Fishers island, although belonging to New York state, is situated off the coast of the eastern portion of Connecticut, the western end being 7 miles southeast of New London and the east extremity within 2 miles of Napatree point, at the extreme southwest corner of Rhode Island (figure 1).
The island is a little less than 7 miles in length and has an average width of somewhat over half a mile, although near Clay point and west of West harbor its width is upward of a mile (figure 2). It lies in the prolongation of the structural axis of Orient point, Long island, which axis, after passing through Plum and Fishers islands, is recognized along the ridge extending eastward from Watch hill, Rhode Island. Its position is masked throughout by a mantle of drift of the inner Wisconsin moraine. The island has the general sinuosity of . . .