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 (1,160,000 cu yd)
Normal elevation 165 m (541 ft)
Power station
Turbines 2 x 106.4 MW Francis-type, 1 x 9.66 MW
Installed capacity 223 MW
Annual generation 1,046 GWh/year.

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 m (325 ft) and length of 600 m (2,000 ft). The upstream vertical face arch radius is 525 m. The induced joints are spaced at 20 m 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 MPa. The composition of the high-paste RCC mix included:


  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.".