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New WQX 3.0 profiles are available at waterqualitydata.us/beta/. These profiles will contain recent USGS data added since March 11, 2024, which marks the beginning of limited accessibility for USGS data. Read more about the 3.0 profiles and associated changes here.

This legacy user interface will continue to function for several weeks. However, this user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  NWIS >  USGS-PA >  USGS-01480434

West Branch Brandywine Creek at Rock Run, PA (USGS-01480434) site data in the Water Quality Portal

Data Provider: NWIS (Learn more about Water Quality Portal Data Providers)

This stream site, maintained by the USGS Pennsylvania Water Science Center (identifier USGS-PA), has the name "West Branch Brandywine Creek at Rock Run, PA" and has the identifier USGS-01480434. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)02040205. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 37.30 sq mi and the contributing drainage area is 37.3 sq mi.

This site is located in Chester County County, Pennsylvania at 39.99343906000000 degrees latitude and -75.8277248000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from MAP." and the accuracy is 1 seconds. The source map scale is 1:24000.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-01480434" into the "Site ID" box under Site Parameters

What other monitoring locations are upstream or downstream from this one?

Upstream and downstream locations

This map shows all Water Quality Portal stations that are 10 miles upstream (dashed dark blue) and 10 miles downstream (solid light blue) of this monitoring location (indicated by the large blue circle). The upstream and downstream functionality is provided by the Network Linked Data Index.

When were data collected at this location?

Periods of record for data characteristic groups

For a more detailed breakdown of data, go to the Monitoring Report at the EPA How's My Waterway Application
Characteristic Group Date Range*
Biological, Counts 1970 - 1980
Inorganics, Major, Metals 1970 - 2004
Inorganics, Major, Non-metals 1970 - 2004
Inorganics, Minor, Metals 1970 - 2004
Inorganics, Minor, Non-metals 1973 - 2004
Microbiological 1970 - 1973
Nutrient 1970 - 2004
Organics, Other 1981 - 1986
Organics, PCBs 1986 - 1986
Organics, Pesticide 1986 - 1986
Physical 1970 - 2004
Population/Community 1970 - 1996
Sediment 1970 - 1972
*Date ranges may contain gap years

What other information is available for this location?

Detailed Metadata

For the definitions of the metadata elements, please go to the Water Quality Portal user guide

Location Metadata Value
OrganizationIdentifier USGS-PA
OrganizationFormalName USGS Pennsylvania Water Science Center
MonitoringLocationIdentifier USGS-01480434
MonitoringLocationName West Branch Brandywine Creek at Rock Run, PA
MonitoringLocationTypeName Stream
HUCEightDigitCode 02040205
DrainageAreaMeasure/MeasureValue 37.30
DrainageAreaMeasure/MeasureUnitCode sq mi
ContributingDrainageAreaMeasure/MeasureValue 37.3
ContributingDrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 39.99343906000000
LongitudeMeasure -75.8277248000000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 42
CountyCode 029
ProviderName NWIS