Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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 user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  STORET >  21VASWCB >  21VASWCB-IR2014N1934

Potomac River near the Rt. 301 Bridge (21VASWCB-IR2014N1934) site data in the Water Quality Portal

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

This estuary site, maintained by the VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY (identifier 21VASWCB), has the name "Potomac River near the Rt. 301 Bridge" and has the identifier 21VASWCB-IR2014N1934. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)02070011.

This site is located in Charles County County, Maryland at 38.3579000000 degrees latitude and -76.9934000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolation-Map" and the accuracy is 100 ft. The source map scale is 1:24000. This site is at an elevation of 0 ft No vertical location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "21VASWCB-IR2014N1934" 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*
Inorganics, Minor, Metals 2014 - 2014
Inorganics, Minor, Non-metals 2014 - 2014
*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 21VASWCB
OrganizationFormalName VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY
MonitoringLocationIdentifier 21VASWCB-IR2014N1934
MonitoringLocationName Potomac River near the Rt. 301 Bridge
MonitoringLocationTypeName Estuary
MonitoringLocationDescriptionText PReP incident. Biomass being collected on fishing nets. Occurred January 2014. JST
HUCEightDigitCode 02070011
LatitudeMeasure 38.3579000000
LongitudeMeasure -76.9934000000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 100
HorizontalAccuracyMeasure/MeasureUnitCode ft
HorizontalCollectionMethodName Interpolation-Map
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 0
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Other
VerticalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 24
CountyCode 017
ProviderName STORET