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SURFACE-WATER RECORDS
LOCATION.--Lat 40°41'15", long 74°18'42"
referenced to North American Datum of 1983, Springfield Township, Union
County, NJ, Hydrologic Unit 02030104, on left bank 50 ft downstream
from bridge on eastbound U.S. Highway 22, 100 ft downstream from Pope
Brook, and 1.5 mi south of Springfield.
DRAINAGE AREA.--25.5 mi
2.
PERIOD OF RECORD.--Continuous-record discharge station July 1938
to current year.
REVISED RECORDS.--WSP 1622: 1945. WDR NJ-1973: 1938(M), 1968(M),
1971(M).
GAGE.--Water-stage recorder with telemetry and crest-stage gage.
Datum of gage is 66.17 ft above NGVD of 1929.
REMARKS.--Records fair, except for estimated discharges, which
are poor. Discharges above 5,600 ft
3/s from rating curve
extension on basis of slope-area measurement of peak flow. Water for
municipal supply diverted by City of Orange at Orange Reservoir
upstream on the West Branch Rahway River. The flow past this station is
affected by diversions by pumpage from wells by Orange, South Orange,
New Jersey-American Water Company, and Springfield station of
Elizabethtown Water Company (deactivated in late 1980s). Since 1980,
the site may be affected during high flows by backwater from the Lenape
Park flood control dam, about 1 mile downstream.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 8,620
ft
3/s, gage height, 10.88 ft Aug 28, 2011, from high-water
mark in gage house, from rating curve extended above 5,600
ft
3/s on basis of slope-area measurement of peak flow;
minimum discharge, 0.10 ft
3/s, Sep 11, 1966.
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water years 1978 to current year.
REMARKS.--Discrete water-quality data were collected as part of
the
New Jersey Ambient Surface-Water-Quality Monitoring Network.
Peak
Flood Chart
National Weather Service flood stage for
this gage is 5.5 feet.
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