Andorinhas dam

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Andorinhas dam
location
Andorinhas dam (Portugal)
Andorinhas dam
Coordinates 41 ° 34 '8 "  N , 8 ° 11' 47"  W Coordinates: 41 ° 34 '8 "  N , 8 ° 11' 47"  W.
country PortugalPortugal Portugal
place Póvoa de Lanhoso county , Braga district
Waters Ave
Height upstream 185.7  m
power plant
owner HDN
Start of planning 1941
Start of operation 1945
technology
Bottleneck performance 8.8 megawatts
Standard work capacity 19 million kWh / year
Turbines Francis : 2
Others

The Andorinhas Dam or Travassos Dam ( Portuguese Barragem de Andorinhas or Travassos ) is located in the northern region of Portugal in the Braga district . It dams the river Ave to a reservoir (port. Albufeira da Barragem de Travassos ). The Guilhofrei dam is about five kilometers upstream . The municipality of Travassos is located slightly northwest of the Andorinha dam .

The project to build the dam began in 1941. The construction was completed in 1945. The dam is used to generate electricity. It is owned by the HDN .

Barrier structure

The barrier structure is a concrete gravity dam with a height of 25 m above the foundation level. The top of the wall is at a height of 191.2 m above sea level . The length of the wall crown is 103.5 m and its width 1.8 m. The volume of the structure is 12,000 m³.

The dam wall has both a bottom outlet and a flood relief . A maximum of 450 m³ / s can be discharged via the flood relief. The design flood is 450 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 185.7 m (maximum 189.1 m at high water), the associated reservoir extends over an area of ​​around 0.21 km² and holds 1.2 million m³ of water.

power plant

The Andorinhas power plant is one of the smaller hydropower plants in Portugal with an installed capacity of 8.8  MW . The average annual production is 19 million kWh . There are two Francis turbines in operation.

See also

Web links

Individual evidence

  1. a b c d e ANDORINHAS DAM. APA Barragens de Portugal, accessed November 5, 2014 .