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**NOTICE: The New Jersey Water Science Center has transitioned to a new data management software package. While you may not have noticed this transition, some sites may have problems or delays in being updated. We are actively monitoring these conditions and are resolving them as quickly as possible. See the Dec 8 news entry for more information at: https://help.waterdata.usgs.gov/news


ALL DATA ARE AT LOCAL TIME


USGS 01463620 Assunpink Creek near Clarksville NJ

PROVISIONAL DATA SUBJECT TO REVISION

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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.

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SURFACE-WATER RECORDS

LOCATION.--Lat 40°16'11", long 74°40'19" referenced to North American Datum of 1983, Lawrence Township, Mercer County, NJ, Hydrologic Unit 02040105, on left bank 250 ft upstream from bridge on Quaker Bridge Road (County Route 533), 0.7 mi downstream from dam at Lake Mercer, 1.9 mi south of Clarksville, 2.0 mi upstream from Shipetaukin Creek, and 7.6 mi upstream from mouth.
DRAINAGE AREA.--34.3 mi2.
PERIOD OF RECORD.--Occasional low-flow measurements, water years 1963-67. Continuous-record discharge station, water years 1973-81 and March 1992 to current year. Continuous-record discharge station for growing season only (April through October), water years 1996-2000.
GAGE.--Water-stage recorder with telemetry and crest-stage gage. Datum of gage is 49.28 ft above NGVD of 1929.
REMARKS.--Records fair, except for estimated discharges, which are poor. Regulation from several flood-control dams since the late 1970's and from ponds upstream. Diversions for irrigation upstream from station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,250 ft3/s, Aug 29, 2011, gage height, 9.74 ft; minimum discharge, 0.88 ft3/s, Sep 11, 2010.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Aug 28, 1971 reached a stage of 10.9 ft, discharge, 1,500 ft3/s.

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
All 2 Available Parameters for this site
  
00060 Discharge 1992-03-19  2017-05-29
00065 Gage height 2007-10-01  2017-05-29

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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: 52.4 05-29-2017   01:00 EDT
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Daily discharge, cubic feet per second -- statistics for May 29 based on 33 years of record more
Min
(1977)
25th
percen-
tile
Median Mean 75th
percen-
tile
Most Recent
Instantaneous
Value May 29
Max
(1978)
9.60 19 31 38 42 52.4 120


Gage height, feet

Most recent instantaneous value: 4.33 05-29-2017   01:00 EDT
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