STATION.--01551500 WEST BRANCH SUSQUEHANNA RIVER AT
WILLIAMSPORT, PA
LOCATION.--Lat 41`14'10", long
76`59'49", Lycoming County, Hydrologic Unit 02050206, on right
bank 100 ft upstream from Market Street bridge at South Williamsport,
and 350 ft upstream from Hagermans Run.
DRAINAGE AREA.--5,682 square miles.
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 Sept. 30, 1928, non-recording gage at bridge 100
ft downstream at same datum. Prior to July 1980, 100 ft downstream on
left bank at same datum. Satellite and landline telemetry at
station.
COOPERATION.--Funding for the operation of this
station is provided by the Pennsylvania Department of Environmental
Protection, the City of Williamsport, and the U.S. Geological
Survey.
GAGE HEIGHTS OF IMPORTANCE.-
Supplied by USGS: Maximum recordable gage height
(stage sensor operational limit) - 41.0 ft; Data transmitter
operational limit - 42.4 ft;
Supplied by NWS: Action stage-10 ft; Flood stage-20
ft, high water affects a few homes and some roadways in areas not
protected by levee system; camping area west of Williamsport
significantly affected; Moderate flood stage-21 ft, a number of
residences and roads in the area outside the levee system are affected;
Major flood stage-30 ft, many homes and businesses outside the levee
system are affected by high water.
