--03075070 MONONGAHELA RIVER AT ELIZABETH,
--Lat 40`15'44", long
79`54'05", Allegheny County, Hydrologic Unit 05020005, on
right bank 30 ft landward from upstream end of guide wall, 1,050 ft
upstream from dam at lock 3 at Elizabeth, 0.4 mi downstream from Lobbs
Creek, and at mile 24.0.
--5,340 square miles.
PERIOD OF RECORD.
--October 1933 to current year.
--Water-stage recorder and concrete dam control.
Datum of gage is 717.90 ft above National Geodetic Vertical Datum of
1929 (U.S. Army Corps of Engineers bench mark). From Oct. 1, 1967 to
Sept. 30, 1976, at site 17.5 mi upstream at datum 15.70 ft higher.
Prior to Oct. 1, 1967, water-stage recorder at site 17.9 mi upstream at
datum 17.43 ft higher. Oct. 1, 1965 to Sept. 30, 1967, auxiliary staff
gage, Apr. 14, 1966 to Sept. 30, 1967, auxiliary water-stage recorder
and Oct. 1, 1967 to Nov. 4, 1990, water-stage recorder at present site
at datum 7.60 ft higher. Satellite telemetry at station.
--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.
--Flow regulated by locks above station, since
1938 by Tygart Lake, and since 1926 by Lake Lynn, combined capacity,
GAGE HEIGHTS OF IMPORTANCE
Supplied by NWS
: Action stage-16.5 ft; Flood stage-20
ft; Moderate flood stage-23 ft; Major flood stage-26 ft.