| Entrepeñas Reservoir | |
| Name Official: | Embalse de Entrepeñas |
| Image Alt: | View of Entrepeñas Reservoir |
| Location Map: | Spain Castilla-La Mancha#Spain |
| Location Map Size: | 300 |
| Location Map Caption: | Location of Entrepeñas Reservoir in Castilla-La Mancha##Location of Entrepeñas Reservoir in Spain |
| Location Map Alt: | Location of Entrepeñas Reservoir in the Province of Guadalajara |
| Coordinates: | 40.4939°N -2.7489°W |
| Country: | Spain |
| Location: | Province of Guadalajara |
| Purpose: | Irrigation, power, transfer |
| Status: | O |
| Opening: | 1956 |
| Owner: | Government of Spain |
| Dam Type: | G |
| Dam Crosses: | Tagus River |
| Dam Height Foundation: | 87m (285feet) |
| Dam Length: | 383m (1,257feet) |
| Dam Elevation Crest: | 723m (2,372feet) |
| Dam Volume: | 445930000m2 |
| Spillway Count: | 1 |
| Spillway Capacity: | 1500m3/s |
| Res Capacity Total: | 835000000abbr=onNaNabbr=on |
| Res Catchment: | 4060km2 |
| Res Surface: | 3213abbr=onNaNabbr=on |
| Plant Name: | Central Hidroeléctrica de Entrepeñas |
| Plant Capacity: | 37 MW[1] |
| Website: | Association of Dams and Reservoirs |
Entrepeñas is a reservoir located on the Tagus River in the Alcarria Baja region of Guadalajara, Spain. It was completed in 1956.[2]
Apart from the Tagus, it also receives water from the Valdetrigo, Barranco Grande, Solana, and Ompólveda rivers, among others. The dam structure is situated next to the town of Entrepeñas, from which it took its name, between the municipal districts of Sacedón and Auñón.
The towns of Auñón, Durón, Pareja, and Sacedón are located on the banks of the reservoir, as are the residential areas of Las Anclas, Las Brisas, Peñalagos, and El Paraiso. Entrepeñas forms part of the so-called Sea of Castile (Spanish: Mar de Castilla), together with the reservoirs of Buendía, Bolarque, Zorita, Almoguera, and Estremera.
The surface area of the reservoir measures 3213ha, and it can hold a total of 835000000m2.[3]
In conjunction with the Buendía Reservoir, it supplies the Tagus-Segura Water Transfer.
List of dams and reservoirs in Spain