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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 01381400 Whippany River near Morristown 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°48'44", long 74°30'43" referenced to North American Datum of 1983, Morris Township, Morris County, NJ, Hydrologic Unit 02030103, on left downstream wingwall of bridge on Sussex Avenue, 1.9 mi northwest of Morristown, and 2.7 mi upstream from Lake Pocahontas Dam.
DRAINAGE AREA.--14.0 mi2.
PERIOD OF RECORD.--Occasional low-flow measurements, water years 1964-1972. Continuous-record discharge station, August 1995 to current year.
REVISED RECORDS.--WDR US-2006: 1997, 1999, 2004(M), 2005(M). WDR US-2011: 1997(M), 1999(M), 2006(M), 2007(M), 2010(M).
GAGE.--Water-stage recorder with telemetry and crest-stage gage. Datum of gage is 310 ft above NGVD of 1929 (from topographic map).
REMARKS.--Records good, except estimated discharges, which are fair. Water diverted upstream at Clyde Potts Reservoir on Harmony Brook for municipal supply by the Southeast Morris County Municipal Utilities Authority. Discharges above 900 ft3/s from rating curve extension on basis of contracted-opening and flow-over-road computations.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 2,300 ft3/s, Aug 28, 2011, gage height, 10.42 ft, from rating curve extended above 900 ft3/s on basis of contracted-opening and flow-over-road computations; minimum discharge, 1.7 ft3/s, Aug 7, 1999.

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
00060 Discharge 1995-08-24  2017-12-11
00065 Gage height 2007-10-01  2017-12-11

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Discharge, cubic feet per second

Most recent instantaneous value: 9.72 12-11-2017   11:00 EST
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Daily discharge, cubic feet per second -- statistics for Dec 11 based on 20 years of record more
Most Recent
Value Dec 11
Median Mean 75th
5.02 9.72 10 22 43 48 339

Gage height, feet

Most recent instantaneous value: 1.94 12-11-2017   11:00 EST
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