The Catskill Park is in the Catskill Mountains in New York in the United States. It consists of 700,000 acres (280,000 ha; 2,800 km²) of land inside a Blue Line in four counties: Delaware, Greene, Sullivan, and Ulster County. As of 2005, 287,500 acres (116,300 ha) or 41 percent of the land within, is owned by the state as part of the Forest Preserve; it is managed by the Department of Environmental Conservation (DEC). Another 5% is owned by New York City to protect four of the city's reservoirs in the region that lie partially within the park and their respective watersheds.