USGS Water-Year Summary 2021
01551500 WEST BRANCH SUSQUEHANNA RIVER AT WILLIAMSPORT, PA
LOCATION - Lat 41°14'10", long 76°59'49" referenced to North American Datum of 1927, Lycoming County, PA, Hydrologic Unit 02050206, on right bank 100 ft upstream from Market Street bridge at South Williamsport, and 350 ft upstream from Hagerman's Run.
DRAINAGE AREA - 5,682 mi².
- WSP 756: Drainage area. WSP 1302: 1925-28. WSP 1502: 1895-1904, 1912-13, 1919.
PERIOD OF RECORD - March 1895 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 494.98 ft above National Geodetic Vertical Datum of 1929. Mar 1, 1895, to Sep 30, 1928, nonrecording gage at bridge 100 ft downstream at same datum. Prior to Jul 1980, 100 ft downstream on left bank at same datum. Satellite and landline telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey. Funding for this station provided by the Pennsylvania Department of Environmental Protection, the City of Williamsport and the U.S. Geological Survey.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage known prior to 1895, 32.4 ft, Jun 1, 1889, discharge, about 252,000 ft³/s.
PERIOD OF RECORD - April 2002 to current year.
COOPERATION - Water-quality samples were collected as part of the Pennsylvania Department of Environmental Protection Water-Quality Network (WQN) with cooperation from the Pennsylvania Department of Environmental Protection.