ON STREAMFLOW -- During cold weather, stage and discharge values may be
affected by ice at some streamgages. Streamgages experiencing ice
conditions will have the discharge record temporarily disabled to
prevent the display of erroneous discharge values. Display of discharge
record will resume when it is determined that ice conditions are no
longer present. Adjustment of data affected by ice can only be done
after detailed analysis.
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 (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. DRAINAGE AREA.--6,680 mi². 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 year.
REVISIONS HISTORY.--WDR US-2012: 2004-2005(M) GAGE.--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 datum. REMARKS.--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 link. EXTREMES FOR PERIOD OF RECORD.--Maximum gage height, 24.16 ft, Aug 20, 1955.
NOTICE.--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.
This station managed by the New Jersey Water Science Center.