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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.



[!] 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.




USGS 03042500 Two Lick Creek at Graceton, PA

PROVISIONAL DATA SUBJECT TO REVISION

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Station gage imageSTATION.--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.
This station managed by the PAWSC Pittsburgh Field Office.

Available Parameters Period of Record
  
1951-10-01  2024-03-27







 (365)
 

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Instantaneous-data availability statement


Discharge, cubic feet per second


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