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°58'11", long 74°16'55"
referenced to North American Datum of 1983, Wayne Township, Passaic
County, NJ, Hydrologic Unit 02030103, on left bank just upstream of the
Passaic Valley Water Commission pumping station, 800 ft downstream of
confluence of Pequannock and Ramapo Rivers, 140 ft upstream from bridge
on Jackson Avenue (Pompton Plains Cross Road), and 0.7 mi east of
PERIOD OF RECORD.--
March 1903 to December 1904, May 1940 to
current year. Monthly discharge only for some periods, published in WSP
WSP 1202: 1945(M). WDR-US-08: 1963(M).
Water-stage recorder with telemetry, crest-stage gage,
and concrete control. Datum of gage is 160.00 ft above NGVD of 1929.
March 1903 to December 1904, non-recording gage on main spillway of dam
2,000 ft upstream at different datum. May 1940 to September 1964 two
water-stage recorders, each above a concrete dam about 2,000 ft
upstream at datum 14.46 ft higher.
Records good, except for estimated discharges which
are fair. Former Pompton feeder canal located about 2,000 ft upstream
diverted an average of about 43 cfs to Morris canal prior to 1924.
Water diverted from reservoirs on Pequannock and Wanaque Rivers, from
Pompton River to Point View Reservoir, and from Ramapo River to Wanaque
Reservoir and Oradell Reservoir (from February 1985) for municipal
supply. Discharges for water years 1965-68 have been adjusted in USGS
databases in water year 2004 to reflect only flow over weir. Previously
published discharges for water years 1965-68 included flow over the
weir, plus pumpage to, or minus releases from Point View Reservoir
through Passaic Valley Water Commission's Jackson Avenue Pumping
Station. All published discharges, since water year 1969, have included
only flow over the weir. Flow regulated by Canistear, Oak Ridge,
Clinton, Charlotteburg, and Echo Lake Reservoirs on Pequannock River
and by Greenwood Lake (see 01383000), Monksville, and Wanaque (see
01386990) Reservoirs on Wanaque River. Beginning in 2007, stage and
discharge fluctuations occur at the location during high flow probably
due to the operation of automatic floodgates on the Ramapo River at
Pompton Lakes Dam (see 01388000).
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge 28,300
/s, Oct 10, 1903, affected by dam failures at Pompton
Lake dam and other dams upstream, from computation of peak flow over
dam, gage height 14.30 ft, site and datum then in use, maximum gage
height 25.24 ft, Aug 29, 2011, current site and datum; minimum
discharge 0.00 ft3
/s, Aug 14 1904.
PERIOD OF RECORD.--
Water years 1962-69, 1971-75, 1979-80, 1992,
1994, 1998 to current year.
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 16.0 ft.
Forecasts for this gage are issued by the National Weather Service
Forecast information is available here.
Rain gage data is available from this location at this link.