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
Geography of New Brunswick and Kennebecasis River. Other water bodies within the Saint John River system are Grand Lake (which itself is fed by the Salmon River), Washademoak Lake (fed by the Canaan River), and Belleisle Bay. The high tides of the Bay of Fundy often cause the Saint John River to flow upstream, an effect most pronounced at the Reversing Falls in Saint John. The Petitcodiac River, Shepody River, Tantramar River, and Memramcook River empty into Chignecto Bay at the head of the Bay of Fundy. Like the Saint John River, the Bay of Fundy tides cause another upstream phenomenon, known as a