Fronhas dam
| Fronhas dam | |||||
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| Coordinates | 40 ° 14 '44 " N , 8 ° 9' 51" W | ||||
| Data on the structure | |||||
| Construction time: | until 1985 | ||||
| Height above foundation level : | 62 m | ||||
| Height of the structure crown: | 140 m | ||||
| Building volume: | 103,000 m³ | ||||
| Crown length: | 250 m | ||||
| Data on the reservoir | |||||
| Altitude (at congestion destination ) | 134.1 m | ||||
| Water surface | 5.35 km² | ||||
| Storage space | 42.5 million m³ | ||||
| Total storage space : | 62.1 million m³ | ||||
The Fronhas dam ( Portuguese Barragem das Fronhas ) is located in the central region of Portugal in the Coimbra district . It dams the Alva , a left (southern) tributary of the Mondego to a reservoir (port. Albufeira da Barragem das Fronhas ). The municipality of São Martinho da Cortiça is located approximately three kilometers northeast of the dam.
The dam was completed in 1985. It is owned by INAG .
Barrier structure
The barrier structure is an arch dam with a height of 62 m above the foundation base . The crest of the dam is at a height of 140 m above sea level . The length of the top of the wall is 250 m. The volume of the dam is 103,000 m³.
The dam wall has a flood relief , through which a maximum of 500 m³ / s can be discharged.
Reservoir
With a normal storage target of 134.1 m (maximum 140 m at high water), the reservoir extends over an area of around 5.35 km² and holds 62.1 million m³ of water - 42.5 million m³ of this can be used. The minimum storage target is 117 m.
See also
Web links
Individual evidence
- ↑ a b c FRONHAS DAM. APA Barragens de Portugal, accessed December 21, 2014 .
- ↑ BARRAGEM DE FRONHAS. APA Barragens de Portugal, accessed January 6, 2015 (Portuguese).