STATION.--03042500 TWO LICK CREEK AT GRACETON, PA
LOCATION.--Lat 40`31'02", long 79`10'19", Indiana County, Hydrologic Unit 05010007, on right bank 0.8 mi upstream from highway bridge on road leading west from Graceton, 1.1 mi downstream from Tearing Run, 1.5 mi upstream from Cherry Run, and 8 mi northeast of Blairsville.
DRAINAGE AREA.--171 square miles.
PERIOD OF RECORD.--September 1951 to current year.
GAGE.--Water-stage recorder. Datum of gage is is 980.8 ft above North American Vertical Datum of 1988 from rapid-static GNSS survey. Prior to December 21, 2023, the datum of gage was erroneously reported as 981.63 ft above National Geodetic Vertical Datum of 1929. Satellite telemetry at station.
COOPERATION.--Station established and maintained by the U.S. Geological Survey. Funding for the operation of this station is provided by the U.S. Army Corps of Engineers, Pittsburgh District, the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey.
REMARKS.--Diurnal fluctuation caused by mine pumpage and by sewage-disposal plant above station. Flow regulated since December 1968 by Two Lick Creek Reservoir 10 mi upstream, capacity, 16,240 acre-ft and since July 1971 by Yellow Creek Lake (station 03042260) 11 mi upstream.
GAGE HEIGHTS OF IMPORTANCE.-
Supplied by NWS: Action stage-7.1 ft; Flood stage-9 ft; Moderate flood stage-19 ft; Major flood stage-22 ft.