| Alcántara Dam | |
| Location Map: | Spain |
| Coordinates: | 39.73°N -6.8847°W |
| Location: | Alcántara, province of Cáceres, Extremadura, Spain |
| Status: | O |
| Opening: | 1969 |
| Dam Type: | Buttress |
| Dam Height: | 1300NaN0 |
| Dam Length: | 5700NaN0 |
| Dam Volume: | 9560000NaN0 |
| Spillway Count: | 2 |
| Spillway Capacity: | 80000NaN0 |
| Res Capacity Total: | 31600000000NaN0 |
| Res Catchment: | 519160NaN0[1] |
| Plant Commission: | 1969-1970 |
| Plant Turbines: | 4 x 229 MW Francis-type |
| Plant 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.