Açafal dam
| Açafal dam | |||||
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| Coordinates | 39 ° 41 ′ 16 ″ N , 7 ° 39 ′ 25 ″ W | ||||
| Data on the structure | |||||
| Construction time: | 1997 to 2004 | ||||
| Height above valley floor: | 26 m | ||||
| Height above foundation level : | 29 m | ||||
| Height of the structure crown: | 116 m | ||||
| Building volume: | 138,000 m³ | ||||
| Crown length: | 121 m | ||||
| Crown width: | 7.5 m | ||||
| Data on the reservoir | |||||
| Altitude (at congestion destination ) | 112.6 m | ||||
| Water surface | 0.2 km² | ||||
| Storage space | 1.79 million m³ | ||||
| Total storage space : | 1.79 million m³ | ||||
| Design flood : | 192 m³ / s | ||||
The Açafal dam ( Portuguese Barragem do Açafal ) is located in the Central Portugal region in the Castelo Branco district . It dams the Açafal , a right (northern) tributary of the Tejo, to a reservoir. The small town of Vila Velha de Ródão is about four kilometers south of the dam.
The project to build the dam started in 1997. The construction was completed in 2004. The dam is used for irrigation. It is owned by the Direcção Regional de Agricultura da Beira Interior (DRABI).
Barrier structure
The barrier structure consists of a dam with a height of 29 m above the foundation level (26 m above the river bed). The top of the dam is at a height of 116 m above sea level . The length of the dam crest is 121 m and its width 7.5 m. The volume of the dam is 138,000 m³.
The dam has both a bottom outlet and a flood relief . A maximum of 1.5 m³ / s can be discharged via the bottom outlet, and a maximum of 188 m³ / s via the flood discharge. The design flood is 192 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 112.6 m (maximum 114.75 m at high water), the reservoir extends over an area of around 0.22 km² and holds 1.79 million m³ of water, which can be fully used.
See also
Individual evidence
- ↑ a b c d AÇAFAL DAM. APA Barragens de Portugal, accessed December 19, 2014 .
- ↑ BARRAGEM DO AÇAFAL. APA Barragens de Portugal, accessed December 19, 2014 (Portuguese).