Uatumã River

The Uatumã River is a river flowing through the state of Amazonas in the Manaus area of Brazil.A tributary of the Amazon and Rio Negro rivers, it is known for its extensive peacock population. [ [http://www.finefishing.com/1freshfish/aawhereto/centralsouthamerica/peabass.htm Fine fishing.com] ] .

During the wet season starting in December, water levels can rise some 25 to 40 feet. Water levels have been strongly affected by the building of the controversial Balbina Dam on the river in the mid to late 1980s to generate electricity. The hydroelectric dam generates an average of 112.2 MW of electricity from the river system and floods a total of 2360 km² of rainforest around the Uatumã river [cite web|author=Philip M. Fearnside|url=http://www.springerlink.com/content/l0504508pv1632u2/|title= Balbina Dam, Amazonas|publisher=Department of Ecology, National Institute for Research in the Amazon (INPA)|date=2006-08-26|accessdate=2007-12-04]

The Walker's Amazon Mission Organization is also known to work in the Uatama area from September to mid-December.

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