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ALL DATA ARE AT LOCAL TIME



USGS 01402000 Millstone River at Blackwells Mills NJ

PROVISIONAL DATA SUBJECT TO REVISION

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National Weather Service flood stage for this gage is 9.0 ft.

Forecasts for this gage are issued by the National Weather Service routinely year-round.
Forecast information is available here.


gage photo LOCATION.--Lat 40°28'30", long 74°34'33" referenced to North American Datum of 1983, Hillsborough Township, Somerset County, NJ, Hydrologic Unit 02030105, on left bank 30 ft downstream from highway bridge at Blackwells Mills, and 0.3 mi downstream from Six Mile Run.
DRAINAGE AREA.--258 mi2.
PERIOD OF RECORD.--June 1903 to December 1904 (gage heights only), August 1921 to current year. Monthly discharge only for some periods, published in WSP 1302. Published as "at Millstone" 1903-04.
GAGE.--Water-stage recorder. Concrete control since Nov. 18, 1933. Datum of gage is 26.97 ft above NGVD of 1929. June 27, 1903 to Dec. 31, 1904, nonrecording gage at bridge 2.0 mi downstream at Millstone at different datum. Aug. 4, 1921 to Aug. 16, 1928, nonrecording gage at present site and datum.
COOPERATION.--Funding for this gage is provided by the New Jersey Water Supply Authority, the New Jersey Department of Environmental Protection, and the U.S. Geological Survey.

Boating Safety Tips

This station managed by the New Jersey Water Science Center.

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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: 388   10-25-2014  10:15 EDT
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Daily discharge, cubic feet per second -- statistics for Oct 25 based on 92 years of record more
Min
(1948)
25th
percen-
tile
Median 75th
percen-
tile
Mean Most Recent
Instantaneous
Value Oct 25
Max
(2010)
38 79 114 220 231 388 2060


Gage height, feet

Most recent instantaneous value: 2.36   10-25-2014  10:15 EDT
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