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The Rio Negro (Spanish: Río Negro [ˈri.o ˈneɣɾo] "Black River"), or Guainía as it is known in its upper part, is the largest left tributary of the Amazon River (accounting for about 14% of the water in the Amazon basin), the largest blackwater river in the world, [8] and one of the world's ten largest rivers by average discharge.
Tourism adds at least 10% to Rio Negro's economy. Argentina's ninth-largest, Rio Negro's economy is a diversified service-based one with vigorous agricultural and light manufacturing sectors. Its 2006 output was an estimated US$5.420 billion, or a per capita income of US$9,805. [ 17 ]
Río Negro (Spanish pronunciation: [ˈri.o ˈneɣɾo]; Black River) is the main river of Patagonia in terms of the size of its drainage basin, its associated agricultural produce and population living at its shores. In eastern Patagonia it is also the largest by flow rate.
The fluvial section extends to the west shore of the Rio Negro, which is mainly protected by the Rio Negro Right Bank Environmental Protection Area and the Rio Negro Sustainable Development Reserve. [4] The terrain ranges in altitude from 50 to 150 metres (160 to 490 ft) above sea level. Average annual rainfall is 2,100 millimetres (83 in).
Black River is a common name for streams and communities around the world: in Spanish and Portuguese, Rio Negro; in French, Rivière Noire; in Turkish, Kara Su; in Serbo-Croatian, Crna Reka, Црна Река or Crna Rijeka, Црна Ријека; in Macedonian, Црна Река, Crna Reka.
The Caroní thus belongs to the blackwater rivers, as does the Negro River, or Rio Negro in Brazil, Venezuela and Colombia. In the late 1940s diamonds were found in the Caroní basin near the famous Lost World Region which then was accessible only by aircraft and four wheel drive vehicles. [1]
Viedma (Spanish pronunciation:) is the capital and fourth largest city of the Río Negro Province, in northern Patagonia, Argentina.The city has 59,993 inhabitants (2022), [1] and is located on the southern margin of the Negro River, about 30 kilometres off the Atlantic Coast, and 960 km from the city of Buenos Aires on the National Route 3.
The Alto Rio Negro Indigenous Territory is 96.24% in the Rio Negro basin and 3.6% in the Japurá River basin. The Rio Negro defines the southwest boundary. Major tributaries of the Rio Negro in the reserve include the Xié, Içana and Uaupés rivers. The Tiquié River is an important tributary of the Uapés. [1]