Miena is a small town at the southern end of the Great Lake in the Central Highlands of Tasmania, Australia. At the 2021 census, Miena and th…Miena is a small town at the southern end of the Great Lake in the Central Highlands of Tasmania, Australia. At the 2021 census, Miena and the surrounding area had a population of 127. Accommodation around Miena includes lakeside hotels, self-contained lodges and numerous shacks. Miena is well known for lake fishing and its hydro-electric dam.