Black Mountain (Washington County, New York) Black Mountain (Washington County, New York) Black Mountain is a mountain located in Washington County, New York, of which its peak is the highest point. Isolated from the rest of the Adirondack Mountains by Lake George, Black Mtn. has the seventh highest topographic prominence of all the mountains in New York. Black Mountain stands within the watershed of Lake Champlain, thence into Canada's Richelieu River, the Saint Lawrence River, and into the Gulf of Saint Lawrence. The northwest and south sides of Black Mtn. drain into Lake George, thence into La Chute River, and Lake Champlain. The northeast side of
Champlain, New York States border at Champlain and travels south to Albany, connecting to the New York State Thruway. U.S. Route 9 parallels I-87, and U.S. Route 11 runs east-west across the town. U.S. Route 2 intersects US-11 by Rouses Point. New York State Route 9B intersects US-11 in the northeast and US-9 in the southern part of Champlain, providing a highway closer to Lake Champlain. New York State Route 276 partly runs along the international border. As of the 2000 census, there were 5,791 people, 2,386 households, and 1,562 families residing in the town. The population density was 113.1 people per square