Question: Lake Arrowhead is an artificial lake in the towns of Waterboro and Limerick, in the state of Maine, the lake is an impoundment on the Little Ossipee River, which flows northeast to the Saco River in Limington, a town in which county, Maine, United States?
Sentence (from "Little River (Ossipee River)"): Via the Ossipee River, it is part of the Saco River watershed, flowing to the Atlantic Ocean.
Relevant evidence: No