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°53'05", long 74°13'34"
referenced to North American Datum of 1983, Totowa Borough, Passaic
County, NJ, Hydrologic Unit 02030103, on left bank 0.6 mi downstream
from Beatties Dam in Little Falls, and 1.0 mi upstream from Peckman
PERIOD OF RECORD.--
September 1897 to current year. Monthly
discharge only for September 1897, published in WSP 1302. Published as
"at Paterson", September 1897 to September 1955.
Water-stage recorder with telemetry and crest-stage gage.
Datum of gage is 120.00 ft above NGVD of 1929 (levels by Passaic Valley
Water Commission). From Jan 8, 1933 to Sep 30, 1955, water-stage
recorder at site 3.7 mi downstream at Paterson at NGVD of 1929 (levels
from New Jersey Geological Survey benchmark). Prior to Jan 8, 1933,
non-recording gage operated by the Society for Establishing Useful
Manufacturers and data were reviewed by the USGS.
Records good, except for estimated discharges, which
are fair. Significant fluctuations at medium and low flow due to
operation of hydroelectric plant at Beatties Dam. Flow regulated by
reservoirs in Rockaway, Pequannock, Wanaque, and Ramapo River
subbasins. Large diversions for municipal supply from Passaic River
above Beatties Dam, and from Rockaway, Pequannock, Pompton, Ramapo, and
Wanaque Rivers. In addition, the New Jersey-American Water Company
(formerly Commonwealth Water Company) diverts from Canoe Brook near
Summit and from Passaic River near Summit; that company, the city of
East Orange, and others also divert water for municipal supply by
pumping wells in the basin. Flow includes sewage effluent from several
treatment plants upstream of gage.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 31,700
/s, based on flow-over-dam computation, Oct 10, 1903,
gage height, not available. Maximum discharge at present site and
datum, 20,800 ft3
/s, Aug 30, 2011, gage height, 14.19 ft;
Minimum discharge, 0.00 ft3
/s, July 3, 1904.
PERIOD OF RECORD.--
Water years 1963-96, 1998 to current
PERIOD OF DAILY RECORD.--
SPECIFIC CONDUCTANCE: October 1980 to
WATER TEMPERATURE: Water years 1963 to 1980 (once daily), September
1980 to November 1986. DISSOLVED OXYGEN: October 1970 to September 1980
(once daily). SUSPENDED-SEDIMENT DISCHARGE: August 1963 to July
Discrete water-quality data were collected as part of
New Jersey Ambient Surface-Water-Quality Monitoring Network
National Weather Service flood stage for this
gage is 7.0 ft.
Forecasts for this gage are issued by the National Weather Service
Forecast information is available here.