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
Lake Champlain as late as the 1960s, but rejected for various reasons. The lake is also part of the 740-mile Northern Forest Canoe Trail, which begins in Old Forge, New York, and ends in Fort Kent, Maine. Burlington, Vermont (pop. 42,217, 2010 Census) is the largest city on the lake. The 2nd and 3rd most populated cities/towns are Plattsburgh, New York, and South Burlington, Vermont, respectively. The fourth-largest community is the town of Colchester. Lake Champlain contains roughly 80 islands, three of which comprise four entire Vermont towns (most of Grand Isle County). The largest islands: All active navigational aids on the