Chadwick Lake is a reservoir supplying water to the Town of Newburgh, in Orange County, New York, United States, in which it is located. It is a man made lake created in 1926 on private property owned by the Chadwick family by damming Quassaick Creek. It was maintained for recreational purposes for 36 years. In 1962, it was purchased by the Town of Newburgh as a reservoir to supply the Town with water. In more recent years, its use as a water supply has been supplanted by the Delaware Aqueduct and so Chadwick Lake has reverted to its original function of a recreational facility. It is located immediately to the northwest of the junction of NY 32 and 300 in the Cronomer Valley section of the town.