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Water-Year Summary for Site 01518498

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00062 Elevation, reservoir(Max.,Min.,Mean)  

Water year 2019: 2019-10-01 to 2020-09-30

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USGS Water-Year Summary 2019
LOCATION - Lat 41°53'56", long 77°08'52" referenced to North American Datum of 1927, Tioga County, PA, Hydrologic Unit 02050104, at Hammond Dam on Crooked Creek, 3.0 mi upstream from mouth, and 0.8 mi southwest of Tioga.
DRAINAGE AREA - 122 mi².
PERIOD OF RECORD - November 1979 to September 2013 (elevation and contents), October 2013 to current year (elevation).
GAGE - Water-stage recorder. Datum of gage is U.S. Army Corps of Engineers local project datum. Prior to water year 2007, the datum was incorrectly reported as NGVD 1929. Satellite and landline telemetry at station.
COOPERATION - Content tables provided by U.S. Army Corps of Engineers. Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Baltimore District.
REMARKS - Reservoir is formed by rolled earth and rockfill dam with concrete chute spillway with uncontrolled weir at elevation 1,131.0 ft. Storage began in November 1979. Capacity at elevation 1,131.0 ft is 63,500 acre-ft. Recreation lake elevation is 1,086.0 ft, capacity 8,625 acre-ft. Reservoir is used for flood control, recreation, and water quality. Figures given herein represent total contents. Hammond Lake is connected to Tioga Lake by a connecting channel that contains two gates and an overflow weir at elevation 1,101.00 ft. It is possible for flow to go in either direction depending on the head difference in the two lakes. Flow is regulated by the two gates through the connecting channel and a low-flow outlet to Crooked Creek.

Extreme elevations: Maximum elevation, 1,123.55 ft, Apr 3, 1993; minimum, 1,074.00 ft, Oct 24, 1980.

Extreme contents prior to water year 2014: Maximum contents, 50,650 acre-ft, Apr 3, 1993, elevation, 1,123.55 ft; minimum, 2,430 acre-ft, Oct 24, 1980, elevation, 1,074.00 ft.