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Daivões Dam (Barragem de Daivões) is a concrete arch-gravity dam on the Tâmega River. It is located in the municipality Ribeira de Pena, in Vila Real District, Portugal and it is part of the wider Tâmega Electricity-Generating Group formed of 3 dams and 3 plants

Iberdrola signed a 70 year concession with the Government of Portugal in July 2014 for the design, construction and operation of three projects: Alto Tâmega, Daivões and Gouvães dams.

Construction of the dam completed in July 2022.

Dam
Daivões Dam is a 77.5 m tall, 264 m long dam.

Reservoir
The reservoir surface area for the dam has 1.76 km2.

Power plant
The generating unit of the dam consists of two 59MW Francis turbine units with a maximum flow rate of 220m³/s producing 159GWh of electricity a year. The spillways are located over the dam and consist of four radial gates with a width of 11.5m and height of 9m each with a maximum discharge capacities of 3,400m³/s.