Wild Swim Atlas

    Grand Lake St. Marys

    Saint Marys, OhioLakeSwim in designated areas

    Directions
    Getting there

    Grand Lake St. Marys is an Ohio state-park lake with designated public swimming areas.

    Water
    Lake
    Managed by
    Ohio Department of Natural Resources, Division of Parks and Watercraft

    Getting there

    Grand Lake St. Marys is near Saint Marys, Ohio. Use the coordinates below in your maps app, and check road access with the land manager before you go.

    40.5451, -84.4381

    Get directions

    Rules to know before you go

    • Swim only in designated areas.
    • Do not swim, dive, wade or bathe from watercraft outside designated areas.

    Swimming spots nearby

    All of Ohio
    Designated swimming areas12 mi

    Lake Loramie

    Lake
    Lake Loramie State Park, Minster
    Two public swim beaches29 mi

    Indian Lake

    Lake
    Blackhawk Island
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