for Oct 24 based on 16 years of record more
Most Recent
Value Oct 24
Median Mean 75th
7.0 11 12 24 43 55 249

Gage height, feet

Most recent instantaneous value: 1.49   10-24-2016   23:00 EDT
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