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 >  MDDNR >  MDDNR-LE2.3

Point Lookout (MDDNR-LE2.3) site data in the Water Quality Portal

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

This estuary site, maintained by the Maryland Department of Natural Resources (identifier MDDNR), has the name "Point Lookout" and has the identifier MDDNR-LE2.3. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)02070011.

This site is located in St. Mary's County County, Maryland at 38.0215000000 degrees latitude and -76.3477020000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "MDDNR-LE2.3" 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 1984 - 2017
Biological, Algae, Phytoplankton 1984 - 2017
Information 1984 - 2017
Inorganics, Major, Non-metals 1984 - 2015
Nutrient 1984 - 2017
Organics, Other 1984 - 2017
Physical 1984 - 2017
*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 MDDNR
OrganizationFormalName Maryland Department of Natural Resources
MonitoringLocationIdentifier MDDNR-LE2.3
MonitoringLocationName Point Lookout
MonitoringLocationTypeName Estuary
MonitoringLocationDescriptionText MOUTH OF POTOMAC RIVER; BOUNDARY BETWEEN CB5 AND LE2; RIVER CHANNEL
HUCEightDigitCode 02070011
LatitudeMeasure 38.0215000000
LongitudeMeasure -76.3477020000
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 24
CountyCode 037
ProviderName STORET