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ALL DATA ARE AT LOCAL TIME


USGS 01407500 Swimming River near Red Bank 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.

 


SURFACE-WATER RECORDS

LOCATION.--Lat 40°19'11", long 74°06'56" referenced to North American Datum of 1983, Colts Neck Township, Monmouth County, NJ, Hydrologic Unit 02030104, on left bank 50 ft upstream from spillway at Swimming River Reservoir, 1,000 ft upstream of bridge on Swimming River Road (County Route 50), 3.3 mi southwest of Red Bank, and 4.8 mi upstream from mouth.
DRAINAGE AREA.--49.2 mi2.
PERIOD OF RECORD.--August 1922 to current year.
REVISED RECORDS.--WSP 891: 1939. WDR NJ-83-1: Drainage area. WDR NJ-90-1: 1989
GAGE.--Water-stage recorder with telemetry above concrete dam. Datum of gage is 30.00 ft above NGVD of 1929. Prior to Jan 19, 1962, at site 800 ft upstream at datum 17.67 ft lower. Jan 19 to Mar 30, 1962, non-recording gage, 700 ft upstream at datum 13.87 ft lower.
REMARKS.--Records fair, except for estimated discharges and discharges less than 5 ft3/s, which are poor. Records given herein represent flow over spillway and flow or leakage through blowoff gates. Flow regulated by diversions from Swimming River Reservoir for municipal supply. Reservoir used for storage and water diversion by New Jersey-American Water Company. Reservoir enlarged and dam raised in 1962. Discharges above 1,100 ft3/s from rating curve extension on basis of weir formula.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 8,910 ft3/s, from rating curve extended above 1,100 ft3/s on basis of weir formula, Oct 27, 1943, gage height, 8.96 ft, site and datum then in use; minimum discharge, 0.00 ft3/s, many days.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of July 1919 reached a stage of 7.84 ft (site and datum then in use; from floodmark), discharge, approximately 11,800 ft3/s.

WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water years 1923-24, 1952, 1960-72, 1974-81, 2007.

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  2016-12-03
00065 Gage height 2007-10-01  2016-12-03

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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: 2.7   12-03-2016   04:15 EST
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Daily discharge, cubic feet per second -- statistics for Dec 3 based on 94 years of record more
Min
(1981)
Most Recent
Instantaneous
Value Dec 3
25th
percen-
tile
Median Mean 75th
percen-
tile
Max
(1987)
0.00 2.7 21 36 61 62 825


Gage height, feet

Most recent instantaneous value: 4.61   12-03-2016   04:15 EST
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