Lake Champlain level. Lake Champlain is in the Lake Champlain Valley between the Green Mountains of Vermont and the Adirondack Mountains of New York, drained northward by the -long Richelieu River into the St. Lawrence River at Sorel-Tracy, Quebec, northeast and downstream of Montreal, Quebec. It also receives the waters from the -long Lake George, so its basin collects waters from the northwestern slopes of the Green Mountains and the northernmost eastern peaks of the Adirondack Mountains. Lake Champlain drains nearly half of Vermont, and approximately 250,000 people get their drinking water from the lake. The lake is fed in Vermont by
Champlain, New York Champlain, New York Champlain is a town in Clinton County, New York, United States. The population was 5,754 at the 2010 census. The town is located on the west shore of Lake Champlain, near the north end of the lake. The town occupies the northeast corner of Clinton County and the state of New York. Within the town are two villages: Champlain and of Rouses Point. Nearby Lake Champlain was an important military and trade route during the colonial period. The lake and the town were named in honor of Samuel de Champlain, who first surveyed the area in 1609.