Touvedo Dam

Touvedo Dam
Location of Touvedo Dam in Portugal
Official name	Barragem de Touvedo
Country	Portugal
Location	municipality Ponte da Barca e Arcos de Valdevez, Viana do Castelo District
Coordinates	41°48′44.9″N8°21′13.5″W / 41.812472°N 8.353750°W / 41.812472; -8.353750
Purpose	Power, irrigation, flood control
Status	Operational
Construction began	1987
Opening date	1993
Owner(s)	Companhia Portuguesa de Produção de Electricidade
Operator(s)	Energias de Portugal
Dam and spillways
Type of dam	Concrete gravity dam
Impounds	Limia
Height (foundation)	42.5 m (139 ft)
Length	133.5 m (438 ft)
Elevation at crest	55 m (180 ft)
Dam volume	74,620 m3 (2,635,000 cu ft)
Spillway type	Over the dam
Spillway capacity	3,200 m3/s (110,000 cu ft/s)
Reservoir
Total capacity	15,500,000 m3 (12,600 acre⋅ft)
Active capacity	4,500,000 m3 (3,600 acre⋅ft)
Surface area	1.72 km2 (0.66 sq mi)
Normal elevation	50 m (160 ft)
Operator(s)	Energias de Portugal
Commission date	1993
Hydraulic head	25 m (82 ft) (max)
Turbines	1 x 22.2 MW Kaplan-type
Installed capacity	22 MW
Annual generation	66.8 GWh

Touvedo Dam (Portuguese: Barragem de Touvedo) is a concrete gravity dam on the Limia. It is located in the municipality Ponte da Barca e Arcos de Valdevez, in Viana do Castelo District, Portugal.

Construction of the dam began in 1987. The dam was completed in 1993. It is owned by Companhia Portuguesa de Produção de Electricidade (CPPE). The dam is used for power generation, irrigation and flood control. ^[1]

Dam

Touvedo Dam is a 42.5 m tall (height above foundation) and 133.5 m long gravity dam with a crest altitude of 55 m. The volume of the dam is 74,620 m³. The spillway with 3 cradial gates is part of the dam body (maximum discharge 3,200 m³/s). There is also a bottom outlet which can discharge up to 50 m³/s. ^[1]

Reservoir

At full reservoir level of 50 m the reservoir of the dam has a surface area of 1.72 km² and a total capacity of 15.5 mio. m³. The active capacity is 4.5 (4.0) ^[2] mio. m³. Minimum operating level is 47.5 m. ^[1]

The reservoir of Touvedo Dam serves as lower reservoir for the Alto Lindoso pumped-storage power plant. ^{[3] [4]}

Power plant

The hydroelectric power plant was commissioned in 1993. ^[5] It is operated by EDP. The plant has a nameplate capacity of 22 ^{[1] [2] [3] [4] [5]} MW. Its average annual generation is 66.8 ^[5] (61, ^[2] 67, ^{[1] [4]} or 78 ^[3] ) GWh.

The power station contains one Kaplan turbine-generator with 22.2 MW (24 MVA) in a dam powerhouse located on the left side of the dam. The turbine rotation is 187.5 rpm. The minimum hydraulic head is 20 m, the maximum 25 m. Maximum flow per turbine is 100 m³/s. ^[5]

The turbine and generator were provided by GEC-Alstom. ^[4]

See also

• Portugal portal
• Water portal
• Renewable energy portal

• List of power stations in Portugal
• List of dams and reservoirs in Portugal

References

1. "TOUVEDO DAM". APA Barragens de Portugal. Retrieved 2015-03-13.
2. "Hidroelectricidade em Portugal memória e desafio" (PDF) (in Portuguese). Rede Eléctrica Nacional, S.A. p. 30 (28). Archived from the original (PDF) on 2021-06-27. Retrieved 2015-03-13.
3. "DECLARAÇÃO AMBIENTAL 2012" (PDF) (in Portuguese). Energias de Portugal. pp. 17–18 (15–16). Archived from the original (PDF) on 2014-11-03. Retrieved 2015-03-13.
4. "Touvedo Hydroelectric Power Plant Portugal". Global Energy Observatory. Retrieved 2015-02-13.
5. "Touvedo Informação Técnica" (in Portuguese). Energias de Portugal. Archived from the original on 2014-11-11. Retrieved 2015-03-13.

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