At 310 acres, Lake Sebago, near Sloatsburg, is the largest lake in Harriman State Park in the U.S. state of New York. The name is Algonquian for "big water". It is located just south of Lake Kanawauke
Arden Valley Road is an east-west parkway located in Southfields, New York, in the United States, that travels through Harriman State Park and is owned by the Palisades Interstate Park Commission. At
Arden Valley Road's eastern terminus at Tiorati Circle and Lake Tiorati.
Arden Valley Road crosses the New York State Thruway just east of its western terminus at NY 17.