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Water-Year Summary for Site 01480300

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00045 Precipitation(Sum)  
00060 Discharge(Mean)  
63680 Turbidity, Form Neph(Mean,Min.,Max.)  
80155 Suspnd sedmnt disch(Sum)  
80297 SS load, regres ss(Mean)  
99409 Susp sediment,wu,est(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
01480300 WEST BRANCH BRANDYWINE CREEK NEAR HONEY BROOK, PA
LOCATION - Lat 40°04'22", long 75°51'40" referenced to North American Datum of 1927, Chester County, PA, Hydrologic Unit 02040205, on right bank 100 ft upstream from bridge on SR 4007 at Birdell, 0.4 mi downstream from Two Log Run, and 3.0 mi southeast of Honey Brook.
DRAINAGE AREA - 18.7 mi².
REVISIONS HISTORY - WDR PA-73-1: 1972(P). WDR PA-99-1: 1972, 1973, 1975, 1976, 1978, 1979, 1982, 1984, 1985, 1987-89, 1996, 1997 (P). For March 08, 2014, the daily sum suspended-sediment discharge has been revised from 18.24 tons/day to 3.49 tons/day. For March 8, 2015, the daily sum suspended-sediment discharge is revised from 99.38 tons/day to 1.96 tons/day.
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 1960 to current year.
GAGE - Water-stage recorder and crest-stage gage. Prior to July 1990, water-stage recorder at site 130 ft downstream on right bank at same datum. Datum of gage is 591.20 ft above National Geodetic Vertical Datum of 1929. 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, Chester County Water Resources Authority, and the U.S. Geological Survey.
REMARKS -

Some regulation at low flow by pumpage from treatment plant. Records for water years 2014-2016 are good, except those for discharges less than 10 ft³/s and those for estimated daily discharges, which are poor. Records for water year 2017 are good, except those for discharges less to 10 ft³/s, which are fair. Records for water years 2018-2020 and 2022 are fair except those for estimated discharge, which is poor. Records for water year 2021 are fair except those from July 16 to Sept 15 and those for estimated discharge, which are poor.

CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - October 2005 to 2014.
INSTRUMENTATION - Precipitation gage interfaced with data collection platform.
REMARKS - Precipitation record for 2014 is poor. Estimated daily totals based on accurate volume. Time distribution for estimated values is confirmed by comparison with nearby stations.
ECOLOGICAL RECORDS
PERIOD OF RECORD - October 1998 to current year.
REMARKS - Results of benthic surveys can be obtained by contacting the U.S. Geological Survey Pennsylvania Water Science Center, Exton Field Office.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water year 1965 to current year.
PERIOD OF DAILY RECORD - TURBIDITY: November 2006 to current year. SUSPENDED-SEDIMENT DISCHARGE: October 2008 to current year.
COOPERATION - Water-quality samples and turbidity data were collected by the U.S. Geological Survey in cooperation with the Chester County Water Resources Agency.
REMARKS -

The reporting precision of the turbidity probe in low turbidity water is +/-0.3 FNU. The lowest reportable value, 0 FNU, does not necessarily indicate a condition of zero turbidity. The reporting precision of the turbidity probe in high turbidity water (>1,000 FNU) is +/- 5 percent of the reported value.  Interruptions in the record due to malfunction of the equipment. 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. Water-quality samples were collected as part of the Chester County Biological Monitoring project. Some samples were collected as part of the Delaware River National Water-Quality Assessment program (DELR NAWQA). Suspended- Sediment Discharge was computed using methods described in Sloto, R.A., and Olson, L.E., "Estimated suspended-sediment loads and yields in the French and Brandywine Creek Basins, Chester County, Pennsylvania, water years 2008-09: U.S. Geological Survey Scientific Investigations Report 2011-5109. The equation for computing suspended-sediment concentration was "(SSC)=1.8729 (Turbidity)-11.5034". Suspended Sediment Discharge mistakenly published with wording "Mean" rather than "Total" tons/day for water years 2008 to 2013. The numbers represented in the tables are correct. The turbidity records for water year 2014 are rated poor. The turbidity records for water year 2015 are rated poor. The turbidity records for water year 2016 are rated poor. The turbidity records for water year 2017 are rated poor. The turbidity records for water year 2018 are rated poor. Beginning in water year 2019, water quality records are not rated as "excellent", "good", "fair", or "poor".

Explanations of sample characteristics are available from the USGS NWISWeb Help System pages: http://waterdata.usgs.gov/nwis/help

EXTREMES FOR PERIOD OF DAILY RECORD - TURBIDITY: Maximum, 1,442 FNU, Oct 11, 2018; minimum, 0 FNU, on many days.