Addison

Addison, county, western Vermont, U.S. It is bounded by Lake Champlain (constituting the border with New York state) to the west and the Green Mountains to the east. Lowlands in the west give way to foothills and mountains in the east. The county is drained by Otter Creek, the state’s longest stream, and its tributaries, the Lemon Fair, New Haven, Leicester, and Middlebury rivers. Other waterways include Lake Dunmore, Winona Lake, and Little Otter and...