Data, maps, and reports are available at the lake-level (Great Lakes), for each state, and for the five-state region as a whole by clicking on the links below: Brief reports that summarize, analyze, ...

A new interactive map shows how Michigan's lakes may expand ... and Erie—making the "Great Lakes State" particularly susceptible to water-level changes. Expanding shorelines could see ...

The developing trail between Michigan and Ohio is spurring conversation among the eight Great Lakes states about a new regional ... bicycle-friendly, creating maps and signage and working with ...