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.

WQP Home >  Providers >  STORET >  MWRA_WQX >  MWRA_WQX-MWRA-052

Inner Harbor, Mystic River, below Earhart Dam, at Somerville Marginal MWR205 (MWRA_WQX-MWRA-052) site data in the Water Quality Portal

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

This estuary site, maintained by the Massachusetts Water Resources Authority (identifier MWRA_WQX), has the name "Inner Harbor, Mystic River, below Earhart Dam, at Somerville Marginal MWR205" and has the identifier MWRA_WQX-MWRA-052.

This site is located in Middlesex County County, Massachusetts at 42.3942152000 degrees latitude and -71.0758155000 degrees longitude using the datum UNKWN. 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 "MWRA_WQX-MWRA-052" 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, Phytoplankton, Photosynthetic Pigments 2018 - 2022
Physical 2018 - 2022
*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 MWRA_WQX
OrganizationFormalName Massachusetts Water Resources Authority
MonitoringLocationIdentifier MWRA_WQX-MWRA-052
MonitoringLocationName Inner Harbor, Mystic River, below Earhart Dam, at Somerville Marginal MWR205
MonitoringLocationTypeName Estuary
LatitudeMeasure 42.3942152000
LongitudeMeasure -71.0758155000
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 25
CountyCode 017
ProviderName STORET