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Agriculture Near Sobradinho Lake, Brazil – May 19th, 2009

May 19th, 2009 Category: Image of the day, Lakes, Rivers

Sobradinho Lake, Brazil - May 11th, 2009

Sobradinho Lake, Brazil - May 11th, 2009

Sobradinho Lake lies in the São Francisco River Basin, in one of the most arid regions in Northeastern Brazil, within a land stretch categorized as the Lower-middle São Francisco, in the state of Pernambuco.

The dam, in its full capacity, consists of a lake of approximately 4,214 km2; 280 km in length, the width of which varies from 5 to 50 km, according to the Smithsonian Astrophysical Observatory. The dam storage capacity is that of 34.1 billion m3 of water.

Here, the lake appears  strikingly bright yellow-green due to sediments from the São Francisco River.

Being situated in a semi-arid region, the dam brought about significant development to local irrigated agriculture. Many fields can be seen east of the river in the full image.

The Caatinga ecosystem (xeric shrubland and thorn forest) has also, for that matter, undergone considerable changes. Stastical analysis of data collected before and after the filling of the lake showed that the dam has brought about considerable changes to regional meteorology, particularly concerning atmospheric humidity and wind speed.

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