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ALL DATA ARE AT LOCAL TIME


* IMPORTANT: Next Generation Station Page

USGS 01396500 South Branch Raritan River near High Bridge NJ

PROVISIONAL DATA SUBJECT TO REVISION

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SURFACE-WATER RECORDS

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.--Continuous-record discharge station 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. Discharges above 2,400 ft3/s from rating curve extension on basis of contracted opening calculation. 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, from rating curve extended above 2,400 ft3/s on basis of contracted opening computation; 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

National Weather Service flood stage for this gage is 10 ft.

This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
  
1981-10-01  2020-04-05
2007-10-01  2020-04-05







 (7)
 
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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: 97.8 04-05-2020   08:45 EDT
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Daily discharge, cubic feet per second -- statistics for Apr 5 based on 99 water years of record more
Min
(2002)		 Most Recent
Instantaneous
Value Apr 5		 25th
percen-
tile		 Median 75th
percen-
tile		 Mean Max
(1984)
56.7 97.8 117 168 234 244 2980

Gage height, feet
Most recent instantaneous value: 6.25 04-05-2020   08:45 EDT
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