Friends of Sebago Lake
Features environmental concerns about the health of Sebago Lake and its watershed, especially its connection to Casco Bay and the Atlantic Ocean, the Presumpscot River. History of organization and the Sebago salmon available.
Tide Chart Index Southern Maine and Casco Bay
Individual monthly Tide Charts for harbors from South Harpswell to Kittery Point.
York County Audubon Society
A non-profit organization dedicated to the conservation of the environment and, through education, the nature around us.