Tucuruí Dam
The Tucuruí Dam (Tucuruí means "grasshopper's water", translated from Tupí language; Portuguese: Tucuruí) is a concrete gravity dam on the Tocantins River located on the Tucuruí County in the State of Pará, Brazil. The main purpose of the dam is hydroelectric power production and navigation. It is the first large-scale hydroelectric project in the Brazilian Amazon rainforest. The installed capacity of the 25-unit plant is 8,370 megawatts (11,220,000 hp). Phase I construction began in 1980 and ended in 1984 while Phase II began in 1998 and ended in 2010. The dam was featured in the 1985 film The Emerald Forest.
| Tucuruí Dam | |
|---|---|
Location of Tucuruí Dam in Brazil | |
| Official name | Usina Hidrelétrica de Tucuruí |
| Location | Tucuruí, Pará, Brazil |
| Coordinates | 03°49′54″S 49°38′48″W |
| Construction began | 1975 |
| Opening date | 1984 |
| Construction cost | $5.5 billion, $7.5 with accrued interest |
| Operator(s) | Eletronorte |
| Dam and spillways | |
| Type of dam | Concrete gravity |
| Impounds | Tocantins River |
| Height | 78 m (256 ft) |
| Length | 12.5 km (7.8 mi) Main dam:6.9 km (4 mi) |
| Spillway type | Service, Creager-type, gate-controlled |
| Spillway capacity | 110,000 m3/s (3,900,000 cu ft/s) |
| Reservoir | |
| Creates | Lago Tucuruí |
| Total capacity | 45 km3 (36,000,000 acre⋅ft) |
| Catchment area | 758,000 km2 (293,000 sq mi) |
| Surface area | 2,850 km2 (1,100 sq mi) |
| Maximum water depth | 72 m (236 ft) |
| Power Station | |
| Turbines | 25 12 x 350 MW (470,000 hp) 11 x 375 MW (503,000 hp) 2 x 22.5 MW (30,200 hp) |
| Installed capacity | 8,370 MW (11,220,000 hp) |
| Annual generation | 21.4 TWh (77 PJ) |
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