Uatumã River

Uatumã River
Uatumã River is located in
Uatumã River
Location of the mouth of the Uatumã River in the Amazon river watershed
Location
CountryBrazil
Physical characteristics
Source 
 • locationAmazonas, Brazil
MouthAmazon River
 • coordinates
2°24′55″S 57°34′38″W / 2.41528°S 57.57722°W / -2.41528; -57.57722
Length660 km (410 mi)[1]
Discharge 
 • average2,200 m3/s (78,000 cu ft/s)

The Uatumã River (sometimes spelled Uatamã) is a river flowing through the state of Amazonas in Brazil. It is a northern tributary of the Amazon River, and known for its extensive peacock bass population.[2] It is a blackwater river.

The river flows through the Uatuma-Trombetas moist forests ecoregion.[3] 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.[4]

From the point where the river emerges from the dam it defines the east boundary of the 374,700 hectares (926,000 acres) Caverna do Maroaga Environmental Protection Area, established in 1990.[5] The Uatumã Biological Reserve established in 1990 is a nature reserve around the river in the municipalities of São Sebastião do Uatumã and Itapiranga.[6] The 424,430 hectares (1,048,800 acres) Uatumã Sustainable Development Reserve protects the lower part of the Uatumã River basin.[7]

References

  1. ^ Ziesler, R.; Ardizzone, G.D. (1979). "Amazon River System". The Inland waters of Latin America. Food and Agriculture Organization of the United Nations. ISBN 92-5-000780-9. Archived from the original on 8 November 2014.
  2. ^ Fine fishing.com
  3. ^ Sears, Robin, Northern South America: Northeastern Brazil, into southern Guyana and Suriname (NT0173), WWF: World Wildlife Fund, retrieved 2017-03-31
  4. ^ Philip M. Fearnside (2006-08-26). "Balbina Dam, Amazonas". Department of Ecology, National Institute for Research in the Amazon (INPA). doi:10.1007/BF01867675. S2CID 154405904. {{cite journal}}: Cite journal requires |journal= (help)
  5. ^ APA Caverna do Maroaga (Presidente Figueiredo) (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-10-20
  6. ^ "Uatumã Biological Reserve". Instituto Nacional de Pesquisas da Amazônia - INPA. Retrieved 7 March 2012.
  7. ^ RDS do Uatumã (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-07-25


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