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°19'59", long 74°40'55"
referenced to North American Datum of 1983, Princeton Township, Mercer
County, NJ, Hydrologic Unit 02030105, on right bank, 10 ft downstream
from bridge on U.S. Highway 206, 1.6 mi southwest of Princeton, and 4.0
mi upstream from Carnegie Lake.
PERIOD OF RECORD.--
October 1953 to current year.
Water-stage recorder with telemetry, crest-stage gage,
and concrete control. Datum of gage is 62.23 ft above NGVD of 1929
(levels from New Jersey Geological Survey benchmark).
Records fair, except for estimated discharges, which
are poor. Since July 1959 some regulation by several small reservoirs,
combined capacity, 49,800,000 gal. Discharges above 5,100
/s from rating extension on basis of contracted-opening
measurement of peak flow.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 10,600
/s, Aug 28, 2011, gage height, 16.23 ft, from rating
curve extended above 5,100 ft3
/s on basis of
contracted-opening measurement of peak flow at gage height 14.26 ft;
minimum discharge, 0.0 ft3
/s, Aug 5, 1966.
Gage height temporarily unavailable during
Rt 206 bridge construction. Discharge is being maintained during this
period using a temporary downstream gage.
National Weather Service flood stage for
this gage is 9 ft.