Santa Clara dam
| Santa Clara dam | |||||
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| Coordinates | 37 ° 30 '51 " N , 8 ° 26' 32" W | ||||
| Data on the structure | |||||
| Construction time: | 1960 to 1968 | ||||
| Height above valley floor: | 83 m | ||||
| Height above foundation level : | 87 m | ||||
| Height of the structure crown: | 135 m | ||||
| Building volume: | 3.966 million m³ | ||||
| Crown length: | 428 m | ||||
| Crown width: | 10 m | ||||
| Data on the reservoir | |||||
| Altitude (at congestion destination ) | 130 m | ||||
| Water surface | 19.86 km² | ||||
| Storage space | 240.3 million m³ | ||||
| Total storage space : | 485 million m³ | ||||
| Design flood : | 2,000 m³ / s | ||||
The Santa Clara dam ( Portuguese Barragem de Santa Clara ) is located in the Alentejo region of Portugal in the Beja district . It dams the river Mira to a reservoir (Port. Albufeira da Barragem da Santa Clara ). About ten kilometers northwest of the dam is the small town of Odemira .
The project to build the dam began in 1960. The construction was completed in 1968. In addition to irrigation, the dam is also used for drinking water supply, electricity generation and flood protection. It is owned by the Associação de Beneficiários do Mira .
Barrier structure
The barrier structure is a dam with a height of 87 m above the foundation level (83 m above the river bed). The crest of the dam is at a height of 135 m above sea level . The length of the dam crest is 428 m and its width 10 m. The volume of the structure is 3.966 million m³.
The dam has both a bottom outlet and a flood relief . A maximum of 124 m³ / s can be discharged via the bottom outlet, and a maximum of 208 m³ / s via the flood discharge. The design flood is 2,000 m³ / s; the probability of this event occurring has been determined to be once in 1,000 years.
Reservoir
With a normal storage target of 130 m (maximum 132 m at high water), the reservoir extends over an area of around 19.86 km² and holds 485 million m³ of water - 240.3 million m³ of this can be used. The minimum storage target is 114.7 m.
power plant
The power plant is located away from the dam. The average annual production is 1.9 million kWh .
