Assawompset Pond is a reservoir/pond within the towns of Lakeville and Middleboro, in southeastern Massachusetts. It shares its waters with Long Pond and is openly connected with Pocksha Pond. These lakes provide a source of drinking water to the city of New Bedford, the largest city in southeastern Massachusetts. At almost four square miles (10 km2), it is the largest natural lake in Massachusetts. The pond was dammed in 1894 at the Nemasket River, which raised the water level about five feet (1.5 m). * Assawomsett Pond in Lakeville