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Water-Year Summary for Site 01553500

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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
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.
SURFACE-WATER RECORDS
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 427.45 ft above North American Vertical Datum of 1988 (from benchmark). Sept. 21, 1913 to Aug. 31, 1923, Dec. 7, 1939, to Jul. 2, 1940, and Oct. 20, 1987, to Sept. 30, 1988, non-recording gage at same site and datum. Prior to March 15, 2024, the datum of gage was reported as 428.20 ft above National Geodetic Vertical Datum of 1929.  Since Oct 1, 1942, water-stage recorder for Susquehanna River at Sunbury (station 01553990) used as an auxiliary gage. Satellite 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.
REMARKS -

Flow slightly regulated by 6 flood-control reservoirs, which have a combined capacity of 440,200 acre-ft. Some flow is diverted from the West Branch Susquehanna River by, and for use at, the power company above the Lewisburg gage. Daily discharges determined from slope-adjusted computation using auxiliary gage (01553990) when auxiliary gage exceeds 8.00 ft, gage datum. 

Records are good except those for estimated discharge, which are poor.

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.