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ALL DATA ARE AT LOCAL TIME


* IMPORTANT: Next Generation Station Page

USGS 01382800 Pequannock River at Riverdale NJ

PROVISIONAL DATA SUBJECT TO REVISION

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SURFACE-WATER RECORDS

LOCATION.--Lat 40°59'55", long 74°17'53" referenced to North American Datum of 1983, Morris County, NJ, Hydrologic Unit 02030103, at downstream side of bridge on Paterson-Hamburg Turnpike in Riverdale, 0.6 mi upstream from Wanaque River, and 2.8 mi upstream of mouth.
DRAINAGE AREA.--83.9 mi2.
PERIOD OF RECORD.--Annual maximum gage, water years 1981-82. Occasional low-flow measurements, water years 1963, 1998, 2001-02, 2005. Continuous-record discharge station, water years 1993-97, and August 2011 to current year.
GAGE.--Water-stage recorder with telemetry and crest-stage gage. Datum of gage is 187.90 ft above NGVD of 1929. Prior to August, 2011 gage located on right bank 5 ft upstream of bridge on Paterson-Hamburg Turnpike at same datum.
REMARKS.--Records fair, except for estimated discharges, which are poor. Flow regulated by Canistear, Oak Ridge, Clinton, Charlotteburg, and Echo Lake Reservoirs. Water diverted at Charlotteburg Reservoir for municipal supply for city of Newark.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 6,900 ft3/s, Aug 28, 2011, gage height, 12.57 ft; minimum discharge, 3.6 ft3/s, Sep 8, 1995.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Apr. 5, 1984, reached a stage of 11.5 ft (downstream side of bridge) and 13.6 ft (upstream side of bridge), from floodmarks.

Peak Flood Chart

Gage Photo

National Weather Service flood stage for this gage is 8 ft.

This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
  
1993-10-23  2019-12-10
2011-08-01  2019-12-10







 (7)
 

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Summary of all available data for this site
Instantaneous-data availability statement


Discharge, cubic feet per second

Most recent instantaneous value: 355 12-10-2019   11:30 EST
Graph of  Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Dec 10 based on 11 water years of record more
Min
(2018)
25th
percen-
tile
Median 75th
percen-
tile
Mean Most Recent
Instantaneous
Value Dec 10
Max
(2012)
19.1 38 55 140 148 355 650


Gage height, feet

Most recent instantaneous value: 3.54 12-10-2019   11:30 EST
Graph of  Gage height, feet

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