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-PMS10

East side of Francis S. Key Bridge (21VASWCB-PMS10) 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 "East side of Francis S. Key Bridge" and has the identifier 21VASWCB-PMS10. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)02070010.

This site is located in District Of Columbia County, District Of Columbia at 38.9022000000 degrees latitude and -77.0697000000 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-PMS10" 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, Algae, Cyanobacteria 2001 - 2025
Biological, Algae, Phytoplankton 2001 - 2025
Biological, Photosynthetic Pigments 2001 - 2025
Inorganics, Major, Non-metals 2001 - 2025
Nutrient 2001 - 2025
Organics, Other 2007 - 2025
Physical 2001 - 2025
*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-PMS10
MonitoringLocationName East side of Francis S. Key Bridge
MonitoringLocationTypeName Estuary
MonitoringLocationDescriptionText CB Chesapeake Bay Program split sample program station. Data in CEDS are DCLS analytical results to be utilized for inter-laboratory comparison. Data are collected by District of Columbia Water Quality laboratory personnel Quarterly.
HUCEightDigitCode 02070010
LatitudeMeasure 38.9022000000
LongitudeMeasure -77.0697000000
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 11
CountyCode 001
ProviderName STORET