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[!] ICE EFFECTS ON STREAMFLOW -- During cold weather, stage and discharge values may be affected by ice at some streamgages. Streamgages experiencing ice conditions will have the discharge record temporarily disabled to prevent the display of erroneous discharge values. Display of discharge record will resume when it is determined that ice conditions are no longer present. Adjustment of data affected by ice can only be done after detailed analysis.

* IMPORTANT: Next Generation Station Page

USGS 01518498 Hammond Lake at Hammond Dam at Tioga, PA


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Funding for this site is provided by:


LOCATION.--Lat 41`53'56", long 77`08'52`, Tioga County, 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 square miles.
PERIOD OF RECORD.--November 1979 to current year.
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.
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 63,000 acre-ft. Recreation lake elevation is 1,086.0 ft, capacity 8,850 acre-ft. Reservoir is used for flood control and recreation. Flow is regulated by two gates through a connecting channel that discharges into Tioga Lake, and a low-flow outlet to Crooked Creek. Satellite and landline telemetry at station.
COOPERATION.--Funding for the operation of this station is provided by the U.S. Army Corps of Engineers, Baltimore District.
This station managed by the PAWSC Williamsport Field Office.

Available Parameters Available Period
2007-10-01  2020-01-20


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Summary of all available data for this site
Instantaneous-data availability statement

Elevation of reservoir water surface above datum, feet

Most recent instantaneous value: 1087.65 01-20-2020   22:00 EST
Graph of  Elevation of reservoir water surface above datum, feet

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