The Cross River Reservoir is a large water supply reservoir located in the northern part of Westchester County, New York. It was created in the 1940s by damming the Cross River, a tributary of the Croton River. The reservoir serves as a crucial source of drinking water for millions of residents in the New York City area. Spanning approximately 1,200 acres, the Cross River Reservoir is surrounded by scenic landscapes and offers recreational opportunities such as fishing and hiking. It is part of the larger Croton Watershed, which plays a vital role in maintaining the water quality and supply for the region.