LOCATION.--Lat 41°28'31", long
74°54'46" referenced to North American Datum of 1927,
Pike County, PA, Hydrologic Unit 02040104, at
Shohola-Barryville Bridge at Barryville, just upstream from
Halfway Brook, and 1,000 ft upstream from Shohola Creek.
DRAINAGE AREA.--2,659 mi².
PERIOD OF RECORD.--October 2018 to current year.
GAGE.--Water-stage recorder. Datum of gage is 559.78 ft
above NGVD of 1929 and 559.31 ft above NAVD of 1988.
REMARKS.--
Flow regulated by Prompton Reservoir (station 01428900),
General Edgar Jadwin Reservoir (station 01429400), and Lake
Wallenpaupack (station 01431700). Large diurnal fluctuations at
medium and low flows caused by powerplants on tributary
streams. Subsequent to September 1954, entire flow from 371 mi²
of drainage area controlled by Pepacton Reservoir (station
01416900), and subsequent to October 1963, entire flow from 454
mi² of drainage area controlled by Cannonsville Reservoir
(station 01424997). Part of flow from these reservoirs diverted
for New York City municipal supply. Remainder of flow (except
for conservation releases and spill) impounded for release
during periods of low flow in the lower Delaware River basin,
as directed by the Delaware River Master.
Water Year 2019: Records fair except those for estimated
daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge,
40,4000 ft³/s, Apr. 15, 2019, gage height, 12.96 ft; minimum
discharge, 867 ft³/s, gage height, 3.49 ft, Sept. 9,
2019.
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE:
October 1967 to September 1973, March 1975 to current year.
SPECIFIC CONDUCTANCE: August 2019 to current year.
INSTRUMENTATION1.--Water-temperature and
specific conductance satellite telemeter provides
15-minute-interval readings. From March 1975 to February 1994,
water-temperature recorder provided one-hour-interval readings.
Prior to September 1973, water-temperature recorder provided
continuous recordings.
REMARKS1.--Temperature readings prior to Oct.
1, 2007, rounded to the nearest 0.5 °C. Unpublished records of
daily temperatures for May to September 1964-66 are available
in files of the Geological Survey.
EXTREMES FOR PERIOD OF DAILY RECORD1.--WATER
TEMPERATURE: Prior to Oct. 1, 2007--Maximum (water years
1968-73, 1976-78, 1980-82, 1986-88, 1990-2002, 2004-07), 32.0
°C, July 20, 21, 1980; minimum, 0.0 °C on many days during
winter periods. WATER TEMPERATURE: After Oct. 1, 2007--Maximum,
29.8 °C, July 7, 2010; minimum, -0.1 °C on several days during
2008, 2010, and 2014 winter periods, Feb. 22, 23, 24, 26, 2011,
Jan. 22, 23, 2012. SPECIFIC CONDUCTANCE: Maximum, 112
uS/cm at 25 °C, Sept. 12, 2019; minimum, 94 uS/cm at
25 °C, Aug. 21, 2019.
1 Water-Quality Records
![[!]](https://pa.water.usgs.gov/images/exclaim.gif)
ICE EFFECTS
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.
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