The Amawalk Reservoir is a small reservoir in central-northern Westchester County, New York. It is located at the intersection of U.S. Route 202 and New York State Route 35 in the town of Somers, and is over 32 miles (over 51 kilometres) north of New York City. It was formed by impounding the middle of the Muscoot River, one of the tributaries of the Croton River.