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
New York State Route 9B New York State Route 9B New York State Route 9B (NY 9B) is a state highway located within Clinton County, New York, in the United States. The route serves as a connector between its parent route, U.S. Route 9 (US 9), in the town of Champlain and US 11 in the village of Rouses Point. While US 9 bypasses Rouses Point to the west, NY 9B veers east to serve the village and the shoreline of Lake Champlain. NY 9B is the northernmost section of the Lakes to Locks Passage, an All-American Road. Modern NY 9B was the original alignment