Arch of the Gordon Dam square format with curve.

OLYMPUS DIGITAL CAMERA Gordon Dam - Tasmania We drove for more than an hour to reach this dead end road to see this dam. The view of Lake Pedder is an added bonus. The Gordon Dam, also known as the Gordon River Dam, is a major gated double curvature concrete arch dam with a controlled spillway across the Gordon River, located in South West Tasmania, Australia. The impounded reservoir is called Lake Gordon. Address: Gordon River Rd, Strathgordon TAS 7139 Height: 140 m Capacity factor: 0.9 Abseiling down the concaved wall is a popular sport. Technically: The Gordon Dam wall, constructed with 154 thousand cubic metres (5.4×106 cu ft) of concrete, is 198 metres (650 ft) long and 140 metres (460 ft) high, making it the tallest dam in Tasmania and the fifth-tallest in Australia. At 100% capacity the dam wall holds back 12,359,040 megalitres (436,455×106 cu ft) of water; making Lake Gordon the largest lake in Australia.[4] The surface area of the lake is 27,800 hectares (69,000 acres) and the catchment area is 2,014 square kilometres (778 sq mi). The single controlled spillway is capable of discharging 175 cubic metres per second (6,200 cu ft/s). Approximately 48 arch dams have been built in Australia and only nine have double curvature. Gordon Dam is almost twice the height of the next highest arch dam, Tumut Pondage Source; Wikipedia. See the Video Tour here youtu.be/kgoKtWC7fEY