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°31'34", long 75°03'54"
referenced to North American Datum of 1983, Frenchtown Borough,
Hunterdon County, NJ, Hydrologic Unit 02040105, on upstream side of
Uhlerstown-Frenchtown bridge, about 200 ft west of left back in
Frenchtown, 900 ft upstream of mouth of Nishisakawick Creek, 0.5 mi
southeast of Jugtown, PA, and 3.0 miles west of Baptistown.
PERIOD OF RECORD.--
Annual maximum, water years 1936-1956,
2005-2006, 2008 to current water year.
WDR US-2009: 2008(M).
Water-stage recorder with telemetry. Datum of gage is
99.88 ft above NGVD of 1929.
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, 27.79 ft,
Aug 20, 1955.
EXTREMES OUTSIDE PERIOD OF RECORD.--
The flood of Oct 10, 1903
reached a gage height of 24.4 ft.
PERIOD OF RECORD.--
Water years 1976 to 1982.
Dissolved Oxygen: September 2014 to current year.
Dissolved Oxygen, Percent of Saturation: September 2014 to current
pH: September 2014 to current year.
Specific Conductance: September 2014 to current year.
Water Temperature: September 2014 to current year.
Turbidity: September 2014 to current year.
The accuracy of continuous water-quality data can be
obtained by using this link.
EXTREMES FOR PERIOD OF DAILY RECORD.--
DISSOLVED OXYGEN, PERCENT OF SATURATION: Maximum, 173%, July 25, 2015;
minimum, 64%, May 5, 2015.
pH: Maximum, 9.4 standard units, Jul 24, 25, 26, 2015; minimum, 7.1
standard units, Jul 3, 4, 5, 2015.
SPECIFIC CONDUCTANCE: Maximum, 464 microsiemens/cm, Feb 02, 2015;
minimum, 121 microsiemens/cm, Jul 2, 2015.
WATER TEMPERATURE: Maximum, 29.4°C, Jul 18, 2015; minimum, 0.5°C, Jan
28 and 31, 2015.
TURBIDITY: Maximum, 190 FNU, Jan 18, 2015; minimum, 0.0 FNU on many
National Weather Service flood stage for this
gage is 16.0 ft.
Forecasts for this gage are issued by the National Weather Service
Forecast information is available here.