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
Funding for this site is provided by:
Lat 40°24'54", long 74°20'56"
referenced to North American Datum of 1983, Old Bridge Township,
Middlesex County, NJ, Hydrologic Unit 02030105, on right end of dam for
Deep Run Reservoir, 800 ft upstream of Waterworks Road, 0.9 mi east of
Old Bridge, 1.2 mi upstream of mouth, and 3.2 mi south of
PERIOD OF RECORD.--
Miscellaneous measurements, water year 2000.
Continuous-record discharge station, water years 2001 to current
WDR NJ-03-1: Drainage area. WDR US-2013: 2007,
Water-stage and precipitation recorder with telemetry,
crest-stage gages and concrete dam. Datum of gage is 1.3 ft above NAVD
of 1988 (levels from New Jersey Geological Survey benchmark).
Records fair, except for estimated discharges and
discharges below 1 ft3
/s, which are poor. Records given
herein represent flow over spillway, flow through sluice gates and
leakage. Dam construction for Deep Run Reservoir was completed in 1988.
Water diverted for municipal supply by City of Perth Amboy from nearby
wells. Discharges above 1,200 ft3
/s from rating curve
extension on basis of flow over dam computation.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 5,410
/s, Aug 28, 2011, gage height, 9.60 ft, from rating curve
extended above 1,200 ft3
/s on basis of flow over dam
computation, maximum gage height, 10.73 ft, Oct 29, 2012, affected by
backwater from tide; minimum discharge, 0.05 ft3
estimated leakage when sluice gate is closed and reservoir was below
spillway crest, Aug 26, 2016, undetermined amount of negative flow
occurred during tidal surge on Oct 29, 2012.
Rain gage data is available from this location at this link