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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 >  EPA_GLNPO >  EPA_GLNPO-P307

Grid0710-Rockport (EPA_GLNPO-P307) site data in the Water Quality Portal

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

This great lake site, maintained by the EPA Great Lakes National Program (identifier EPA_GLNPO), has the name "Grid0710-Rockport" and has the identifier EPA_GLNPO-P307.

This site is located in Presque Isle County County, Michigan at 45.2500000000 degrees latitude and -83.0166670000 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 "EPA_GLNPO-P307" 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 1977 - 2010
Biological, Counts 1977 - 2010
Biological, Fish 1977 - 2012
Inorganics, Minor, Metals 1982 - 2012
Not Assigned 1982 - 2012
Organics, BDEs 2000 - 2012
Organics, Other 1977 - 2012
Organics, PCBs 1977 - 2012
Organics, Pesticide 1977 - 2012
PFAS,Perfluorinated Alkyl Substance 2012 - 2012
Physical 1977 - 2010
Radiochemical 1977 - 2000
*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 EPA_GLNPO
OrganizationFormalName EPA Great Lakes National Program
MonitoringLocationIdentifier EPA_GLNPO-P307
MonitoringLocationName Grid0710-Rockport
MonitoringLocationTypeName Great Lake
MonitoringLocationDescriptionText Fish Monitoring Grid 0710 - Rockport (L. Huron)
LatitudeMeasure 45.2500000000
LongitudeMeasure -83.0166670000
SourceMapScaleNumeric 24000
HorizontalCollectionMethodName Interpolation-Map
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 26
CountyCode 141
ProviderName STORET