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°13'27", long 74°44'57"
referenced to North American Datum of 1983, Trenton City, Mercer
County, NJ, Hydrologic Unit 02040105, on left bank 20 ft upstream from
bridge on Chambers Street (Lincoln Avenue) in Trenton, 0.8 mi
downstream of Pond Run, and 1.5 mi upstream from mouth.
PERIOD OF RECORD.--
August 1923 to current year.
WDR NJ-82-2: Drainage area.
Water-stage recorder with telemetry. Concrete control
since July 10, 1932. Datum of gage is 24.76 ft above NGVD of 1929
(levels from New Jersey Geological Survey benchmark).
Records fair, except for estimated discharges, which
are poor. Records include water diverted from outside the basin since
February 1954 for municipal supply that returns to Assunpink Creek
through Ewing-Lawrence Sewerage Authority Treatment Plant, 2.4 mi above
station. Some diversion for irrigation in headwaters area during summer
months. Flow regulated by several flood-control reservoirs upstream
from gage since the mid-1970s.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 5,820
/s, Aug 28, 2011, gage height, 15.12 ft; minimum
discharge, 1.0 ft3
/s, Aug 21, 1931.
National Weather Service flood stage for this
gage is 8.5 ft.
Forecasts for this gage are issued by the National Weather Service
Forecast information is available here.