Ashokan Reservoir (əshō`kən), 13 sq mi (34 sq km), SE N.Y., completed 1912. It is supplied by the Esopus and Schoharie watersheds and provides part of New York City's water supply. Water is carried to the city via the 92-mi-long (148-km) Catskill Aqueduct. Completed in 1917, the aqueduct delivers water to Kensico Reservoir near White Plains and Hillview Reservoir in Yonkers, from where it is distributed to parts of New York City through tunnels cut in solid rock. The aqueduct passes 1,114 ft (340 m) under the Hudson River at Storm King Mt. A steel pipe under the Narrows of New York Bay carries water to Silver Lake, Staten Island, 120 mi (193 km) from Ashokan Reservoir.