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**NOTICE: The New Jersey Water Science Center has transitioned to a new data management software package. While you may not have noticed this transition, some sites may have problems or delays in being updated. We are actively monitoring these conditions and are resolving them as quickly as possible. See the Dec 8 news entry for more information at: https://help.waterdata.usgs.gov/news


USGS 01403150 West Branch Middle Brook near Martinsville 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°36'44", long 74°35'27" referenced to North American Datum of 1983, Bridgewater Township, Somerset County, NJ, Hydrologic Unit 02030105, on left bank 150 ft upstream from bridge on Crim Road, 1.4 mi northwest of Martinsville, and 1.8 mi upstream from confluence with East Branch Middle Brook.
DRAINAGE AREA.--1.99 mi2.
PERIOD OF RECORD.--Continuous-record discharge station June 1979 to current year.
REVISED RECORDS.--WDR NJ-91-1: 1990. WDR NJ-96-1: 1980-94 (P), WDR NJ-99-1: 1990 (M), 1997 (M).
GAGE.--Water-stage and precipitation recorder with telemetry. Datum of gage is 240.48 ft above NGVD of 1929 (levels by Somerset County).
REMARKS.--Records fair, except for estimated discharges and discharges below 1 ft3/s, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,510 ft3/s, Aug 28, 2011, gage height 9.35 ft; minimum discharge, 0.00 ft3/s, Sep 19, 1980.

Peak Flood Chart

Gage Photo

National Weather Service flood stage for this gage is 6 ft.

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 1981-05-01  2018-01-19
00065 Gage height 2006-07-18  2018-01-19

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Discharge, cubic feet per second

Most recent instantaneous value: 0.17 01-19-2018   08:55 EST
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Daily discharge, cubic feet per second -- statistics for Jan 19 based on 37 years of record more
Most Recent
Value Jan 19
Median 75th
Mean Max
0.11 0.17 1.1 1.6 3.6 6.8 144

Gage height, feet

Most recent instantaneous value: 2.20 01-19-2018   08:55 EST
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