Grand Lake St. Mary’s State Park 
834 Edgewater Drive
St. Marys, OH 45885
419-394-3611
https://ohiodnr.gov/wps/portal/gov/odnr/go-and-do/plan-a-visit/find-a-property/grand-lake-st-marys-state-park
State Park: Birding, Camp, Fish, Hike, Picnic, Walk, Water Sports
This large lake is the gateway to swimming, boating, camping and fishing in one of Ohio’s oldest state parks.