Station established and maintained by the U.S. Geological
Survey.Station established and maintained by the U.S. Geological
--03041500 CONEMAUGH RIVER AT SEWARD,
--Lat 40`25'09", long
79`01'35", Westmoreland County, Hydrologic Unit 05010007, on
left bank at upstream side of bridge on State Highway 56 at Seward, 2.0
mi downstream from Findley Run, and 9 mi northwest of Johnstown.
PERIOD OF RECORD.
--May 1938 to current year.
--Water-stage recorder. Datum of gage is 1,076.01
ft above National Geodetic Vertical Datum of 1929.
--Flow regulated by steel mills and reservoirs
above station; the eight most effective reservoirs have a combined
capacity of 51,850 acre-ft. U.S. Army Corps of Engineers satellite
telemeter at station.
EXTREMES OUTSIDE PERIOD OF RECORD.
--Flood of Mar. 18,
1936 reached a stage of 26.4 ft, from floodmarks, discharge, 75,000
ft3/s, by contracted-opening measurement at site 6.7 mi downstream,
adjusted for inflow.
GAGE HEIGHTS OF IMPORTANCE.-
Supplied by NWS:
Action stage-8.8 ft; Flood stage-12
ft; Moderate flood stage-14 ft; Major flood stage-16 ft.
--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 through the Cooperative Water Program.