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°37'08", long 74°17'00"
referenced to North American Datum of 1983, Rahway City, Union County,
NJ, Hydrologic Unit 02030104, on left bank, 100 ft upstream from bridge
on St. Georges Avenue in Rahway, and 0.9 mi upstream from Robinsons
Branch, and 1.7 mi southwest of Linden.
PERIOD OF RECORD.--
July 1908 to April 1915 (gage heights and
discharge measurements only), October 1921 to current year.
WSP 781: Drainage area. WSP 1552: 1922-23(M),
1924, 1930-31(M), 1937. WDR NJ-79-1: 1978.
Water-stage recorder with telemetry and concrete control.
Datum of gage is 8.77 ft above NGVD of 1929. Prior to Aug 25, 1934,
non-recording gage at site 40 ft downstream from Church Street and
1,500 ft downstream from present site at datum 2.77 ft lower.
Records good, except for estimated discharges, which
are fair. Water for municipal supply diverted from river by cities of
Rahway and Orange. The flow past this station is affected by diversions
by pumpage from wells by the communities of Orange and South Orange,
Springfield station of Elizabethtown Water Company (now New Jersey
American Water Company, wells deactivated in late 1980s), by storage in
the Lenape Park Detention Basin (since 1980), and by gate operations at
Hansels Dam 5.6 mi upstream from gage in Cranford and Taylor Park Dam
on the West Branch Rahway River in Millburn 11.6 mi upstream from
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 7,250
/s, Aug 28, 2011, gage height, 12.10 ft, from high-water
mark inside gage house; minimum discharge, 0.0 ft3
days, an undetermined amount of negative flow may have occurred during
tidal surge on Oct 29-30, 2012.
PERIOD OF RECORD.--
Water years 1923-24, 1952, 1962, 1967-70,
1979 to current year.
Discrete water-quality data were collected as part of
New Jersey Ambient Surface-Water-Quality Monitoring Network
National Weather Service flood stage for
this gage is 6.0 feet.