Willesley Lake is within the 155-acre park of the Former Willesley Hall. It is a serpentine design and was constructed as a fishing and boating lake and to allow the water level to be controlled for power generation for the Hall. It is designated as a ‘Site of Ecological Interest’, feeding into the River Mease (a special area of conservation and SSSI). The 24-acre fishing lake set in 16 acres of woodland provides an excellent fishery today, having a significant stock of fish species. It is surrounded by beds of snowdrops in February and bluebells in the spring. The lake attracts a significant number and species of waterfowl and other birds.