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:
40°43'34", long 74°23'23" referenced to North
American Datum of 1983, Chatham Borough, Morris County, NJ, Hydrologic
Unit 02030103, on left bank 150 ft downstream from bridge on Stanley
Avenue in Chatham, 1.5 mi northwest of Summit Borough Hall, and 3.0 mi
upstream from Canoe Brook.
PERIOD OF RECORD.--
February 1903 to December 1911, October 1937
to current year. Monthly discharge only for some periods, published in
WDR NJ-86-1: 1984 (M), WDR NJ-04-1: 2003
Water-stage recorder with telemetry. Concrete control
since Sept. 19, 1938. Datum of gage is 193.51 ft above NGVD of 1929.
Prior to Dec 31, 1911, non-recording gage at bridge 150 ft upstream at
Records good, except for estimated discharges, which
are fair. Diversion from Osborn Pond by Commonwealth Water Company,
Bernards Division, during water years 1903-79. Flow includes sewage
effluent from several treatment plants upstream of gage.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 3,380
/s, Aug 2, 1973, gage height, 9.36 ft, from floodmark;
minimum discharge, 2.0 ft3
/s, Sep 11, 1944, since
PERIOD OF RECORD1.--
Water years 1960-97, 2001, 2004,
Cooperative Network Site Descriptor: Trace
Element Assessment (303d) special study site.
Physical measurements and samples for
laboratory analyses were provided by personnel of the NJ Department of
1 Water-Quality Records
National Weather Service flood stage for this
gage is 6.0 ft.
Forecasts for this gage are issued by the National Weather Service
Forecast information is available here.