thirty-nine percent of the island is currently owned by the thousand island land trust (tilt). their of private conservation lands are currently spread over different parts of the island. tilt currently owns potter's beach ( - the largest naturally occurring sand beach on the american side of the thousand islands), potter's forest preserve (), mid river farm preserve (), douglas howard-smith preserve (), rusho farm preserve (), delaney farm preserve (), heineman forest preserve () and grindstone nature trail (). tilt acts as a steward of another of wetlands, forest and grasslands on privately held property through conservation easements.