Caniçada Dam (Hydroelectric Dam of Cávado-Caniçada) | |
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Official name | Barragem da Caniçada/HICA-Hidroeléctrica do Cávado-Caniçada |
Location | Braga, Vieira do Minho, Parada do Bouro |
Coordinates | 41°39′10.8″N 8°13′51.6″W / 41.653000°N 8.231000°W |
Purpose | Power |
Status | Operational |
Opening date | 1955 |
Owner(s) | Companhia Portuguesa de Produção de Electricidade |
Dam and spillways | |
Type of dam | Concrete arch dam |
Impounds | Cávado River |
Height (foundation) | 76 m (249 ft) |
Length | 246 m (807 ft) |
Elevation at crest | 163 m (535 ft) |
Dam volume | 90,000 m3 (3,200,000 cu ft) |
Spillway type | Over the dam |
Spillway capacity | 1,700 m3/s (1.4 acre⋅ft/s) |
Reservoir | |
Total capacity | 170,600,000 m3 (138,300 acre⋅ft) |
Active capacity | 159,300,000 m3 (129,100 acre⋅ft) |
Surface area | 6.89 km2 (2.66 sq mi) |
Normal elevation | 162 m (531 ft) |
Operator(s) | Energias de Portugal |
Commission date | 1954 |
Hydraulic head | 121 m (397 ft) (max) |
Turbines | 2 x 31 MW Francis-type |
Installed capacity | 62 MW |
Annual generation | 337.4 GWh |
The Caniçada Dam (Portuguese: Barragem da Caniçada/HICA-Hidroeléctrica do Cávado-Caniçada; Portuguese pronunciation: [bɐˈʁaʒɐ̃j dɐ kɐniˈsaðɐ]) is a concrete arch dam on the Cávado River, the civil parish of Parada do Bouro, in the municipality of Vieira do Minho, in the Portuguese Norte ( district of Braga). It is owned by Companhia Portuguesa de Produção de Electricidade (CPPE). [1]
The dam was completed and began functioning in 1955. [2]
In 196, approval was obtained to begin a program of observation of the dam, as proposed by the Laboratório Nacional de Engenharia Civil (Civil Engineering National Laboratory). [2]
Caniçada Dam is a 76 metres (249 ft) tall (height above foundation) and 246 metres (807 ft) long arch dam with a crest altitude of 163 metres (535 ft). The volume of the dam is 90,000 cubic metres (3,200,000 cu ft). [2] The dam features a spillway with 4 gates over the dam with a maximum discharge 1,700 cubic metres per cubic foot (2,100,000 cu ft/m3) per second, and one bottom outlet with maximum discharge 142 cubic metres (5,000 cu ft) per second. [2] [1]
At full reservoir level of 163 metres (535 ft) the reservoir of the dam has a surface area of 783 square kilometres (302 sq mi) of 6.89 (5.78) [3] km2 and a total capacity of 170.6 mio. m³; its active capacity is 159.3 (144,4) [4] mio. m³. [1] With the 144,4 mio. m³ water 32 GWh can be produced. [4]
The hydroelectric power plant went operational in 1954. It is operated by EDP. The plant has a nameplate capacity of 62 [3] [4] (60 [5] [6] or 100 [7]) MW. Its average annual generation is 337.4 [4] (283, [6] 345 [3] or 346 [1] [5]) GWh. The power station contains 2 Francis turbine-generators with 31 MW (34 MVA) each in an underground powerhouse 134 [5] m below the surface. The turbine rotation is 300 rpm. The minimum hydraulic head is 77 m, the maximum 121 m. Maximum flow per turbine is 34 m³/s. [4] The turbines and generators were provided by Voith. [5]