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
New York State Canal System Cayuga Lake to the Erie Canal; the Oswego Canal connects the Erie Canal to Lake Ontario; and the Champlain Canal connects the Hudson River to Lake Champlain. In 1903 New York State legislature authorized construction of the "New York State Barge Canal" as the "improvement of the Erie, the Oswego, the Champlain and the Cayuga and Seneca Canals". In 1905, construction of the Barge Canal began; it was completed in 1918, at a cost of $96.7 million. It opened to through traffic May 15, 1918. The Barge Canal's new route took advantage of rivers (such as the Mohawk River, Oswego