High Island or Leung Shuen Wan is a former island in the southeast of Sai Kung Peninsula, Hong Kong. The island was connected to the peninsula by two dams to enclose the Kwun Mun Channel and form the High Island Reservoir. The construction of the dam spanned 10 years from 1969 to 1979. The area is now a designated fish culture zone and features several seafood restaurants along the shore.