  lake champlain (french: lac champlain) is a natural freshwater lake in north america, located mainly within the borders of the united states (states of vermont and new york) but partially situated across the canada-united states border in the canadian province of quebec. the new york portion of the champlain valley includes the eastern portions of clinton county and essex county. most of this area is part of the adirondack park. there are recreational opportunities in the park and along the relatively undeveloped coastline of lake champlain. the cities of plattsburgh, new york and burlington, vermont are to the north of the lake, and the village of ticonderoga, new york is located in the southern part of the region. the quebec portion is located in the regional county municipalities of le haut-richelieu and brome-missisquoi. ==geology== thumb|left|150px|landsat photo the champlain valley is the northernmost unit of a landform system known as the great appalachian valley, which system stretches from quebec to alabama. the champlain valley is a physiographic section of the larger saint lawrence valley, which in turn is part of the larger [[appalachian mountains|app
Biosphere_reserves_of_the_United_States Borders_of_New_York Borders_of_Vermont CanadaaUnited_States_border Geography_of_MontA(c)rA(c)gie International_lakes_of_North_America Lake_Champlain Lakes_of_Estrie Lakes_of_New_York Lakes_of_Vermont Landforms_of_Addison_County,_Vermont Landforms_of_Chittenden_County,_Vermont Landforms_of_Clinton_County,_New_York Landforms_of_Essex_County,_New_York Landforms_of_Rutland_County,_Vermont Landforms_of_Washington_County,_New_York Tributaries_of_the_Saint_Lawrence_River Visitor_attractions_in_Essex_County,_New_York