News

Upcoming Events:
2019 Events
GSA Annual Meeting
Phoenix, Arizona
September 22–25, 2019
Coalition Annual Meeting
Minneapolis, Minnesota
April 12–13, 2019
Geologic Mapping Forum
Minneapolis, Minnestoa
April 10–12, 2019
GSA NC Section Meeting
Ames, Iowa
March 25–27, 2019
Past Events:

Why a geologic mapping coalition?

In the late 1990s, the state geological surveys of Illinois, Indiana, Michigan, and Ohio joined with the U.S. Geological Survey to form the Central Great Lakes Geologic Mapping Coalition. More recently, the Coalition has expanded to include four additional states bordering the Great Lakes—Minnesota, New York, Pennsylvania, and Wisconsin. These eight states have similar geologic conditions and must address common societal issues about land and water resources, the environment, and geologic hazards. By integrating their expertise and resources, the geological surveys are addressing these issues more effectively than could any one agency.

Priority Areas


*click a state to view its corresponding page
Minnesota Wisconsin Michigan Illinois Indiana Ohio Ontario Pennsylvania New York

Members and Affiliates

Coalition in Action