USGS Water-Year Summary 2021
01553500 WEST BRANCH SUSQUEHANNA RIVER AT LEWISBURG, PA
LOCATION - Lat 40°58'03", long 76°52'36" referenced to North American Datum of 1927, Northumberland County, PA, Hydrologic Unit 02050206, at downstream side of left abutment of Market Street bridge on State Highway 45 at Lewisburg, 0.2 mi downstream from Buffalo Creek, and 7.4 mi upstream from mouth.
DRAINAGE AREA - 6,847 mi².
PERIOD OF RECORD - October 1939 to current year. September 1913 to August 1923 (gage heights only), are contained in reports of Water Supply Commission of Pennsylvania and Pennsylvania Department of Forests and Waters.
GAGE - Water-stage recorder. Datum of gage is 428.20 ft above National Geodetic Vertical Datum of 1929. Sep 21, 1913, to Aug 31, 1923, Dec 7, 1939, to Jul 2, 1940, and Oct 20, 1987, to Sep 30, 1988, non-recording gage at same site and datum. Since Oct 1, 1942, water-stage recorder for Susquehanna River at Sunbury (station 01553990) used as an auxiliary gage. Satellite and landline telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey. Funding for this station is provided by the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Mar 19, 1936, reached a stage of 32.1 ft, from floodmarks (backwater from Susquehanna River), discharge, 287,000 ft³/s from slope-area measurement at Watsontown, 8.0 mi upstream.