The Cleveland Museum of Natural History (CMNH) Natural Areas Division has been involved in land protection and stewardship since 1956, with the mission to identify, protect, and steward the best remnants of native habitats present in the Lake Erie and upper Ohio River drainage prior to settlement.

Summary:

Occupying an ancient, abandoned channel of the Grand River, Mentor Marsh became Ohio’s first State Nature Preserve in 1971. It is one of the largest natural marshes remaining along the Lake Erie shoreline. It is also a registered National Natural Landmark with the National Park Service. At 801 acres, Mentor Marsh is one of the larg