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Water-Year Summary for Site 01480700

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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.
Available Parameters
00060 Discharge(Mean)  
63680 Turbidity, Form Neph(Max.,Min.,Mean)  

Water year 2021: 2021-10-01 to 2022-09-30
 

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USGS Water-Year Summary 2021
01480700 EAST BRANCH BRANDYWINE CREEK NEAR DOWNINGTOWN, PA
LOCATION - Lat 40°02'05", long 75°42'32" referenced to North American Datum of 1927, Chester County, PA, Hydrologic Unit 02040205, on right bank 20 ft downstream from bridge on Dowlin Forge Road, 200 ft east of State Highway 282, 0.4 mi downstream from Shamona Creek, 1.5 mi downstream from Marsh Creek, 2.0 mi upstream from Beaver Creek, and 2.2 mi north of Downingtown.
DRAINAGE AREA - 60.6 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Occasional low-flow measurements, water years 1948-57. October 1965 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 270 ft above National Geodetic Vertical Datum of 1929, from topographic map. Prior to July 30, 1966, non-recording gage at same site and datum. Satellite and landline telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey. Funding for the operation of  this station is provided by the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey.
REMARKS - Flow regulated since November 1973 by Marsh Creek Reservoir (station 01480684) 1.9 mi upstream. Records for water year 2014 rated good, except those for estimated daily discharges which are poor. Records for water year 2015 rated good, except those for estimated daily discharges which are poor. Records for water year 2016 rated good, except those for estimated daily discharges which are poor. Records for water year 2017 rated fair except those for estimated those discharges, which are poor. Records for water year 2018 rated fair except those estimated discharges, which are poor. Records for water year 2019 rated fair except those estimated discharges, which are poor.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - November 2010 to current year.
REMARKS - As of October 2013, results from discrete water quality samples collected at this site are available through the U.S. Geological Survey National Water Information System web interface on the "Water Quality for the Nation" webpage. The reporting precision of the turbidity probe in low turbidity water is +/- 0.3 FNU, therefore the lowest reportable value, 0 FNU, does not necessarily indicate a condition of zero turbidity. Interruptions in the record were due to malfunctions of the equipment. Water year 2014 turbidity records rated poor. Water year 2015 turbidity records rated poor. Water year 2016 turbidity records rated fair. Water year 2017 turbidity records rated fair. Water year 2018 turbidity records rated fair except for February 9 - April 2, which are poor. Water year 2019 turbidity records are fair.
EXTREMES FOR PERIOD OF DAILY RECORD - TURBIDITY: Maximum, 1,550 FNU, Dec. 1, 2010; minimum, 0.1 FNU, Sept 28, 2017. Maximum value exceeds manufacturers accuracy specifications of 1,000 NTU +/- 5%.