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  • Update May 5, 2016, North Carolina Water Science Center real-time data display up to date. Thank you for your patience.
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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.

USGS 01408029 Manasquan River near Allenwood NJ


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Estimated flood stage for this gage is 14.5 feet.

gage photoLOCATION. --Lat 40°08'48", long 74°07'20" referenced to North American Datum of 1983, Wall Township, Monmouth County, NJ, Hydrologic Unit 02040301, on left bank just downstream from pumping station of Manasquan Water Supply System, 1400 ft upstream from Hospital Road, 1.1 mi west of Allenwood, 1.2 mi downstream from Mill Run, 2.2 mi east of Squankum, and 7.9 mi upstream of mouth.
DRAINAGE AREA. --63.3 mi2.
PERIOD OF RECORD. --June 1990 to current year.
GAGE. --Water-stage recorder, water-quality monitor, and concrete control. Datum of gage is NGVD of 1929 (New Jersey Water Supply Authority benchmark). New Jersey Water Supply Authority pumps water from river just upstream of gage, which affects discharge and occasionally turbidity.
COOPERATION. --Funding for this gage is provided by the New Jersey Department of Environmental Protection, New Jersey Water Supply Authority and the U.S. Geological Survey.

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This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
All 5 Available Parameters for this site
00065 Gage height 2007-10-01  2016-05-05
00060 Discharge 2007-10-01  2016-05-05
00010 Temperature, water 2007-10-01  2016-05-05
00095 Specific cond at 25C 2007-10-01  2016-05-05
63680 Turbidity, Form Neph 2007-10-01  2016-05-05

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

Gage height, feet

Most recent instantaneous value: 8.25   05-05-2016  21:15 EDT
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Discharge, cubic feet per second

Most recent instantaneous value: 125   05-05-2016  21:15 EDT
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Daily discharge, cubic feet per second -- statistics for May 5 based on 24 years of record more
Median Mean 75th
Most Recent
Value May 5
11 40 65 74 92 125 223