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EPA's Great Lakes National Program Office conducts monitoring programs that sample the water, aquatic life, sediments, and air in order to assess the health of the Great Lakes ecosystem.

Research Vessel (R/V) Lake Guardian
R/V Lake Guardian operates on the open waters of the Great Lakes.

Biology & Benthic Invertebrates
Benthic community health in the Great Lakes.

Data Projects
Data-intensive mass balance projects and databases.

Dissolved Oxygen
GLNPO monitoring of the dissolved oxygen in the water column of Lake Erie.

Contaminants in Great Lakes fish and related human health concerns.

Great Minds, Great Lakes
Everything you'll want to know about the Great Lakes.  Includes ideas and exercises for teachers and students to enhance their Great Lakes experience.

Straightforward measures on the health of the Great Lakes ecosystem.

"The study of physical, chemical, and biological properties in freshwater systems"

Journal articles and reports on Monitoring research in the Great Lakes.

Identification and clean-up of areas with contaminated sediments.

The Integrated Atmospheric Deposition Network (IADN)
Atmospheric monitoring of toxic air pollutants to the Great Lakes.

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