Valeira Dam
{{Infobox dam
| name = Valeira Dam
| name_official = Barragem da Valeira
| image = Barragem da Valeira - Portugal (16766052934).jpg
| image_size =
| image_caption = Valeira Dam downstream of the curve that follows the exceptionally tight gorge of the Douro River, known as Cachão da Valeira
| image_alt =
| location_map = Portugal
| location_map_size =
| location_map_caption =
| location_map_alt =
| coordinates = {{coord|41|9|37.8|N|7|22|27.1|W|type:landmark_region:PT|display=inline,title}}
| country = Portugal
| location = municipality São João da Pesqueira, Viseu District
| purpose = Power
| status = O
| construction_began = 1971
| opening = 1975
| demolished =
| cost =
| owner = Companhia Portuguesa de Produção de Electricidade
| operator = Energias de Portugal
| dam_type = Concrete gravity dam
| dam_crosses = Douro
| dam_height =
| dam_height_foundation = {{convert|48|m|abbr=on}}
| dam_height_thalweg =
| dam_length = {{convert|380|m|abbr=on}}
| dam_elevation_crest = {{convert|113|m|abbr=on}}
| dam_width_crest = {{convert|6|m|abbr=on}}
| dam_width_base =
| dam_volume = {{Convert|220000|m3|abbr=on}}
| spillway_count =
| spillway_type = Dam body
| spillway_capacity = {{Convert|18000|m3/s|abbr=on}}
| res_name =
| res_capacity_total = {{convert|97000000|m3|acre.ft|abbr=on}}
| res_capacity_active = {{convert|8000000|m3|acre.ft|abbr=on}}
| res_capacity_inactive =
| res_catchment =
| res_surface = {{convert|7.95|km2|mi2|abbr=on}}
| res_max_length =
| res_max_width =
| res_max_depth =
| res_elevation = {{convert|105|m|abbr=on}}
| res_tidal_range =
| plant_name =
| plant_coordinates =
| plant_operator = Energias de Portugal
| plant_commission = 1976
| plant_decommission =
| plant_type =
| plant_hydraulic_head = {{convert|31.5|m|abbr=on}} (max)
| plant_turbines = 3 x 82.4 MW Kaplan-type
| plant_capacity = 240 MW
| plant_annual_gen = 610.7 GWh
| website =
| extra =
}}
Valeira Dam ({{langx|pt|Barragem da Valeira|links=no}}) is a concrete gravity dam on the Douro, where the river forms the border line between the districts of Viseu and Bragança. It is located in the municipality São João da Pesqueira, in Viseu District, Portugal.
Construction of the dam began in 1971. The dam was completed in 1975. It is owned by Companhia Portuguesa de Produção de Electricidade (CPPE).
Dam
Valeira Dam is a 48 m tall (height above foundation) and 380 m long gravity dam with a crest altitude of 113 m. The volume of the dam is 220,000 m3. The spillway with 5 radial gates is part of the dam body (maximum discharge 18,000 m3/s).
Reservoir
Power plant
File:Barragem da Valeira - Portugal (32351108773).jpg
The run-of-the-river hydroelectric power plant was commissioned in 1976 (1975). It is operated by EDP. The plant has a nameplate capacity of 240 (216) MW. Its average annual generation is 610.7 (663, 748 or 801) GWh.
The power station contains 3 Kaplan turbine-generators with 82.4 (72) MW (80 MVA) each in a dam powerhouse located on the right side of the dam. The turbine rotation is 115.4 rpm. The minimum hydraulic head is 15.5 m, the maximum 31.5 m. Maximum flow per turbine is 360 m3/s.
The turbines were provided by Kværner, the generators by Brown, Boveri & Cie.
Lock
On the left side of the dam is a lock, which can handle ships with the following maximum properties: 83 m in length, 11.40 m on the beam, 3.8 m load-draught and a cargo capacity of 2500 tons.
See also
{{stack|{{Portal|Portugal|Water|Renewable energy}}}}
References
{{reflist
| refs =
| title = VALEIRA DAM
| publisher = APA Barragens de Portugal
| url = http://cnpgb.apambiente.pt/gr_barragens/gbingles/FichasIng/ValeirafichaIng.htm
| accessdate = 2015-03-06
}}
|title = DECLARAÇÃO AMBIENTAL 2012
|publisher = Energias de Portugal
|url = http://www.a-nossa-energia.edp.pt/pdf/desempenho_ambiental/da_2012.pdf
|pages = 41 (39)
|language = pt
|accessdate = 2015-03-02
|archive-date = 2014-11-03
|archive-url = https://web.archive.org/web/20141103172532/http://www.a-nossa-energia.edp.pt/pdf/desempenho_ambiental/da_2012.pdf
|url-status = dead
}}
|title = Valeira Informação Técnica
|publisher = Energias de Portugal
|url = http://www.a-nossa-energia.edp.pt/centros_produtores/info_tecnica.php?item_id=57&cp_type=he§ion_type=info_tecnica
|language = pt
|accessdate = 2015-03-06
|archive-date = 2017-08-11
|archive-url = https://web.archive.org/web/20170811223218/http://www.a-nossa-energia.edp.pt/centros_produtores/info_tecnica.php?item_id=57&cp_type=he§ion_type=info_tecnica
|url-status = dead
}}
| title = Valeira Hydroelectric Power Plant Portugal
| publisher = Global Energy Observatory
| url = http://globalenergyobservatory.org/geoid/43540
| accessdate = 2015-03-06
}}
| title = waterway introduction
| publisher = Instituto Portuário e dos Transportes Marítimos
| url = http://www.douro.iptm.pt/EN/via_navegavel/index.aspx
| accessdate = 2015-02-11
}}
|title = Hidroelectricidade em Portugal memória e desafio
|publisher = Rede Eléctrica Nacional, S.A.
|url = http://www.centrodeinformacao.ren.pt/PT/publicacoes/PublicacoesGerais/Hidroelectricidade%20em%20Portugal%20-%20Mem%C3%B3ria%20e%20desafio.pdf
|page = 29 (27)
|language = pt
|accessdate = 2015-03-02
|archive-date = 2021-06-27
|archive-url = https://web.archive.org/web/20210627190712/https://www.centrodeinformacao.ren.pt/PT/publicacoes/PublicacoesGerais/Hidroelectricidade%20em%20Portugal%20-%20Mem%C3%B3ria%20e%20desafio.pdf
|url-status = dead
}}
}}
{{GeoGroupTemplate}}
{{Douro dams}}
{{DEFAULTSORT:Valeira Dam}}
Category:Hydroelectric power stations in Portugal
Category:Dams completed in 1975
Category:Energy infrastructure completed in 1975
Category:1975 establishments in Portugal
Category:Buildings and structures in Viseu District