| Los Caracoles Dam | |
| Location Map: | Argentina |
| Coordinates: | -31.5191°N -68.9818°W |
| Country: | Argentina |
| Location: | San Juan, San Juan Province |
| Purpose: | Irrigation, power |
| Status: | O |
| Construction Began: | 2004 |
| Owner: | Energia Provincial Sociedad del Estado SA |
| Dam Type: | Embankment, concrete-face rock-fill |
| Dam Crosses: | San Juan River |
| Dam Length: | 605m (1,985feet) |
| Dam Height: | 136m (446feet) |
| Res Capacity Total: | 565000000m2 |
| Res Surface: | 13km2 |
| Res Max Length: | 13km (08miles) |
| Plant Commission: | 2009 |
| Plant Turbines: | 2 x 63MW Francis-type |
| Plant Hydraulic Head: | 150m (490feet) |
| Plant Capacity: | 126MW |
The Lost Caracoles Dam, or Caracoles Dam is a concrete-face rock-fill dam on the San Juan River about west of San Juan in San Juan Province, Argentina. The purpose of the dam is to provide water for irrigation and the generation of hydroelectric power. The 136m (446feet) tall dam supports a power station and together with the Punta Negra Dam downstream, it provides for the irrigation of . Construction began in 2004 and the dam and power station were completed in 2009.[1] [2]