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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-400218075334501

CH 201 (USGS-400218075334501) site data in the Water Quality Portal

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

This well site, maintained by the USGS Pennsylvania Water Science Center (identifier USGS-PA), has the name "CH 201" and has the identifier USGS-400218075334501. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)02040203. See more details of this site the the USGS NWIS Web page for this site.

This site is located in Chester County County, Pennsylvania at 40.03844015000000 degrees latitude and -75.5621485000000 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. This site is at an elevation of 403 feet and the accuracy of the elevation measurement, collected using the method "Interpolated from topographic map." is 10 feet. The vertical coordinate reference system is NGVD29.

This site is located in the "Piedmont and Blue Ridge carbonate-rock aquifers" aquifer. The geologic formation type is Conestoga Formation. The well was contructed on 19580101. The well depth is 208 ft.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-400218075334501" 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*
Information 1964 - 1964
Inorganics, Major, Metals 1964 - 1983
Inorganics, Major, Non-metals 1964 - 1983
Inorganics, Minor, Metals 1964 - 1983
Inorganics, Minor, Non-metals 1983 - 1983
Nutrient 1964 - 1983
Organics, Other 1964 - 1964
Physical 1964 - 1983
*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-400218075334501
MonitoringLocationName CH 201
MonitoringLocationTypeName Well
HUCEightDigitCode 02040203
LatitudeMeasure 40.03844015000000
LongitudeMeasure -75.5621485000000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 403
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue 10
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName Interpolated from topographic map.
VerticalCoordinateReferenceSystemDatumName NGVD29
CountryCode US
StateCode 42
CountyCode 029
AquiferName Piedmont and Blue Ridge carbonate-rock aquifers
FormationTypeText Conestoga Formation
ConstructionDateText 19580101
WellDepthMeasure/MeasureValue 208
WellDepthMeasure/MeasureUnitCode ft
ProviderName NWIS