Alcántara Dam

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Alcántara Dam
Presa de Alcántara.jpg
Alcántara Dam is located in Spain
Alcántara Dam
Location of Alcántara Dam in Spain
Location Alcántara, province of Cáceres, Extremadura, Spain
Coordinates 39°43′48″N 6°53′05″W / 39.73000°N 6.88472°W / 39.73000; -6.88472Coordinates: 39°43′48″N 6°53′05″W / 39.73000°N 6.88472°W / 39.73000; -6.88472
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)
Total capacity 3,160,000,000 m3 (2,561,854 acre·ft)
Catchment area 51,916 km2 (20,045 sq mi)[1]
Power station
Commission date 1969-1970
Turbines 4 x 229 MW Francis-type
Installed capacity 915 MW[2]

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.[3][4]

The Roman Alcántara Bridge is located 600 m downstream from the dam.


  1. ^ "Jose Maria de Oriol (Alcantara II)" (in Spanish). Spanish Society of Reservoirs and Dams. Retrieved 31 August 2011. 
  2. ^ "The hydroelectric Jose Maria de Oriol, one of the greatest in Spain" (in Spanish). Iberdrola. Retrieved 31 August 2011. 
  3. ^ "Integrated Water Resources Management: STRIVER efforts to assess the current status and future possibilities in four river basins" (PDF). Retrieved 2014-02-04. 
  4. ^ ""Bulletin" - Striver". Retrieved 2014-02-04. 

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