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
Partridge Island (Nova Scotia) kilometres of water are forced through a channel that is barely five kilometres (3.1 miles) wide, raising and lowering the water levels inside the Minas Basin by 12 to 15 metres (39 to 49 feet). Tidal currents in the channel have been calculated to reach speeds of nearly 20 kilometres per hour (12.4 miles per hour). Bay of Fundy tides are the highest in the world and the highest of all occur in the Minas Basin. Several factors affect the Fundy tides including water depth and the shape of the coastline. Both contribute to a natural Fundy tidal oscillation, or