Monomonac
Lake Monomonac is an artificial lake that straddles the border between Rindge, New Hampshire and Winchendon, Massachusetts. It was created from a small pond in New Hampshire by the construction of dams on the North Branch of the Millers River, a part of the Connecticut Riverwatershed.
Lake Monomonac is 594 acres (2.4 km²) in size with 410 acres (1.7 km²) in New Hampshire and the remaining 184 acres (0.7 km²) in Massachusetts[1]. The lake has a maximum recorded depth of twenty-five feet and an average depth of ten feet.