Petit-Saut Dam

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Petit-Saut Dam
Guyane 95 berge barrage edf petit saut2.jpg
The reservoir in 1995
Petit-Saut Dam is located in French Guiana
Petit-Saut Dam
Location of Petit-Saut Dam in French Guiana
Country France
Location Sinnamary, French Guiana
Coordinates 5°3′45.39″N 53°2′51.28″W / 5.0626083°N 53.0475778°W / 5.0626083; -53.0475778Coordinates: 5°3′45.39″N 53°2′51.28″W / 5.0626083°N 53.0475778°W / 5.0626083; -53.0475778
Purpose Power
Status Operational
Construction began 1989
Opening date 1993; 24 years ago (1993)
Owner(s) Électricité de France
Dam and spillways
Type of dam Gravity, roller-compacted concrete
Impounds Sinnamary River
Height 48 m (157 ft)
Length 740 m (2,430 ft)
Dam volume 410,000 m3 (540,000 cu yd)
Creates Petit-Saut Lake
Total capacity 3,500,000,000 m3 (2,800,000 acre·ft)
Surface area 365 km2 (141 sq mi)
Commission date January 1994-1995
Turbines 4 x 29 MW Kaplan-type
Installed capacity 116 MW

The Petit-Saut Dam is a gravity dam on the Sinnamary River about 36 km (22 mi) south of Sinnamary in French Guiana. The primary purpose of the dam is to produce hydroelectric power and it supports a 116 MW power station. Construction on the dam and power station began in July 1989 and placement of concrete for the dam started in July 1992. The dam was complete in February 1993 and the first generator was operational in January 1994. The last went online in 1995.[1] It is owned by Électricité de France.[2] Construction of the dam and impounding of its large 3,500,000,000 m3 (2,800,000 acre·ft) reservoir led to several environmental issues that continue to be monitored and addressed. These issues include deforestation, greenhouse gases and water deoxidation.[3]


  1. ^ "RCC Dam Database (Petit Saut)". Malcolm Dunstan & Associates. Retrieved 31 March 2014. 
  2. ^ "Hydroelectric Plants in French Guiana & Suriname". IndustCards. Retrieved 31 March 2014. 
  3. ^ "PETIT SAUT Environmental report after 12 years running" (PDF). Comite Scientifique Petit-Saut. 2008. Retrieved 31 March 2014. 

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