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USGS 01396500 South Branch Raritan River near High Bridge NJ


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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.


LOCATION.--Lat 40°40'40", long 74°52'45" referenced to North American Datum of 1983, Clinton Township, Hunterdon County, NJ, Hydrologic Unit 02030105, on left bank, 0.7 mi upstream of dam at Lake Solitude, 1.0 mi northeast of High Bridge, and 4.4 mi upstream from Spruce Run.
DRAINAGE AREA.--65.3 mi2.
PERIOD OF RECORD.--October 1918 to current year. Monthly discharge only for some periods, published in WSP 1302.
REVISED RECORDS.--WSP 601: 1924. WSP 781: Drainage area. WSP 1552: 1919(M), 1920(M), 1921, 1923, 1924(M), 1927-28(M), 1934(M), 1941(M).
GAGE.--Water-stage recorder with telemetry and crest-stage gage. Concrete control since Sep 28, 1930. Datum of gage is 282.10 ft above NGVD of 1929 (levels from New Jersey Geological Survey benchmark). Prior to Sep 30, 1921, reference point at same site and datum.
REMARKS.--Records fair, except for estimated discharges, which are poor. Occasional regulation at low flow from unknown source.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 6,910 ft3/s, Jan 25, 1979, gage height, 12.07 ft; maximum gage height, 14.26 ft, Jan 28, 1994, as a result of an ice jam; minimum discharge, 6.6 ft3/s, Oct 11, 1930.
EXTREMES OUTSIDE PERIOD OF RECORD.--Floods of Feb 6, 1896, Mar 2, 1902, and Oct 9, 1903 reached discharges at High Bridge of 7,560 ft3/s, 3,840 ft3/s, and 2,670 ft3/s, respectively (according to reports of the New Jersey State Geologist).

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 2007-10-01  2016-10-23
00065 Gage height 2007-10-01  2016-10-23

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Discharge, cubic feet per second

Most recent instantaneous value: 21   10-23-2016   20:45 EDT
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Daily discharge, cubic feet per second -- statistics for Oct 23 based on 97 years of record more
Most Recent
Value Oct 23
Median Mean 75th
20 21 36 48 82 83 646

Gage height, feet

Most recent instantaneous value: 5.70   10-23-2016   20:45 EDT
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