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ATTENTION!!! Please be aware that the sharp rises and drops in the graphs displayed for some of the Allegheny River gages are being caused by hydroelectric power producers passing relatively large amounts of streamflow.

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STATION.--03049501 ALLEGHENY RIVER (LOWER POOL) AT NATRONA, PA
LOCATION.--Lat 40`36'47", long 79`43'10", Allegheny County, Hydrologic Unit 05010009, on right bank 300 ft downstream from dam at Lock 4 at Natrona, 5.8 mi downstream from Kiskiminetas River, and at mile 24.3.
DRAINAGE AREA.--11,410 square miles, approximately.
PERIOD OF RECORD.--September 2010 to current year.
GAGE.--Water-stage recorder. Station maintained for stage readings only. Datum of gage is 725.3 ft above North American Vertical Datum of 1988. Prior to February 15, 2024, the datum of gage was reported as 725.8 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 and the U.S. Geological Survey.