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°36'21", long 74°17'59"
referenced to North American Datum of 1983, Rahway City, Union County,
NJ, Hydrologic Unit 02030104, on right bank, 300 ft upstream of dam on
Milton Lake in Rahway, 0.6 mi downstream from Middlesex Reservoir Dam,
and 1.6 mi upstream from mouth.
PERIOD OF RECORD.--
Continuous-record gaging station, water years
1940-96. Continuous-record gage-height station with annual maximum
discharge, water years 1999 to current year.
Water-stage recorder with telemetry. Datum of gage is
19.99 ft above NGVD of 1929.
Middlesex Reservoir located 3,200 ft upstream was used
by Middlesex Water Company for municipal supply until 1970. Peaks above
/s from rating curve extension on basis of flow
over dam computation of peak flow at gage height 5.65 ft and from
rating curve extended above 2,400 ft3
/s based on logarithmic
extrapolation. Annual peak data can be obtained by selecting Peak
streamflow from the 'Available data for this site' drop-down
menu above or by using this
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 5,600
/s, Aug 28, 2011, gage height, 6.56 ft, from rating curve
extended above 1400 ft3
/s on basis of flow over dam
computation of peak flow at gage height 5.65 ft and from rating curve
extension based on logarithmic extrapolation.