Grand Lake St. Marys State Park
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Grand Lake-Saint Marys State Park is a Ohio State Park, west of St. Marys, and south-east of Celina, 23 miles (37 km) south-west of Lima in the north-western part of the U.S. state of Ohio. Grand Lake covers 13,500 acres (5,500 ha) in Mercer and Auglaize counties. Grand Lake is the largest inland lake in Ohio in terms of land area, but is extremely shallow, with an average depth of only 5 to 7 feet (1.5 to 2.1 m).