The Alto Tâmega Hydropower scheme, included in the global contract for the conception and design of the “Alto Tâmega, Daivões, Gouvães and Padroselos Hydropower Schemes”, has a vault of double curvature concrete dam, 106.5 m maximum height above the foundation and 334 m crowning development;
The Alto Tâmega Hydropower scheme comprises:
- Dam on the Tâmega river, in vault of double curvature concrete dam, with 106.5 m maximum height above the foundation and with 334 m crowning development;
- Water intake and hydraulic circuits;
- The dam is protected against over-topping by two spillways, separated from the dam body. The shaft, dia. 9,0m, and the auxiliary spillways, designed for maximum discharges of 1510 and 300 m³/s;
- Hydroelectric plant foot dam, with 2 groups, equipped for maximum flow of 200 m³/s and the maximum power 160 MW.