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Posts tagged Sobradinho Lake

Sobradinho Lake and Serra da Mesa Reservoir, Brazil

12.3S 46.3W

August 24th, 2011 Category: Lakes

Brazil - August 12th, 2011

This image of Brazil includes parts of the states of Bahia (right), Tocantins (upper left) and Goiás (lower left). Two large reservoirs can be seen: the bright green Sobradinho Lake (center right), in the state of Bahia, and the reservoir created by the Serra da Mesa Dam (lower left), in the state of Goiás.

Sobradinho Lake, fed by the São Francisco River,  covers a surface area of 4,225 km2, making it the largest by surface area in Brazil. It has a mean depth of 8.6 m and a maximum depth of 30 m.

The Serra da Mesa Dam, an embankment dam on the Tocantins River, creates the largest reservoir by volume in Brazil, with a capacity of 54,400,000,000 m3 (1.92×1012 cu ft) and surface area of 1,784 km2 (689 sq mi).

Golden and Green Sediments in Brazil’s Sobradinho Lake

9.8S 41.5W

May 10th, 2011 Category: Lakes

Brazil - May 1st, 2011

Sediments give the waters of Sobradinho Lake, in the Brazilian state of Bahia, golden and green hues. The lake is fed by the São Francisco River (visible on the left side of the full image).

The reservoir covers a surface area of 4,225 km2, making it the largest in Brazil. It has a mean depth of 8.6 m and a maximum depth of 30 m.

 

Sediments from São Francisco River in Sobradinho Lake, Brazil – April 29th, 2011

10.6S 42.8W

April 29th, 2011 Category: Image of the day, Lakes, Rivers, Sediments

Brazil - April 15th, 2011

Sediments from the São Francisco River give Sobradinho Lake coloring that changes from brown, to golden tan, to green. The lake is located in the northern part of the Brazilian state of Bahi.

Created by the construction of the Sobradinho Dam, the reservoir itself is the largest in Brazil, covering a surface area of 4,225 km2. It has a mean depth of 8.6 m and a maximum depth of 30 m.

Sobradinho Lake and São Francisco River, Brazil

9.4S 40.8W

May 5th, 2010 Category: Lakes, Rivers

Brazil - April 29th, 2010

Brazil - April 29th, 2010

This image of Brazil includes parts of the states of Bahia (right), Tocantins (upper left) and Goiás (lower left).  Sobradinho Lake can be seen in the northern part of Bahia.  Its southern reaches appear tan from sediments, while the northern part is green in color.

It was created by the construction of the Sobradinho Dam on the São Francisco River. The reservoir itself is the largest in Brazil, covering a surface area of 4,225 km2. It has a mean depth of 8.6 m and a maximum depth of 30 m.

Sobradinho Reservoir in Northern Bahia State, Brazil

December 28th, 2009 Category: Lakes, Rivers

Brazil - November 15th, 2009

Brazil - November 15th, 2009

Sobradinho Lake is located in the northern part of the Brazilian state of Bahia. Created by the Sobradinho Dam, it is the largest reservoir in Brazil in terms of surface area.

The dam was built in the hydrologic basin of the São Francisco River at a distance of 748 km from its source and 1,912 km from its estuary on the Atlantic coast. The power generation was started on 31 November 1979.

The reservoir covers an area of 4,225 km2 with mean depth of 8.6 m and a maximum depth of 30 m. At the maximum elevation of 392.5 m above sea level, the reservoir accumulates 34.1×109 m3 of water with a regulated discharge rate of 1,060 m3 sec-1.

The geological formation of the region consists of very ancient rocks of the Brazilian shield, igneous or highly metamorphosed and dating back to the Precambrian era. The soils are predominantly latosol, quartz sand and lithosol.

The climate is semi-arid, characterized by very high evaporation rate. Mean annual rainfall ranges between 400 mm and 800 mm and mean annual temperature of 26-27deg C is affected by the water body of the reservoir.

The prevailing vegetation consists of caranauba (a type of palm tree), hypoxerophilous and hyperxerophilous shrubs of medium height, and low shrubs. When the water level becomes low, wet areas around the reservoir are cultivated.