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USGS 01394000 West Branch Rahway River at Millburn 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.

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LOCATION.--Lat 40°43'54", long 74°18'27" referenced to North American Datum of 1983, Millburn Township, Essex County, NJ, Hydrologic Unit 02030104, on right bank 100 ft upstream from Diamond Mill Pond Dam, 1,000 ft upstream from Glen Avenue in Millburn, and 1.9 mi upstream from confluence with East Branch.
DRAINAGE AREA.--7.10 mi2.
PERIOD OF RECORD.--Continuous-record gaging station, water years 1940-50. Annual maximum, water years 1973, 1998 to current year.
GAGE.--Water-stage recorder with telemetry and crest-stage gage. Datum of gage is 173.65 ft above NGVD of 1929.
REMARKS.--Flow regulated by Orange Reservoir 2.5 mi upstream and several small ponds. 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 link.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 2,840 ft3/s, Sep 16, 1999, gage height, 5.2 ft (from high-water mark).

Peak Flood Chart

Gage Photo

This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
All 2 Available Parameters for this site
00010 Temperature, water 2017-10-22  2018-02-19
00065 Gage height 2010-04-14  2018-02-19

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Instantaneous-data availability statement

Gage height, feet

Most recent instantaneous value: 1.56 02-19-2018   20:00 EST
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