Changuinola Dam

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Changuinola Dam
Changuinola Dam is located in Panama
Changuinola Dam
Location of Changuinola Dam
Official name Changuinola I Dam
Location Panama
Coordinates 9°14′11.63″N 82°29′41.13″W / 9.2365639°N 82.4947583°W / 9.2365639; -82.4947583Coordinates: 9°14′11.63″N 82°29′41.13″W / 9.2365639°N 82.4947583°W / 9.2365639; -82.4947583
Construction began 2007
Opening date 2011
Dam and spillways
Type of dam Arch-gravity, roller compacted concrete
Height 99.2 m (325 ft)
Length 600 m (2,000 ft)
Dam volume 890,000 m3 (31,000,000 cu ft)
Normal elevation 165 m (541 ft)
Power station
Turbines 2 x 106.4 MW (142,700 hp) Francis-type, 1 x 9.66 MW (12,950 hp)
Installed capacity 223 MW (299,000 hp)
Annual generation 1,046 GWh (3,770 TJ)

Changuinola I Dam, is located in district of Changuinola, in the Province of Bocas del Toro, in the western part of Panama. It is the largest roller-compacted concrete arch-gravity dam in the World.

Technical features[edit]

The design of the dam was conducted by Malcolm Dunstan & Associates engineering and construction company.[1]

The construction of the dam started on October 25, 2007 and its first generator was operational on November 19, 2011. The roller-compacted concrete arch-gravity dam has a maximum height of 99.2 metres (325 ft) and length of 600 metres (2,000 ft). The upstream vertical face arch radius is 525 metres (1,722 ft). The induced joints are spaced at 20 metres (66 ft) intervals, with inducers installed in every second layer after compaction. The downstream face slope varies form 0.5:1 (H:V) in the center and 0.7:1 (H:V) on the flanks.[2]

The RCC mix strength requirements were determined by a target direct tensile strength of 1.2 megapascals (170 psi). The composition of the high-paste RCC mix included:

See also[edit]


  1. ^ Erlendsson G., Cameron-Ellis D., Shaw Q., Dunstan M., The Development of the Design of Changuinola 1 Dam, Roller Compacted Concrete Dams, Symposium, Zaragoza, October 2012
  2. ^ "AES Changuinola S.A.".