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 >  EPA_GLNPO >  EPA_GLNPO-MI18M

MI18M (EPA_GLNPO-MI18M) 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 "MI18M" and has the identifier EPA_GLNPO-MI18M. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)04060200.

This site is located in Allegan County County, Michigan at 42.7333455556 degrees latitude and -87.0001027778 degrees longitude using the datum UNKWN. The horizontal location collection method was "Loran C" and the accuracy is 100 m. This site is at an elevation of 176 m 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 "EPA_GLNPO-MI18M" 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 1994 - 2022
Biological, Algae, Phytoplankton 1994 - 2004
Biological, Algae, Phytoplankton, Photosynthetic Pigments 1983 - 2022
Biological, Algae,Phytoplankton,Cyanobacteria,Photosynthetic 1996 - 2014
Biological, Counts 1994 - 2022
Information 1983 - 2023
Inorganics, Major, Metals 2004 - 2021
Inorganics, Major, Non-metals 1983 - 2021
Inorganics, Minor, Metals 1994 - 2021
Inorganics, Minor, Non-metals 2016 - 2019
Not Assigned 1994 - 2023
Nutrient 1983 - 2021
Organics, Other 1994 - 2019
Organics, PCBs 1994 - 1997
Organics, Pesticide 1994 - 1997
Physical 1983 - 2023
Physical, Habitat 2022 - 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 EPA_GLNPO
OrganizationFormalName EPA Great Lakes National Program
MonitoringLocationIdentifier EPA_GLNPO-MI18M
MonitoringLocationName MI18M
MonitoringLocationTypeName Great Lake
MonitoringLocationDescriptionText Open Lake Master station
HUCEightDigitCode 04060200
LatitudeMeasure 42.7333455556
LongitudeMeasure -87.0001027778
HorizontalAccuracyMeasure/MeasureValue 100
HorizontalAccuracyMeasure/MeasureUnitCode m
HorizontalCollectionMethodName Loran C
HorizontalCoordinateReferenceSystemDatumName UNKWN
VerticalMeasure/MeasureValue 176
VerticalMeasure/MeasureUnitCode m
VerticalCollectionMethodName Unknown
VerticalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 26
CountyCode 005
ProviderName STORET