Saint John River is the main waterway of New Brunswick, Canada. It is 390 miles (628 kilometers) long and drains more than 21,500 square miles (55,680 square kilometers). The Saint John is formed by several small streams that rise on or near the boundary between Quebec and Maine. The river flows northeast to cross the northwest corner of Maine, then forms the boundary between Maine and New Brunswick. After entering New Brunswick, the river continues south for over 200 miles (320 kilometers) and empties into the Bay of Fundy.
The Saint John, often called the Rhine of America, is one of the most beautiful rivers in the Atlantic Provinces. Three miles (5 kilometers) after it enters New Brunswick, it plunges over Grand Falls, a drop of 75 feet (23 meters). It drops the same distance in the rapids that extend for nearly 1 mile (1.6 kilometers) below the falls. Small boats can travel about 260 miles (418 kilometers) up the Saint John. Near its mouth are the Reversing Falls of Saint John (see Reversing Falls of Saint John ).