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DRAGADOS is a world leader in the development of water- related projects, having built over 250 dams and Hydroelectric Power- Generation Plants all over the world, in fifteen countries in four continents.

The company is internationally renowned for the implementation of the latest specialized technologies in the construction of dam and water projects.

Through the years, the firm has contributed to the wellbeing of hundreds of communities around the world, vastly improving power production, water supply, irrigation, and flood-control systems, and fostering significant environmental improvements.

DRAGADOS has built dams of different types and materials. Vibrated concrete dams with projects of the following types: Gravity, Buttress, Arch Gravity and Double Arch; in the case of Roller-Compacted Concrete dams (RCC) we have examples in Gravity RCC and Arch Gravity RCC; and, in the case of Embankment dams we have experience in homogeneous dams, in Earthfill and Rockfill dams, in Asphalt- Faced Earthfill/Rockfill dams and Concrete- Faced Earthfill/Rockfill dams.

World map showing the countries where construction projects have been carried out (North America, Chile, Argentina, Colombia, Portugal and Spain among others)

DRAGADOS also has extensive experience in the construction of hydroelectric power plants, in addition to thermal and nuclear power plants, pumping stations, irrigation ponds and storm water tanks. It has built hundreds of kilometers of waterways including water tunnels and aqueducts, irrigation and water supply networks, sewage, cooling for power stations and pipelines.

We have also taken part in projects of Environmental improvement to watercourses and renovation of rivers in urban areas.

Examine the projects executed
Relevant Data
Gravity Dams: 90
Arch Dams: 23
Roller- Compacted Concrete Dams: 15
Embankment Dams: 72
Other types of Dams: 5
Hydroelectric Power Plants: 45

Most important projects per specialty

Aerial view of the dam showing the environmental setting in which it is located

Calaveras Dam- California, USA

The Calaveras Dam will be one of the largest dams built in the State of California within the last 30 years. It will replace the existing dam, which has been operating since 1925. The new dam will be 67 m high, with a length at crest of 370 m and ...
An aerial view of the construction of the dam, specifically the central part of the dam

Chironta Reservoir - Lluta Valley, Arica And Parinacota, Chile

The project “Chironta Reservoir, Lluta Valley, Arica and Parinacota Region” was developed by the Hydraulic Works Directorate of the Ministry of Public Works of the Republic of Chile. The reservoir is located in the N°4 Site, Chironta in Lluta Valley, 70 km northeast of Arica.
Aerial view of the hydroelectric dam evacuating water surrounded by hydroelectric posts in charge of transporting the energy

Ruskin Dam And Powerhouse Upgrades Project - Mission, British Columbia, Canada

British Columbia Hydro awarded a joint venture, of which Dragados was a part, the refurbishment project for the Ruskin Dam and Hydroelectric Station, located in Mission, British Columbia, 64 km from Vancouver.
An aerial view of the construction of the dam, specifically the central part of the dam

Portugues Dam - Puerto Rico, USA

The project included the construction of a roller-compacted concrete (RCC) thick-arch dam in the city of Ponce, in Puerto Rico. The dam is 67 m high and 375 m long at the crest; it features an integral ski-jump spillway, and has a volume of 290,00...