Management of water yield

The economic return from water on the Central Plateau far exceeds the return from other forms of land use. Water in Great Lake at an altitude of 1033m (3,390 feet) returns the H.E.C. an average of approximately $2 per acre inch (hectare em) which represents the income from power produced by the Poatina and Trevallyn turbines (Edwards 1968). The income to the State from the users of the power produced exceeds the income to the H.E.C. (the company tax paid by the bulk consumers of electricity is approximately equivalent to $2 per acre inch in Great Lake).