--01480500 WEST BRANCH BRANDYWINE CREEK AT
--Lat 39`59'08", long
75`49'40", Chester County, Hydrologic Unit 02040205, on right
bank at city limits of Coatesville, 1,200 ft upstream from bridge on
old Lincoln Highway, and 0.6 mi downstream from Rock Run.
PERIOD OF RECORD.
--October 1943 to December 1951,
January 1970 to current year.
--Water-stage recorder, water-quality monitor,
and V-notch sharp-crested weir. Elevation of gage is 305 ft above
National Geodetic Vertical Datum of 1929, from topographic map. Sept.
10, 1943, to Dec. 31, 1951, non-recording gage at site 1,100 ft
downstream at different datum.
GAGE HEIGHTS OF IMPORTANCE
Supplied by USGS
: Maximum recordable gage height
(stage sensor operational limit) - 14.2 ft; Data transmitter
operational limit - 16.3 ft;
Supplied by NWS
: Action stage-6 ft; Flood stage-7 ft;
Moderate flood stage-9 ft; Major flood stage-11 ft.
EXTREMES OUTSIDE PERIOD OF RECORD.
--Flood of Aug. 9,
1942, reached a stage of 12.3 ft, site and datum then in use,
discharge, 8,600 ft3/s, by slope-area measurement.
--Records of diversion provided by city of
Coatesville. Funding for the operation of this station is provided by
Chester County Water Resources Aythority and the U.S. Geological Survey
through the Cooperative Water Program.