semienclosed arm of the North Atlantic Ocean, lying between the New York�Connect.... mile east

Covering 1,180 square miles (3,056 square km), it is 90 miles (145 km) long and 320 miles (532 km) wide and is limited on the east by Orient Point (Long Island) and Plum, Gull, and Fishers islands and on the west by the narrow Throgs Neck, which leads into Upper New York Bay via the East River. Two glacial advances have deepened the sound's water to more than 100 feet (30 m); near its eastern limits it reaches a maximum depth of 330 feet (100 m). mile east