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Uraricoera River
The Uraricoera River (Uraricuera) is a river of Roraima state in northern Brazil. The confluence of the Uraricoera and Takutu Rivers forms the Branco River. Basin The river drains the Guayanan Highlands moist forests ecoregion. Part of the river's basin is in the Roraima National Forest. The Maracá Ecological Station was established by presidential decree on 2 June 1981. The station consists of the island of Maracá between the Santa Rosa and Maracá branches of the Uraricoera River in the municipality of Boa Vista, Roraima, with an area of . See also *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 Brazilian Ministry of Transport Rivers of Roraima {{Roraima-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Branco River
The Branco River ( pt, Rio Branco; Engl: ''White River'') is the principal affluent of the Rio Negro from the north. Basin The river drains the Guayanan Highlands moist forests ecoregion. It is enriched by many streams from the Tepui highlands which separate Venezuela and Guyana from Brazil. Its two upper main tributaries are the Uraricoera and the Takutu. The latter almost links its sources with those of the Essequibo; during floods headwaters of the Branco and those of the Essequibo are connected, allowing a level of exchange in the aquatic fauna (such as fish) between the two systems. The Branco flows nearly south, and finds its way into the Negro through several channels and a chain of lagoons similar to those of the latter river. It is long, up to its Uraricoera confluence. It has numerous islands, and, above its mouth, it is broken by a bad series of rapids. Water chemistry As suggested by its name, the Branco (literally "white" in Portuguese) has whitish water that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Takutu River
The Takutu River (Takatu River, Tacutu River) is a river in the Upper Takutu-Upper Essequibo Region of Guyana and Roraima in Brazil. It forms part of the boundary between the two countries. The confluence of the Takutu and Uraricoera Rivers forms the Branco River. The Takutu River's sources almost link with those of the Essequibo River; in the rainy season, flooding links the Takutu to the Rupununi River, a tributary of the Essequibo. The Takutu River Bridge The Takutu River Bridge ( pt, Ponte do Rio Tacutu) is a bridge across the Takutu River, linking Lethem in Guyana to Bonfim in Brazil. It was completed in 2009 and opened on 31 July 2009. Its official inauguration was on 14 September 2009, in th ... establishes an all-weather road connection between Guyana and Brazil. Flooding of the Takutu effects the town of Lethem, the regional capital, and other settlements in the area such as St. Ignatius, Tabatinga, and Culvert City. The river experiences pollution in connection ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
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] |
Confluence
In geography, a confluence (also: ''conflux'') occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); or where two streams meet to become the source of a river of a new name (such as the confluence of the Monongahela and Allegheny rivers at Pittsburgh, forming the Ohio); or where two separated channels of a river (forming a river island) rejoin at the downstream end. Scientific study of confluences Confluences are studied in a variety of sciences. Hydrology studies the characteristic flow patterns of confluences and how they give rise to patterns of erosion, bars, and scour pools. The water flows and their consequences are often studied with mathematical models. Confluences are relevant to the distribution of living organisms (i.e., ecology) as well; "the general pattern ownstream of confluencesof increasing stream flow and decreasing s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guayanan Highlands Moist Forests
The Guayanan Highlands moist forests (NT0124) is an ecoregion in the south of Venezuela and the north of Brazil and in Guyana, Suriname, French Guiana. It is in the Amazon biome. It encompasses an upland region with diverse fauna and flora, which contains dramatic tepuis, or sandstone table mountains. The region has been inaccessible in the past and is generally fairly intact, apart from the north and northeast where large scale agriculture, ranching and mining operations are steadily encroaching on the ecosystem. New roads are opening the interior to logging, and planned dams will have a drastic impact on the riparian zones. Location The ecoregion includes parts of southern Venezuela, western and southern Guyana and northern Brazil, with scattered portions in Suriname and French Guiana. It extends into eastern Colombia. It has a total area of . The ecoregion lies on the Guiana Shield, an ancient upland area between the Amazon and Orinoco basins. It is surrounded by lowland grass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roraima National Forest
The Roraima National Forest ( pt, Floresta Nacional de Roraima) is a national forest in the state of Roraima, Brazil. History The Roraima National Forest and Amazonas National Forest were created by President José Sarney in 1989. The Roraima National Forest was created by decree nº 97545 of 1 March 1989 and covered of the Amazon biome. This had the effect of dividing the territory of the Yanomami people into several separate areas. In 1990 three gold mining reserves were created within the Roraima National Forest. The Yanomami Indigenous Territory was demarcated in 1992 in the lead up to the Earth Summit in Rio de Janeiro. The indigenous territory was created on 25 May 1992 with an area of , and it was thought that this territory completely covered the national forest area. This was followed by a vigorous international campaign in support of the Yanomami people. The gold mines were closed and the miners removed. In an indigenous territory the indigenous people have the exc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maracá Ecological Station
Maracá Ecological Station ( pt, Estação Ecológica de Maracá) is an ecological station in Boa Vista, Roraima, Brazil. It consists of a large island in the Uraricoera River that is covered by Amazon rainforest. History The Maracá Ecological Station was established by presidential decree on 2 June 1981. The station consists of the island of Maracá between the Santa Rosa and Maracá branches of the Uraricoera River in the municipality of Boa Vista, Roraima, with an area of . The Maracá Ecological Station now covers . It was established with the purpose of preserving a representative sample of the Amazon ecosystem. A grid of trails was designed by the Roraima regional center of PPBio, and completed in March 2006. Status As of 2009 the Ecological Station was a "strict nature reserve" under IUCN protected area category Ia, with a terrestrial area of . It is administered by the Chico Mendes Institute for Biodiversity Conservation. The conservation unit is supported by the Amaz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boa Vista, Roraima
Boa Vista (, literally ''Good View''; figuratively "Fairview") is the capital of the Brazilian state of Roraima. Situated on the western bank of the Branco River, the city lies from Brazil's border with Venezuela. It is the only Brazilian state capital located entirely north of the equator. Boa Vista is the most populous municipality in the state of Roraima; approximately half of the population of the state lives in the city. Commerce mostly occurs with Manaus, the capital of the State of Amazonas. Business also takes place between Boa Vista and with the cities of Lethem, in Guyana and Santa Elena de Uairén, in Venezuela. These two foreign cities are the only major cities that can be accessed from Boa Vista by road, although roads connect other smaller state municipalities with the capital city. Travel by airplane is the only means of transportation with other regions of the country. As a modern city, Boa Vista stands out among the other capitals of the North Region of Bra ... [...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] |
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