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ICE EFFECTS ON STREAMFLOW -- During cold weather, ice effects on stage and discharge determinations at some streamgages are likely. Streamgages experiencing ice conditions will have the discharge record temporarily disabled to prevent the display of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Adjustment of data for ice effects can only be done after detailed analysis.
National Weather Service flood stage for this gage is 13.0 ft.
Forecasts for this gage are issued by the National
Weather Service routinely year-round.
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.
LOCATION.--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 at Lambertville, 600 ft upstream of the Swan Creek, and 1.1 mile downstream of the bridge on U.S. Route 202.
DRAINAGE AREA.--6,680 mi2.
PERIOD OF RECORD.--Continuous-record gaging station, water years 1897-1906. Annual maximum stage, water years 1936-61, 2004 to current year.
GAGE.--Radar stage sensor. Datum of gage is 49 ft above NGVD 1929, by levels. NWS calls this gage "at New Hope, PA."
EXTREMES FOR PERIOD OF RECORD.--Maximum gage height, 24.16 ft, Aug 20, 1955.
COOPERATION.--This gage is funded by the New Jersey Dept. of Environmental Protection and the Delaware River Joint Toll Bridge Commission.