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
analysis.
Funding for this site is provided by:
SURFACE-WATER RECORDS
LOCATION.--Lat 41°18'33", long 74°47'43"
referenced to North American Datum of 1983, Dingman Township, Pike
County, PA, Hydrologic Unit 02040104, on right bank 1,500 ft upstream
from toll bridge (on U.S. Route 206) between Montague, NJ and Milford,
PA, 0.8 mi downstream from Sawkill Creek, and at river mile
246.3.
DRAINAGE AREA.--3,480 mi².
PERIOD OF RECORD.--March 1936 to September 1939 (gage heights
only, published as "at Milford, PA"). October 1939 to current
year.
REVISIONS HISTORY.--WDR NJ-81-2: 1980.
GAGE.--Water-stage recorder with telemetry. Datum of gage is
369.20 ft above NAVD of 1988. Prior to Feb 9, 1940, non-recording gage
on upstream side of left span of subsequently dismantled bridge at
present site at datum 70 ft lower.
REMARKS.--Records good, except for estimated discharges, which
are fair. Diurnal fluctuation at medium and low flow caused by
hydroelectric plants on tributary streams. Flow regulated by Lake
Wallenpaupack, Cliff Lake, and by Pepacton, Cannonsville, Swinging
Bridge, Toronto, and Neversink Reservoirs. Discharges above 105,000
ft³/s from rating curve extension on basis of flood-routing
study.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 250,000
ft³/s, from rating curve extended above 105,000 ft³/s on basis of
flood-routing study, Aug 19, 1955, gage height, 35.15 ft; minimum
discharge, 382 ft³/s, Aug 24, 1954.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Oct 10, 1903
reached a stage of 31.1 ft (from high-water mark), discharge, 217,000
ft³/s.
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water years 1956-73, 1976-78, 1991 to August
2009.
Peak
Flood Chart
National Weather Service flood stage for
this gage is 25 ft.
Weather station data are available from this location at this
link.
The weather 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.
