The Metacomet Ridge continues west from Lamentation Mountain to become Cathole Mountain of the Hanging Hills; it continues south as Chauncey Peak. Another, lower extension continues north culminating in the uplands of Rocky Hill, Connecticut. The southern half of Lamentation Mountain drains into the Quinnipiac River, thence to Long Island Sound; the northern half to the Mattabesett River, then to the Connecticut River, thence to Long Island Sound.