high island, known in chinese as leung shuen wan island () is a former island in the southeast of sai kung peninsula, hong kong. leung shuen wan (), in the past, also referred to the bay that associated with the land area. the island was connected to the peninsula by two dams that enclosed the kwun mun channel (), thereby forming the high island reservoir. the dams were constructed between 1969 and 1979. the area is part of the sai kung east country park.