SURFACE-WATER RECORDS
LOCATION.--Lat 41°00'48", long 75°05'10" referenced to North American Datum of 1983, Hardwick Township, Warren County, NJ, Hydrologic Unit 02040104, on left bank 700 ft streamward from River Road, 1.0 mi downstream from Tocks Island, 3.7 mi northeast of Delaware Water Gap, PA, and 4.0 mi upstream from bridge on Interstate Route 80.
DRAINAGE AREA.--3,850 mi².
PERIOD OF RECORD.--Continuous-record discharge station, water years 1964-95. Annual maximum gage, water years 1955, 1996, 2002-08. Continuous-record gage-height station with annual maximum discharge, water years 2009 to current year.
REVISED RECORDS.--WDR NJ-2004-1: 1996(M).
GAGE.--Water-stage and air temperature recorder with telemetry and crest-stage gages. Datum of gage is 293.64 ft above NGVD of 1929.
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 discharge, 260,000 ft³/s, Aug 19, 1955, gage height, 37.4 ft, from high-water mark; minimum discharge, not determined.

Peak Flood Chart

National Weather Service flood stage for this gage is 21.0 ft.

Forecasts for this gage are issued by the National Weather Service routinely year-round.
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.