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°21'53", long 74°56'56"
referenced to North American Datum of 1983, Lambertville City,
Hunterdon County, NJ, Hydrologic Unit 02040105, on the downstream side
of the bridge on Bridge Street (State Route 179) at Lambertville, 600
ft upstream of the Swan Creek, and 1.1 mile downstream of the bridge on
U.S. Route 202.
PERIOD OF RECORD.--
Continuous-record discharge station, water
years 1897-1906. Annual maximum gage, water years 1936-61, 2004-08.
Continuous-record gage-height station, water years 2009 to current
WDR US-2012: 2004-2005(M)
Water-stage recorder with telemetry. Datum of gage is 49
ft above NGVD 1929, by levels. Datum of gage between 1898 to 1908,
46.36 ft above NGVD of 1929; datum of gage from 1936 to 2003, 0.11 ft
above NGVD of 1929. Online peaks have been adjusted to current
Gage operated in cooperation with the Delaware
River Joint Toll Bridge Commission.
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 gage height, 24.16 ft,
Aug 20, 1955.
National Weather Service flood stage for this
gage is 13.0 ft.
Forecasts for this gage are issued by the National Weather Service
Forecast information is available here.
The air temperature data for this station
are temporary and will only be displayed for 120 days. Although the
instrumentation is calibrated at least once/year, the temporary
classification means that documented routine inspections and other
quality assurance measures are not performed that would make the data
acceptable for archival, retrieval, or future use in general scientific
or interpretive studies.