Saint John River (Bay of Fundy) Saint John River (Bay of Fundy) The Saint John River (; Maliseet: "Wolastoq") is a river, approximately long, located principally in the Canadian province of New Brunswick, but also in and arising from three primary sources in the province of Quebec and the U.S. state of Maine. It forms part of the Canada–United States border in two different stretches along its length. The river drains an area of approximately , of which slightly more than half is located in New Brunswick. Along that portion of the Atlantic shoreline of North America that lies between the St. Lawrence River and the
Ungava Bay to Quebec. Although it is quite close to the open Atlantic (separated only by Hudson Strait), Ungava Bay is generally considered part of the Arctic Ocean because the land surrounding it has an exceedingly cold climate. Ungava Bay is separated from Hudson Bay by the Ungava Peninsula. Bathymetric studies suggest Ungava Bay may be the remnant of an impact crater (age unknown) approximately 225 km in diameter. The southwestern corner of Ungava Bay, along with Bay of Fundy, has either the highest or second-highest tidal ranges in the world. Some sources estimate the spring tide range at the mouth of