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KNOX MARSH RD BRIDGE (11113300-07-BLM) 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 New Hampshire Department Of Environmental Services (BEACH) (identifier 11113300), has the name "KNOX MARSH RD BRIDGE" and has the identifier 11113300-07-BLM. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)01060003.

This site is located in Strafford County County, New Hampshire at 43.1744300000 degrees latitude and -70.9177900000 degrees longitude using the datum NAD83. The horizontal location collection method was "GPS-Unspecified" and the accuracy is 15 m. This site is at an elevation of 98 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 "11113300-07-BLM" 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*
Biological, Algae, Phytoplankton, Photosynthetic Pigments 1990 - 1990
Biological, Counts 2000 - 2014
Information 1990 - 1990
Inorganics, Major, Metals 2013 - 2015
Inorganics, Major, Non-metals 1990 - 2015
Inorganics, Minor, Metals 1990 - 2015
Inorganics, Minor, Non-metals 1990 - 1990
Microbiological 1990 - 2015
Nutrient 1990 - 2015
Organics, Other 2013 - 2015
Physical 1990 - 2019
*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 11113300
OrganizationFormalName New Hampshire Department Of Environmental Services (BEACH)
MonitoringLocationIdentifier 11113300-07-BLM
MonitoringLocationName KNOX MARSH RD BRIDGE
MonitoringLocationTypeName River/Stream
HUCEightDigitCode 01060003
LatitudeMeasure 43.1744300000
LongitudeMeasure -70.9177900000
HorizontalAccuracyMeasure/MeasureValue 15
HorizontalAccuracyMeasure/MeasureUnitCode m
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 98
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Other
VerticalCoordinateReferenceSystemDatumName NAVD88
CountryCode US
StateCode 33
CountyCode 017
ProviderName STORET