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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01480500 WEST BRANCH BRANDYWINE CREEK AT COATESVILLE, PA
LOCATION - Lat 39°59'08", long 75°49'40" referenced to North American Datum of 1927, Chester County, PA, 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.
DRAINAGE AREA - 45.8 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1943 to December 1951, January 1970 to current year.
GAGE - Water-stage recorder, crest-stage gage, and V-notch sharp-crested weir. Datum of gage is 306.05 ft above National Geodetic Vertical Datum of 1929. Sep 10, 1943, to Dec 31, 1951, non-recording gage at site 1,100 ft downstream at different datum. Satellite and landline telemetry at station.
COOPERATION - Funding for the operation of this station is provided by the Chester County Water Resources Authority and the U.S. Geological Survey.
REMARKS - Station affected by diversion from Rock Run Reservoir (station 01480465) 2.6 mi upstream, capacity, 982 acre-ft, for municipal supply of city of Coatesville.
Records for water years 2014 to 2016 are fair except those for estimated daily discharges, which are poor. Records for water years 2017-2020 are fair except those estimated discharges, which are poor. Records for water years 2021-2022 are fair.
Records for water years 2014 to 2016 are fair except those for estimated daily discharges, which are poor. Records for water years 2017-2020 are fair except those estimated discharges, which are poor. Records for water years 2021-2022 are fair.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Aug 9, 1942, reached a stage of 12.3 ft, site and datum currently in use, discharge, 8,600 ft³/s, by slope-area measurement.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1965, 1970-72, 1995 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: January 1995 to current year.
INSTRUMENTATION - Temperature probe interfaced with a data collection platform.
REMARKS - Temperature records for water year 2014 water temperature are fair. Temperature records for water year 2015 water temperature are fair. Temperature records for water year 2016 water temperature are fair. Temperature records for water year 2017 water temperature are poor. Temperature records for water year 2018 water temperature are fair. Beginning in water year 2019, water quality records are not rated as "excellent", "good", "fair", or "poor".
EXTREMES FOR PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Maximum, 29.0°C, July 6, 1999; minimum, 0.0°C, many days during winter periods.
