Pomona Island is the largest island within Lake Manapouri, in Fiordland National Park, in New Zealand's South Island. With an area of 262 hectares (650 acres), it is the largest island to be found within any New Zealand lake. The island is uninhabited, and lies close to the entrance to the lake's southern arm, 11 kilometres to the west of Manapouri township. To its north, the island is separated from the mainland by the 500 metres (1,600 ft) wide Hurricane Passage. Pomona Island was named by surveyor James McKerrow in 1862 after the main island of Scotland's Orkney Islands.