During winter months, cold and ice may
result in inaccurate real-time lake or reservoir elevation data.
Adjustments or deletions of this data can only be done after detailed
Funding for this site is provided by:
Lat 40°57'23", long 74°01'46"
referenced to North American Datum of 1983, Oradell Borough, Bergen
County, NJ, Hydrologic Unit 02030103, at dam on Hackensack River at
Oradell, 0.8 mi upstream of Hirshfeld Brook, and 2.2 mi west of
PERIOD OF RECORD.--
Water years 2011 to current year. From
October 1923 to October 2010, month-end elevation and contents were
provided by United Water New Jersey.
WDR NJ-84-1: Spillway elevation, WDR
NJ-89-1: Capacity, WDR NJ-99-1: 1998 (elevation, contents).
Water-stage recorder with telemetry. Datum of gage is
NGVD of 1929.
United Water New Jersey.
Reservoir is formed by hollow concrete dam, completed
in 1922. Capacity at spillway level, 3,507,000,000 gal, elevation,
23.16 ft. Flow regulated by seven sluice gates (7 by 9 ft). Prior to
May 1990, water was released for diversion by United Water New Jersey,
0.6 mi downstream from dam for municipal supply. Water is presently
diverted from Oradell Reservoir at Haworth by Suez, formerly United
Water New Jersey, for municipal supply. Annual extremes beginning in
water year 2014 can be obtained by using this link
. Prior to water
year 2014, annual extremes can be obtained on the respective annual
water year summary
EXTREMES FOR PERIOD OF RECORD.--
Maximum contents, 4,450,000,000
gal, Aug 28, 2011, elevation, 26.30 ft; minimum contents, 1,338,000,000
gal, Nov 20, 2017, elevation, 13.72 ft.