Ossipee Lake is fed by multiple tributaries but has just one exit—the Ossipee River. While the Ossipee River dam is managed to maintain steady defined water levels year-round, heavy rains and rapid snow melt can sometimes result in flooding.
The Dam Bureau of the N.H. Department of Environmental Services maintains real-time information on Ossipee Lake’s water level and other data at Westward Shores and Ossipee River observation sites. Access it here.