Groton State Forest features three state-designated natural areas, Peacham Bog Natural Area (748 acres), Tabletop Mountain Natural Area (129 acres) and Lords Hill Natural Area (25 acres) [REF].
There are eight lakes and ponds: Lake Groton (422 acres), Kettle Pond (109 acres), Martins Pond (82 acres), Turtlehead Pond or Marshfield Pond (69 acres), Noyes Pond (39 acres), Osmore Pond (48 acres), Peacham Pond (340 acres), and Ricker Pond (95 acres) [REF].