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.
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.
PERIOD OF DAILY RECORD - November 2010 to current year.
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%.