Alcántara Dam
| Alcántara Dam | |
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 Location of Alcántara Dam in Spain
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| Location | Alcántara, province of Cáceres, Extremadura, Spain |
| Coordinates | 39°43′48″N 6°53′05″W / 39.73000°N 6.88472°WCoordinates: 39°43′48″N 6°53′05″W / 39.73000°N 6.88472°W |
| Status | Operational |
| Opening date | 1969 |
| Dam and spillways | |
| Type of dam | Buttress |
| Height | 130 m (427 ft) |
| Length | 570 m (1,870 ft) |
| Dam volume | 956,000 m3 (1,250,401 cu yd) |
| Spillways | 2 |
| Spillway capacity | 8,000 m3/s (282,517 cu ft/s) |
| Reservoir | |
| Total capacity | 3,160,000,000 m3 (2,561,854 acre·ft) |
| Catchment area | 51,916 km2 (20,045 sq mi) |
| Power station | |
| Commission date | 1969-1970 |
| Turbines | 4 x 229 MW Francis-type |
| Installed capacity | 915 MW |
The Alcántara Dam, also known as the José María de Oriol Dam, is a buttress dam on the Tagus River near Alcántara in the province of Cáceres, Spain. It is named after the politician and captain of the Spanish electricity industry José María de Oriol y Urquijo. The dam regulates much of the flow of the Tagus River, the longest of the Iberian Peninsula. It was built in 1969 and is the second largest reservoir in Europe.
The Roman Alcántara Bridge is located 600 m downstream from the dam.
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