A report on Vermont, New York (state) and Lake Champlain

Lake Champlain (Lac Champlain; Abenaki: Pitawbagw ["At Lake Champlain" (loc.):Pitawbagok]; ) is a natural freshwater lake in North America mainly within the borders of the United States (in the states of Vermont and New York) but also across the Canada–U.S. border into the Canadian province of Quebec.

It borders the states of Massachusetts to the south, New Hampshire to the east, and New York to the west, and the Canadian province of Quebec to the north.

The state of New York is bordered by New Jersey and Pennsylvania to the south, and Connecticut, Massachusetts, and Vermont to the east; it has a maritime border with Rhode Island, east of Long Island, as well as an international border with the Canadian provinces of Quebec to the north and Ontario to the northwest.

The geography of the state is marked by the Green Mountains, which run north–south up the middle of the state, separating Lake Champlain and other valley terrain on the west from the Connecticut River valley that defines much of its eastern border.

The state's borders include a water boundary in (clockwise from the west) two Great Lakes (Lake Erie and Lake Ontario, which are connected by the Niagara River); the provinces of Ontario and Quebec in Canada, with New York and Ontario sharing the Thousand Islands archipelago within the Saint Lawrence River, while most of its border with Quebec is on land; it shares Lake Champlain with the New England state of Vermont; the New England state of Massachusetts has mostly a land border; New York extends into Long Island Sound and the Atlantic Ocean, sharing a water border with Rhode Island, while Connecticut has land and sea borders.