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°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.
PERIOD OF RECORD.--
Occasional low-flow measurements, 1964-72.
Continuous-record gaging station, August 1995 to current year.
WDR US-2006: 1997, 1999, 2004(M), 2005(M). WDR
US-2011: 1997(M), 1999(M), 2006(M), 2007(M), 2010(M).
Water-stage recorder with telemetry and crest-stage gage.
Datum of gage is 310 ft above NGVD of 1929 (from topographic
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
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 2,300
/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,
/s, Aug 7, 1999.