Alalaú River

	Alalaú River Alalaú River is a river forming part of the border between the Amazonas and Roraima states in north-western Brazil, a tributary of the Jauaperi River. The river basin is in the Waimiri Atroari Indigenous Territory. Tailings of processed tin ore from the Pitinga mine are held in holding ponds as a reserve that may be further processed if justified by a rise in the price of tin. In 1987 the dykes of four ponds broke. The sediment was released into the Alalaú River, and the pollution affected the fish downstream in the Waimiri-Atroari Indian Reserve. The Indians reported that the polluted water had made them ill. See also * List of rivers of Amazonas List of rivers of Roraima List of rivers in Roraima (Brazilian State). The list is arranged by drainage basin, with respective tributaries indented under each larger stream's name and ordered from downstream to upstream. Roraima is located entirely within the Amazon Bas ... References Sources * * Rivers of Amazonas (Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Jauaperi River The Jauaperi River ( pt, Rio Jauaperi) is a river of Amazonas state in northwestern Brazil, a tributary of the Rio Negro. The lower section of the river forms part of the border between Amazonas and Roraima. Most of the river basin is in the Waimiri Atroari Indigenous Territory The Waimiri Atroari Indigenous Territory ( pt, Terra Indígena Waimiri Atroari) is an indigenous territory in the states of Amazonas and Roraima, Brazil. There has been a long history of violent conflict between the indigenous Waimiri-Atroari peo .... See also * List of rivers of Amazonas References Sources * * Rivers of Amazonas (Brazilian state) Tributaries of the Rio Negro (Amazon) {{AmazonasBR-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Amazonas (Brazilian State) Amazonas () is a state of Brazil, located in the North Region in the northwestern corner of the country. It is the largest Brazilian state by area and the 9th largest country subdivision in the world, and the largest in South America, being greater than the areas of Uruguay, Paraguay, and Chile combined. Mostly located in the Southern Hemisphere, it is the third largest country subdivision in the Southern Hemisphere after the Australian states of Western Australia and Queensland. Entirely in the Western Hemisphere, it is the fourth largest in the Western Hemisphere after Greenland, Nunavut and Alaska. It would be the sixteenth largest country in land area, slightly larger than Mongolia. Neighbouring states are (from the north clockwise) Roraima, Pará, Mato Grosso, Rondônia, and Acre. It also borders the nations of Peru, Colombia and Venezuela. This includes the Departments of Amazonas, Vaupés and Guainía in Colombia, as well as the Amazonas state in Venezuela, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Roraima Roraima (, ) is one of the 26 states of Brazil. Located in the country's North Region, it is the northernmost and most geographically and logistically isolated state in Brazil. It is bordered by the state of Pará to the southeast, Amazonas to the south and west, Venezuela to the north and northwest, and Guyana to the east. The state covers an area of approximately , slightly larger than Belarus, being the fourteenth largest Brazilian state by area. The city of Boa Vista is the capital and largest city in the state, and is the only capital in the country located entirely in the Northern Hemisphere. Antônio Denarium, a member of the conservative Progressistas party, has been the governor of the state since 2019. Roraima is the least populous state in Brazil, with an estimated population of 631,181 inhabitants as of 2020. It is also the state with the lowest population density in Brazil, with 2.01 inhabitants per square kilometre. Its economy, based mainly on the tertia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 States of Brazil, states and the Federal District (Brazil), Federal District. It is the largest country to have Portuguese language, Portuguese as an List of territorial entities where Portuguese is an official language, official language and the only one in the Americas; one of the most Multiculturalism, multicultural and ethnically diverse nations, due to over a century of mass Immigration to Brazil, immigration from around the world; and the most populous Catholic Church by country, Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Waimiri Atroari Indigenous Territory The Waimiri Atroari Indigenous Territory ( pt, Terra Indígena Waimiri Atroari) is an indigenous territory in the states of Amazonas and Roraima, Brazil. There has been a long history of violent conflict between the indigenous Waimiri-Atroari people and newcomers from other parts of Brazil. Since the 1960s there have been many efforts to "civilise" the Waimiri-Atroari to avoid problems with the BR-174 highway, which cuts across the territory, and with tin mines and the huge Balbina Dam. The territory is now considerably smaller, but there have been improvements in living standards. Location The territory has an area of , divided between the states of Amazonas and Roraima. It lies to the northwest of the massive reservoir of the Balbina Dam and to the east of the Rio Negro. The reserve contains the basins of the Jauaperi and Camanaú rivers and their tributaries, the Alalaú, Curiaú, Pardo and Santo Antonio do Abonari rivers. The BR-174 federal highway from Manaus to Boa Vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pitinga Mine The Pitinga mine is an open pit tin mine in Brazil. It is thought to have the largest undeveloped tin deposit in the world. A complete community of 5,000 people was established in the remote location in the Amazon rainforest to support the mining operations, which began in 1982. There have been accidents, but efforts have been made to minimise environmental damage and to restore areas that have been mined. As of 2014 the more accessible alluvial deposits had been exhausted, but mining of primary rock was continuing. Discovery In 1976 the Brazilian Geological Survey detected deposits of cassiterite (tin ore) to the east of the Uaimiri Atroari Indigenous Reservation. Geologists of Brazilian Geological Survey, found traces of cassiterite in 1976 in tributaries of the Pitinga River that is outside the Indian reserve. The ore was reported to assay 2.1 kg/m3, much higher than typical deposits in Rondônia to the southwest. Paranapanema, assisted by Funai and the National Departme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	List Of Rivers Of Amazonas (Brazilian State) List of rivers in Amazonas (Brazilian State). The list is arranged by drainage basin, with respective tributaries indented under each larger stream's name and ordered from downstream to upstream. Amazonas is located entirely within the Amazon Basin. By Drainage Basin * Amazon River (includes Solimões) Tapajós River * Juruena River ** Bararati River Nhamundá River * Piratucu River Mamuru River * Uaicurapa River Andirá River Paraná Urariá (Amazon and Madeira side channel) * Maués Açu River ** Urupadi River Amanã River Paracori River Parauari River * Apoquitaua River * Paraconi River * Abacaxis River ** Marimari River * Canumã River ** Mapiá Grande River Acari River Camaiú River Sucunduri River Uatumã River * Jatapu River Capucapu River * Pitinga River Urubu River Madeira River * Prêto do Igapó-Açu River Autaz-mirim River Tupana River Matupiri River ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
	List Of Rivers Of Roraima List of rivers in Roraima (Brazilian State). The list is arranged by drainage basin, with respective tributaries indented under each larger stream's name and ordered from downstream to upstream. Roraima is located entirely within the Amazon Basin, most of the state is within the Branco River sub-watershed. By Drainage Basin * ''Amazon River'' (Pará, Amazonas) ''Uatumã River'' (Amazonas) * Jatapu River Rio Negro * Jauaperi River ** Macucuaú River Alalaú River Branquinho River Trairi River * Branco River ** Xeriuini River * Novo River Itapará River Catrimani River * Pacu River * Arapari River * Jundiá River * Lôbo d'Almada River Água Boa do Univini River * Capivara River Anauá River * Barauana River ** Itã River ** Barauaninha River * Caroaebe River * Novo River Ajarani River Cachorro River Mucajaí River * Apiaú River Qui ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
picture info	Rivers Of Amazonas (Brazilian State) A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from precipitation through a drainage basin from surface runoff and other sources such as groundwater recharge, springs, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]