Carrapatelo Dam

Carrapatelo Dam is a concrete gravity dam on the Douro, where the river forms the border line between the districts of Porto and Viseu. It is located in the municipality Marco de Canaveses, in Porto District, Portugal.Construction of the dam began in 1964. The dam was completed in 1972. It is owned by Companhia Portuguesa de Produção de Electricidade .DamCarrapatelo Dam is a 57 m tall and 400 m long gravity dam with a crest altitude of 55 m. The volume of the dam is 190,000 m³. The spillway is part of the dam body . There is also a bottom outlet.ReservoirAt full reservoir level of 46.5 m the reservoir of the dam has a surface area of 9.52 km² and its total capacity is 148.4 mio. m³. The active capacity is 9 (15,6 or 16) mio. m³.Power plantThe run-of-the-river hydroelectric power plant went operational in 1971. It is owned by CPPE, but operated by EDP. The plant has a nameplate capacity of 201 (180) MW. Its average annual generation is 806.1 (783, 870.6 or 882) GWh.The power station contains 3 Kaplan turbine-generators with 63.4 MW each in a dam powerhouse. The turbine rotation is 115.4 rpm. The minimum hydraulic head is 20 m, the maximum 37 m. Maximum flow per turbine is 290 m³/s.