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Originally constructed as a feeder reservoir for the Miami-Erie Canal, Grand Lake St. Marys was for many years recognized as the largest man-made reservoir in the world. This large lake is the gateway to swimming, boating, camping and fishing in one of Ohios oldest state parks
Camping, cabins, boating, fishing, swimming, picnicking, hunting, snowmobiling, cross country skiing, volleyball, playground
Boat Launch, Cabins, Dump Station, Flush Toilet, Grill, Hookup - Electric, Laundry, Pets OK, Picnic Table, Playground, Showers, Volleyball, Wi-Fi
$20-$30 per night
Q: How much are cabins -Guest
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Grand Lake St. Marys State Park
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