There are only a few arch dams in the UK, such as Monar Dam in Scotland. Other dam types are generally built straight. A gravity dam is so-called because it relies on the weight of the dam resting ...

The 726-foot-high arch-gravity dam stretches 1,244 feet across the Black Canyon and was built over five years starting in 1931, helping provide water and hydroelectrical power to the West.

Detailed reports and notes complied over a 20-year period have been used to give an insight into the 245m high, 3300MW Ertan ...