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 >  EPA_GLNPO >  EPA_GLNPO-P523

P523 - Grand River (EPA_GLNPO-P523) 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 "P523 - Grand River" and has the identifier EPA_GLNPO-P523. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)04110004.

This site is located in Lake County County, Ohio at 41.7500000000 degrees latitude and -81.2666670000 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-P523" 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 1989 - 2006
Biological, Counts 2004 - 2006
Biological, Fish 1989 - 2004
Inorganics, Minor, Metals 2004 - 2006
Not Assigned 2003 - 2008
Organics, BDEs 2003 - 2006
Organics, Other 2003 - 2008
Organics, PCBs 2003 - 2008
Organics, Pesticide 2003 - 2006
Physical 1989 - 2006
*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-P523
MonitoringLocationName P523 - Grand River
MonitoringLocationTypeName Great Lake
MonitoringLocationDescriptionText Fish Monitoring Port - Grand River (L. Erie)
HUCEightDigitCode 04110004
LatitudeMeasure 41.7500000000
LongitudeMeasure -81.2666670000
SourceMapScaleNumeric 24000
HorizontalCollectionMethodName Interpolation-Map
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 39
CountyCode 085
ProviderName STORET