|Grand Lake St. Marys
Originally constructed as a feeder reservoir for the Miami-Erie Canal, Grand Lake St. Marys is the largest inland lake in Ohio. It is approximately 9 miles long and 3 miles wide boasting 52 miles of shoreline covering an area of more than 12,900 acres. Three lighthouses stand guard around the lake. The oldest was erected in 1923 and the newest in 2003.
Grand Lake Saint Marys State Park is open for year-round boating, hunting, fishing, swimming and picnics.The campground offers a nature center and a boat ramp with overnight courtesy docks.
Ohio's only airport for seaplanes is on The Grand Lake St. Marys Seaplane Base.
St. Marys Fish Hatchery located on the lake's eastern shore is operated by the ODNR Division of Wildlife. The hatchery raises saugeye, walleye, channel catfish and bass which produces stock for Ohio's public fishing waters.
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The ODNR Division of Parks & Recreation operates and maintains seven boat ramps. Boats and seasonal docks can be rented at the marina.
Open to boats of all types there is no horsepower limit on Grand Lake St. Marys. There is, however, a 300 ft no-wake zone enforced along the entire shore. Travel restrictions prohibit boats from entering the state wildlife refuge found at the southwest corner of the lake.
Grand Lake St. Marys provides seven air-conditioned rental cabins. Two small, two modern and three large cabins can be rented from May to October.
The campground has 216 campsites with more than 135 equipped with electricity.
Please review the Lake Resource Guide for additional lodging in the area.
Grand Lake St. Marys is located in west central Ohio near the Indiana border in Mercer and Auglaize counties. The city of St. Marys is located near the northeast corner of the lake and Celina is on the northwest corner. It is 23 miles south-west of Lima.
The Neil Armstrong Air and Space Museum is located in nearby Wapakoneta. Other nearby towns: Spencerville, Coldwater and Fort Recovery.
Fun times at Grand Lake St. Marys
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