| Valcour Island | |
| Map: | New York |
| Map Width: | 250px |
| Coordinates: | 44.6217°N -73.4172°W |
| Location: | Lake Champlain |
| Area Acre: | 968 |
| Area Footnotes: | [1] |
| Length Mi: | 2 |
| Width Mi: | 1 |
| Coastline Ft: | --> |
| Elevation Ft: | 148 |
| Country: | United States |
| Country Admin Divisions Title: | State |
| Country Admin Divisions: | New York |
| Country Admin Divisions Title 1: | County |
| Country Admin Divisions 1: | Clinton |
| Country Admin Divisions Title 2: | Towns |
| Country Admin Divisions 2: | Peru, Plattsburgh |
| Country Admin Divisions Title 3: | Owner |
| Country Admin Divisions 3: | New York State Department of Environmental Conservation |
Valcour Island is a 968acres[1] island in Lake Champlain in Clinton County, New York, United States. The island is mostly in the Town of Peru and partly in the Town of Plattsburgh, southeast of the City of Plattsburgh. It is within the boundaries of the Adirondack Park.
Valcour Island, about 2miles long and 1miles wide, lies by the western shore of Lake Champlain, forming one side of a narrow strait against the New York mainland. Its shores are alternately rocky, craggy outcroppings and sandy beaches. Several protected bays provide anchorages. The Bluff Point Light stands on the western shore. It guided boats through the narrow strait from 1871 until 1930 when it was replaced by a steel tower.
It is the fourth-largest island in Lake Champlain. The only larger Islands are Grand Isle, North Hero and Isle la Motte, all part of Vermont.
The island contains part of an exposed Ordovician fossil reef, and was dedicated as part of the Chazy Fossil Reef National Natural Landmark in 2009.[2]
On October 11, 1776, a naval engagement known as the Battle of Valcour Island between British and United States naval forces under Benedict Arnold was fought in the strait adjacent to the island.
Valcour was the site of several farms and summer homes (and one short-lived utopian community, the Dawn Valcour Society[3]) from the nineteenth century until the 1970s, when New York State completed its purchase of the island. The island is now within the Adirondack Park, and is managed by the New York State Department of Environmental Conservation as the "Valcour Island Primitive Area".[1]