Alijó dam
| Alijó dam | |||||
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| Coordinates | 41 ° 18 ′ 31 ″ N , 7 ° 29 ′ 29 ″ W | ||||
| Data on the structure | |||||
| Construction time: | 1985 to 1991 | ||||
| Height above valley floor: | 36 m | ||||
| Height above foundation level : | 40 m | ||||
| Height of the structure crown: | 660.9 m | ||||
| Building volume: | 352,400 m³ | ||||
| Crown length: | 167 m | ||||
| Crown width: | 6 m | ||||
| Data on the reservoir | |||||
| Altitude (at congestion destination ) | 658.5 m | ||||
| Water surface | 0.18 km² | ||||
| Storage space | 1.59 million m³ | ||||
| Total storage space : | 1.74 million m³ | ||||
| Design flood : | 72 m³ / s | ||||
The Alijó dam ( Portuguese Barragem de Alijó or Barragem de Vila Chã ) is located in the northern region of Portugal in the Vila Real district . It dams the Chã , a right (northern) tributary of the Douro, to a reservoir (port. Albufeira da Barragem de Vila Chã ). The municipality of Vila Chã is about 1.5 km north of the dam, the small town of Alijó about 3 km southeast.
The project to build the dam began in 1985. The construction was completed in 1991. The dam is used to supply drinking water. It is owned by INAG .
Barrier structure
The barrier structure is a dam with a height of 40 m above the foundation level (36 m above the river bed). The crest of the dam is at a height of 660.9 m above sea level . The length of the dam crest is 167 m and its width 6 m. The volume of the dam is 352,400 m³.
The dam has both a bottom outlet and a flood relief . A maximum of 2.5 m³ / s can be discharged via the bottom outlet, and a maximum of 52 m³ / s via the flood discharge. The design flood is 72 m³ / s; the probability of this event occurring has been determined to be once in 1,000 years.
Reservoir
With the normal storage target of 658.5 m (maximum 659.9 m at high water), the reservoir extends over an area of around 0.18 km² and holds 1.74 million m³ of water - of which 1.59 million m³ can be used . The minimum congestion destination is 640 m.
See also
Individual evidence
- ↑ a b c d ALIJÓ DAM. APA Barragens de Portugal, accessed December 27, 2014 .