11. It is by far the larger of only two gravity-arch dams in Russia. 12. The arch dam has a height of and length of. 13. For the case of arch dams , the term is changed to " pulvino ". 14. The 75-miles dam near Warwick, Australia, was possibly the world's first concrete arch dam . 15. Three pioneering arch dams were built around the British Empire in the early 19th century. 16. The dam is a 635-foot ( 194 m ) high concrete variable radius arch dam . 17. The arch dam design was chosen for the narrow, rocky gorge where it is located. 18. Gordon Dam is almost twice the height of the next highest arch dam , Tumut Pondage. 19. Approximately 48 arch dams have been built in Australia and only nine have double curvature. 20. The arch dam Vieux �mosson was completed in 1955.
