Lake Peekskill is a reservoir located in the town of Putnam Valley in Putnam County, New York. The lake, which was originally called Lower Cranberry Pond before being dammed, was developed in the 1920s by McGolrick Co., with summer cottages sold to New York City residents. Now, most residents are year-round inhabitants. There are three private beaches on the lake: North Beach, Singers Beach and Carraras Beach.