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WQP Home >  Providers >  STORET >  NWRSFWS_WQX >  NWRSFWS_WQX-GRM09

Concord R at Route 20 (NWRSFWS_WQX-GRM09) site data in the Water Quality Portal

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

This river/stream site, maintained by the National Wildlife Refuge System, Fish and Wildlife Service (identifier NWRSFWS_WQX), has the name "Concord R at Route 20" and has the identifier NWRSFWS_WQX-GRM09. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)01070005.

This site is located in Middlesex County County, Massachusetts at 42.3629900000 degrees latitude and -71.3729100000 degrees longitude using the datum NAD83. The horizontal location collection method was "GPS-Unspecified" and the accuracy is 0.5 Sec.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "NWRSFWS_WQX-GRM09" 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.

Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed February, 2025.

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*
Nutrient 2016 - 2017
Organics, Other 2016 - 2017
Physical 2016 - 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 NWRSFWS_WQX
OrganizationFormalName National Wildlife Refuge System, Fish and Wildlife Service
MonitoringLocationIdentifier NWRSFWS_WQX-GRM09
MonitoringLocationName Concord R at Route 20
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText Concord River at Rte 20. Access is via canoe and samples are taken from canoe. Water depth based on first entry from 2017 sampling effort.
HUCEightDigitCode 01070005
LatitudeMeasure 42.3629900000
LongitudeMeasure -71.3729100000
HorizontalAccuracyMeasure/MeasureValue 0.5
HorizontalAccuracyMeasure/MeasureUnitCode Sec
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 25
CountyCode 017
ProviderName STORET