Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins
  • Data formats changed in August 2016, and additional water-data changes will be coming through 2017. Read more here
  • Full News RSS icon
Click to hide state-specific text


USGS 01382800 Pequannock River at Riverdale NJ


Click to hidestation-specific text
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 analysis.

Funding for this site is provided by:


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, water years 1981-82. Occasional low-flow measurements, water years 1963, 1998, 2001-02, 2005. Continuous-record gaging 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

This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
All 2 Available Parameters for this site
00060 Discharge 2011-08-01  2016-10-22
00065 Gage height 2011-08-01  2016-10-22

Graph w/ stats
Graph w/o stats
Graph w/ (up to 3) parms
Days  (7)

  -- or --
Begin date

End date

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

Discharge, cubic feet per second

Most recent instantaneous value: 32   10-22-2016   11:30 EDT
Graph of  Discharge, cubic feet per second

Add up to 2 more sites and replot for "Discharge, cubic feet per second"

 Add site numbers

Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

Daily discharge, cubic feet per second -- statistics for Oct 22 based on 8 years of record more
Most Recent
Value Oct 22
Median Mean 75th
15 18 32 66 182 200 910

Gage height, feet

Most recent instantaneous value: 2.11   10-22-2016   11:30 EDT
Graph of  Gage height, feet

Add up to 2 more sites and replot for "Gage height, feet"

 Add site numbers

Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert