--01563500 JUNIATA RIVER AT MAPLETON DEPOT,
--Lat 40`23'32", long
77`56'07", Huntingdon County, Hydrologic Unit 02050304, on
right bank 0.2 mi downstream from Scrub Run, and 0.3 mi downstream from
bridge on State Highway 655 at Mapleton Depot.
PERIOD OF RECORD.
--October 1937 to current year.
--Water-stage recorder. Datum of gage is 557.31
ft above National Geodetic Vertical Datum of 1929.
GAGE HEIGHTS OF IMPORTANCE
Supplied by USGS
: Maximum recordable gage height
(stage sensor operational limit) - 37.5 ft; Data transmitter
operational limit - 38.5 ft;
Supplied by NWS
: Action stage-15 ft; Flood stage-20
ft, the left or north bank overflows into low lying areas; Moderate
flood stage-24 ft, the right or south bank overflows; high water
affects homes on right bank near the gage; the glass plant upstream of
gage on left bank is flooded; Major flood stage-26 ft, many homes on
the right or south bank are affected; the approaches of the highway
bridge connecting Mapleton Depot with Rte 22 are inundated.
EXTREMES OUTSIDE PERIOD OF RECORD.
--Flood of Mar. 18,
1936, reached a stage of 38.2 ft, from floodmark, discharge, 165,000
ft3/s from rating curve extended above 39,000 ft3/s on basis of runoff
comparison with upstream and downstream stations.
--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, Baltimore District,
the Pennsylvania Departm ent of Environmental Protection and the U.S.
Geological Survey through the National Streamflow Information
--Flow regulated since October 1972 by
Raystown Dam (station 01563200), 12 mi upstream.