Eng Sérgio Motta Dam
Encyclopedia
The Engineer Sérgio Motta Dam, formerly known as the Porto Primavera Dam, is an embankment dam
on the Paraná River
near Rosana
in São Paulo
, Brazil. It was constructed between 1980 and 1999 for hydroelectric power production, flood control and navigation
. The dam is named for Sergio Roberto Vieira da Motta, a prominent industrial engineer in São Paulo. At 11.38 km (7.1 mi) in length, it is the longest dam in Brazil.
The 22 m (72.2 ft) tall dam creates a reservoir with a 19.9 km³ (4.8 cu mi) capacity and surface area of 2250 square kilometre.
The dam supports hydroelectric power plant on its southern end with an installed capacity of 1,540 MW. The power plant contains 14 x 110 MW Kaplan turbine
generators. Construction on the dam began in 1980 and the first filling of the reservoir to 253 m (830.1 ft) above sea level was complete by 1998. It was inaugurated in 1999 with the first three generators commissioned in March. In 2000, five more generators came online and by 2001, a total of ten were in operation. The second filling to 257 m (843.2 ft) above sea level was complete in March 2001 and by October 2003, all 14 generators were in operation. Although there are no plans to install them, the power plant has room to accommodate an additional four generators. The dam also supports a 210 m (689 ft) long and 17 m (55.8 ft) wide navigation lock on its southern end with the ability to transport 27 million tons a year.
In 2005, an infestation of Hydrilla verticillata was discovered in the reservoir, the first time the invasive weed was discovered in Brazil. The dam has also had negative effects on downstream fish reproduction and has a 520 m (1,706 ft) long fish ladder
.
Embankment dam
An embankment dam is a massive artificial water barrier. It is typically created by the emplacement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay and/or rock. It has a semi-permanent waterproof natural covering for its surface, and a dense, waterproof...
on the Paraná River
Paraná River
The Paraná River is a river in south Central South America, running through Brazil, Paraguay and Argentina for some . It is second in length only to the Amazon River among South American rivers. The name Paraná is an abbreviation of the phrase "para rehe onáva", which comes from the Tupi language...
near Rosana
Rosana, São Paulo
Rosana is a municipality in the state of São Paulo in Brazil. The population in 2008 was 19,428 and the area is 741.216 km². The elevation is 236 m. The city is the westernmost city in the state of São Paulo.- References :...
in São Paulo
São Paulo
São Paulo is the largest city in Brazil, the largest city in the southern hemisphere and South America, and the world's seventh largest city by population. The metropolis is anchor to the São Paulo metropolitan area, ranked as the second-most populous metropolitan area in the Americas and among...
, Brazil. It was constructed between 1980 and 1999 for hydroelectric power production, flood control and navigation
Navigability
A body of water, such as a river, canal or lake, is navigable if it is deep, wide and slow enough for a vessel to pass. Preferably there are few obstructions such as rocks or trees to avoid. Bridges must have sufficient clearance. High water speed may make a channel unnavigable. Waters may be...
. The dam is named for Sergio Roberto Vieira da Motta, a prominent industrial engineer in São Paulo. At 11.38 km (7.1 mi) in length, it is the longest dam in Brazil.
The 22 m (72.2 ft) tall dam creates a reservoir with a 19.9 km³ (4.8 cu mi) capacity and surface area of 2250 square kilometre.
The dam supports hydroelectric power plant on its southern end with an installed capacity of 1,540 MW. The power plant contains 14 x 110 MW Kaplan turbine
Kaplan turbine
The Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by the Austrian professor Viktor Kaplan, who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flow and...
generators. Construction on the dam began in 1980 and the first filling of the reservoir to 253 m (830.1 ft) above sea level was complete by 1998. It was inaugurated in 1999 with the first three generators commissioned in March. In 2000, five more generators came online and by 2001, a total of ten were in operation. The second filling to 257 m (843.2 ft) above sea level was complete in March 2001 and by October 2003, all 14 generators were in operation. Although there are no plans to install them, the power plant has room to accommodate an additional four generators. The dam also supports a 210 m (689 ft) long and 17 m (55.8 ft) wide navigation lock on its southern end with the ability to transport 27 million tons a year.
In 2005, an infestation of Hydrilla verticillata was discovered in the reservoir, the first time the invasive weed was discovered in Brazil. The dam has also had negative effects on downstream fish reproduction and has a 520 m (1,706 ft) long fish ladder
Fish ladder
A fish ladder, also known as a fishway, fish pass or fish steps, is a structure on or around artificial barriers to facilitate diadromous fishes' natural migration. Most fishways enable fish to pass around the barriers by swimming and leaping up a series of relatively low steps into the waters on...
.
See also
- Energy policy of BrazilEnergy policy of BrazilBrazil is the 10th largest energy consumer in the world and the largest in South America. At the same time, it is an important oil and gas producer in the region and the world's second largest ethanol fuel producer....
- Itaipu Dam
- Ilha Solteira DamIlha Solteira DamThe Ilha Solteira Dam is an embankment dam on the Paraná River near Ilha Solteira in São Paulo, Brazil. It was constructed between 1967 and 1973 for hydroelectric power production, flood control and navigation....
- List of power stations in Brazil