Lake Success is a man-made reservoir located in Nassau County, New York. It was created in the 1930s by damming the Nassau County section of the Hempstead and Merrick waterways. The lake serves as a water supply for local communities and is surrounded by residential areas and parks. The lake covers approximately 1,000 acres and is a popular spot for recreational activities such as fishing, boating, and picnicking. It is also home to various wildlife, making it an important ecological area. The surrounding parks provide walking trails and scenic views for visitors to enjoy.