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 41°01'06", long 74°24'04"
referenced to North American Datum of 1983, West Milford Township,
Passaic County, NJ, Hydrologic Unit 02030103, on left bank 15 ft
downstream from culvert at crossover between northbound and southbound
lanes on State Route 23, 1,000 ft downstream from abandoned Macopin
Intake Dam, 0.6 mi downstream from Macopin River, and 2.8 mi northwest
PERIOD OF RECORD.--
January 1898 to March 1990, September 1992 to
current year. Monthly discharge only for some periods, published in WSP
1302. Records for January 1892 to December 1897, published in WSP 541,
have been found to be unreliable therefore should not be used.
WDR-US-2011: 2001 (P)
Water-stage recorder with telemetry and crest-stage gage.
Datum of gage is 549.17 ft above NGVD of 1929. Prior to May 22, 1970,
at site just upstream from Macopin Intake Dam, at datum 34.38 ft higher
(revised). May 22, 1970 to March 5, 1990, at site just upstream from
Macopin Intake Dam, at datum 20.83 ft higher.
Department of Public Affairs, Division of Water
Supply, City of Newark. Prior to May 22, 1970, discharge figures
provided by city of Newark.
Records fair, except for discharges above 1,000
/s and estimated discharges, which are poor. Flow
regulated by Canistear, Oak Ridge, Clinton, and Charlotteburg
Reservoirs, and Echo Lake. Water diverted at Charlotteburg Reservoir
for municipal supply of city of Newark.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 6,100
/s, Oct 10, 1903, gage height, 17.40 ft, site and datum
then is use; minimum discharge, not determined.
PERIOD OF RECORD.--
Water years 1924, 1962-69, 1973-79, 1991 to current year.
Dissolved Oxygen: July 2001.
Dissolved Oxygen, Percent of Saturation: July 2001.
Specific Conductance: July 2001.
Water Temperature: July 2001, July 2009 to October 2014.
Discrete water-quality data were collected as part of
New Jersey Ambient Surface-Water-Quality Monitoring Network
The accuracy of continuous water-quality data can be found here
EXTREMES FOR PERIOD OF DAILY RECORD.--
National Weather Service flood stage for this
gage is 5.5 ft.
Forecasts for this gage are issued by the National Weather Service
Forecast information is available here.
Verified water-temperature data are available
April through September. Data between October and March are only