The Mamoré is a large river in

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

and

Bolivia Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...

which unites with the

Madre de Dios River The Madre de Dios River () is a river shared by Bolivia and Peru which is homonymous to the Peruvian region it runs through. On Bolivian territory, it receives the Beni River, close to the town of Riberalta, which later joins with the Mamore Riv ...

to form the

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, one of the largest tributaries of the

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. It rises on the northern slope of the Sierra de Cochabamba, east of the city of

Cochabamba Cochabamba (; ) is a city and municipality in central Bolivia in a valley in the Andes mountain range. It is the capital (political), capital of the Cochabamba Department and the list of cities in Bolivia, fourth largest city in Bolivia, with ...

, and is known as the Chimoré down to its junction with the Chapare. Its larger tributaries are the Chapare, Secure, Apere, and Yacuma from the west, and the Ichilo, Guapay, Ivari, Manique and Guapore from the east. Taking into account its length only, the Guapay should be considered the upper part of the Mamore; but it is shallow and obstructed, and carries a much smaller volume of water. The Guapore also rivals the Mamore in length and volume, having its source in the Parecis plateau,

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, Brazil, a few miles from streams flowing north-ward to the Tapajos and Amazon, and southward to the

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and Paraná rivers. The Mamore is interrupted by rapids a few miles above its junction with the Beni, but a railway 300 km long has been undertaken from below the rapids of the Madeira. Above the rapids the river is navigable to Chimore, at the foot of the sierra, and most of its tributaries are navigable for long distances. In 1874, Franz Keller gave the outflow of the Mamoré at mean water level, and not including the Guapore, as 41,459 cm³/sec (2,530 cub. in. per second), and the area of its

drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...

, also not including the Guapore, as 24,299 km² (9,382 square miles).Franz Keller, ''The Amazon and Madeira Rivers'', (New York, 1874) An extensive pre-Columbian civilization existed in the basin of the Mamore in the swampy area known as the Llanos de Moxos, in northeastern Bolivia.

References

* * Edward D. Mathews, ''Up the Amazon and Madeira Rivers'' (London, 1879). {{DEFAULTSORT:Mamore River Rivers of Cochabamba Department Rivers of Beni Department Rivers of Santa Cruz Department (Bolivia)

See also

References