USGS Water-Year Summary 2021
01543900 FIRST FORK SINNEMAHONING CREEK RESERVOIR NEAR SINNEMAHONING, PA
LOCATION - Lat 41°24'25", long 78°01'10" referenced to North American Datum of 1927, Cameron County, PA, Hydrologic Unit 02050202, at control tower of George B. Stevenson Dam on First Fork Sinnemahoning Creek, 8.0 mi northeast of Sinnemahoning, and 8.0 mi upstream from mouth.
DRAINAGE AREA - 243 mi².
PERIOD OF RECORD - January 1956 to September 2013 (elevation and contents), October 2013 to current year (elevation).
GAGE - Water-stage recorder and heated tipping bucket rain gage. Datum of gage is U.S. Army Corps of Engineers local project datum. Satellite and landline telemetry at station.
COOPERATION - Content tables provided by Pennsylvania Department of Conservation and Natural Resources. Station established and maintained by the U.S. Geological Survey. Funding for this station is provided by the U.S. Army Corps of Engineers, Baltimore District, the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey through the Cooperative Water Program.
EXTREMES FOR PERIOD OF RECORD
Extreme elevations: Maximum elevation, 1,015.87 ft, Jun 26, 1972; minimum, (after first filling), 891.84 ft, many days Oct 1973.
Extreme contents prior to water year 2014: Maximum contents, 62,030 acre-ft, Jun 26, 1972, elevation, 1,015.87 ft; minimum, (after first filling), 37 acre-ft many days in Oct 1973, elevation, 891.84 ft.