Porce III Dam

Porce III Dam

Location of Porce III Dam in Colombia

Official name
Presa Porce III

Country
Colombia

Coordinates
6°56′19″N 75°8′19″W / 6.93861°N 75.13861°W / 6.93861; -75.13861Coordinates: 6°56′19″N 75°8′19″W / 6.93861°N 75.13861°W / 6.93861; -75.13861

Status
Operational

Construction began
2004

Opening date
2011

Owner(s)
Empresas Publicas de Medellin (EPM)

Dam and spillways

Type of dam
Embankment, concrete-face rock-fill

Impounds
Porce River

Height
151 m (495 ft)

Length
426 m (1,398 ft)

Width (crest)
8 m (26 ft)

Width (base)
400 m (1,300 ft)

Dam volume
4,155,000 m3 (146,700,000 cu ft)

Spillway capacity
10,850 m3/s (383,000 cu ft/s)

Reservoir

Total capacity
170×10^6 m3 (140,000 acre·ft)

Active capacity
127×10^6 m3 (103,000 acre·ft)

Catchment area
3,756 km2 (1,450 sq mi)

Surface area
4.6 km2 (1.8 sq mi)

Power station

Operator(s)
EPM

Commission date
2010-2011

Turbines
4 x 172 MW (231,000 hp) Francis-type

Installed capacity
660 MW (890,000 hp)

Annual generation
3,106 GWh (11,180 TJ)[1]

The Porce III Dam is an embankment dam on the Porce River 90 kilometres (56 mi) northeast of Medellín in Antioquia Department, Colombia. The dam was constructed between 2004 and 2011 for the primary purpose of hydroelectric power generation.

Contents

1 Background
2 Design and operation
3 See also
4 References

Background[edit]
Between 1974 and 1976, hydrological studies were carried out on the Porce River and between 1982 and 1983, studies regarding the river’s hydroelectric development were completed. The study recommended the five projects, Porce I, Porce II, Porce III, Porce IV and Ermitaño. In December 1984, the feasibility report for Porce III was submitted and complementary studies were carried out between 1986 and 1996. In 2002, the design and consultancy contracts were awarded along with the environmental license issued.[2] In 2004, construction on the dam began and the river was diverted by 2007. By 2010, the dam began to impound the reservoir and was complete by 2010. Between 2011, all four generators were commissioned.[3]
Design and operation[edit]
The Porce III Dam is a 151 metres (495 ft) tall and 426 metres (1,
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