Lake Sayama (Yamaguchi Reservoir)
A lake located in Shorakuji, Tokorozawa City. This artificial lake was created by drawing water from the Tama River to serve as a source of water for Tokyo. The surrounding area is maintained as Sayama Prefectural Nature Park and visitors can enjoy the area's seasonal, natural beauty, including spring cherry blossoms and fall foliage; the park is also a wintering destination for water birds. In addition, there's the Sayama Lake Sports Ground.