Champlain Valley southward into the Valley of Vermont. The Vermont Lowlands are primarily underlain by sedimentary rocks, especially limestone and shale, though metamorphic rocks such as marble and slate are also present. Lake Champlain is situated in the Champlain Valley between the Green Mountains of Vermont and the Adirondack Mountains of New York, drained northward by the Richelieu River into the St. Lawrence River at Sorel-Tracy, Quebec (northeast of Montreal). Major tributaries of Lake Champlain include Otter Creek and the Winooski, Missisquoi, and Lamoille rivers in Vermont, and the Ausable, Chazy, Boquet, and Saranac rivers in New York. Lake Champlain also receives
U.S. Route 11 in New York south of Champlain, bypassing the village completely. In northeastern St. Lawrence County, US 11 originally served the neighboring hamlets of Brasher Falls and Winthrop. The route left its modern alignment in Stockholm (at Stockholm Center) and rejoined it in Lawrence (at Coteys Corner). On September 1, 1982, ownership and maintenance of CR 110, a county road extending from Stockholm Center to Coteys Corner on a direct east–west routing, was transferred from St. Lawrence County to the state of New York as part of a highway maintenance swap between the two levels of government and the village of Canton. The new