USGS Water-Year Summary 2021
01543500 SINNEMAHONING CREEK AT SINNEMAHONING, PA
LOCATION - Lat 41°19'02", long 78°06'12" referenced to North American Datum of 1927, Cameron County, PA, Hydrologic Unit 02050202, on left bank 0.2 mi upstream from Grove Run, and 0.7 mi upstream from Penn Central Railroad bridge at Sinnemahoning.
DRAINAGE AREA - 685 mi².
PERIOD OF RECORD - July 1938 to current year. Prior to October 1938 monthly discharge only, published in WSP 1302.
GAGE - Water-stage recorder. Datum of gage is 769.36 ft above National Geodetic Vertical Datum of 1929. Satellite and landline telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the Pennsylvania Department of Environmental Protection.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known, 21.94 ft, Mar 18, 1936, from floodmark, discharge, 61,200 ft³/s, from rating curve extended above 31,000 ft³/s on basis of slope-area measurement at gage height 21.58 ft.