National Park Service

Great Lakes Network (GLKN)

Great Lakes Network

Endangered piping plover chick at Apostle Islands NL View from Apostle Islands National Lakeshore A climber carefully approaches an eagle nest Pictured Rocks beach Isle Royale National Park Weather station at St. Croix NSR Scarlet tanager at Indiana Dunes National Lakeshore Storm runoff pipe at Mississippi NR&RA Vegetation sampling field crew at Mississippi NR&RA Bluebird at Indiana Dunes National Lakeshore Spotted salamander (Ambystoma maculatum)

The GLKN Inventory and Monitoring Program, comprised of nine national park units,is one of 32 National Park Service I&M Networks across the country. As a program of the National Park Service, Great Lakes I&M scientists conduct long-term monitoring of critical park resources, or “Vital Signs,” at nine national park units in Michigan, Indiana, Minnesota, and Wisconsin. The Network analyzes and summaries these monitoring data and provides it to the parks so that they can make more scientifically-informed management decisions.

The GLKN consists of nine park units that cover one million acres, extending from the boreal forests of northern Minnesota to the sand dunes of southern Lake Michigan. The parks reflect diverse landscapes and human dimensions ranging from remote wilderness to metropolitan areas.

This web site provides information about the Network's inventory and monitoring work at these parks. Visit the parks in this Network to discover the particular resources found at these special places.

Featured Information

GLKN Newsletter: Spring 2017

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This issues takes a look at Great Lakes's shorelines and the remarkable features of these assets in our parks...
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Great Lakes Science Report 2016

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This report recognizes and celebrates the 10-year anniversary of field work monitoring the "vital signs" in our network parks. It also recognizes long-term monitoring being conducted by staff in each of the parks, some of which has been going on since long before the Inventory and Monitoring program came into being. Finally, this report is also our network's contribution to the National Park Service Centennial.
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Video: Forest Vegetation Monitoring in Great Lakes Parks

Video: Monitoring Aquatic Contaminants in Bald Eagle Nestlings

Report: Microplastics are Everywhere!

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Microplastics in aquatic environments are a byproduct of the human uses of plastics. Microplastic levels in the Mississippi and St. Croix Rivers were sampled.
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Video: Great Lakes Network Water Quality Monitoring

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Last Updated: July 12, 2017 Contact Webmaster