The west side of Peak Mountain drains into Salmon Brook, then into the Farmington River, thence to the Connecticut River and Long Island Sound; the east side drains into the Connecticut River.
Peak Mountain is traversed by the Metacomet Trail, which extends from the Hanging Hills of Meriden, Connecticut to the Massachusetts border. The mountain is open to hiking, bird watching, snowshoeing and other passive pursuits. Views from the summit include the Barn Door Hills and Manitook Mountain.