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Access By Boat Only - Boat rentals are available nearby, call the park for information. Mary Island State Park comprises 12 heavily-wooded acres with steep rocky outcroppings offering spectacular views of the Canadian shore or the shipping channel. Boats may be beached or moored near campsites. The park has a picnic area and several foot trails.

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Mary Island State Park Campground

Mary Island, Thousand Islands, NY 13624

(315) 654-2522

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Must have proof of current rabies vaccination - certificate inoculation or dated collar tag. Household pets only, caged or on a leash, not more than 6 feet. Not permitted in picnic areas.

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