Fundy Biosphere Reserve area of the reserve corresponds with Fundy National Park. The reserve also includes the city of Moncton, which is the only official bilingual city in Canada. The Fundy Biosphere Reserve extends over an area of 442,250 hectares adjacent to the upper Bay of Fundy in New Brunswick. The reserve begins at Saint Martins, passes through Moncton, including almost all of Albert County, and stops at the Tantramar Marsh, close to Sackville. The borders of the reserve follow the limits of the watershed of the upper region of the Bay of Fundy. The reserve is divided into three zones: The initiative
Bay of Fundy various rivers which empty into it. Near the mouth of the Saint John River, where it passes through the city of Saint John, is the famous Reversing Falls. Here the changing tide causes alternating strong upriver and downriver flows several times a day as the tidal cycle changes. A narrow granite gorge and rocky bottom heavily restricts waterflow and creates strong rapids that flow upriver at high tide, and downriver at low tide. Rivers in the upper Bay of Fundy have a smaller flow-rate than the Saint John, and a shallower slope. As a result, extensive mud flats are deposited