La Vallee is a township in the Canadian province of Ontario, located within the Rainy River District. It stretches for 6 miles (9.7 km) along the north side of the Rainy River, with a depth of 15 miles (24 km), and consists of the geographic townships of Devlin, Burriss and Woodyatt. The township had a population of 988 in the Canada 2011 Census.