# Mamoré River > river in Bolivia & Brazil **Wikidata**: [Q117615](https://www.wikidata.org/wiki/Q117615) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Mamoré_River) **Source**: https://4ort.xyz/entity/mamor-river ## Summary The Mamoré River is a major watercourse that flows through the western part of Bolivia and the eastern part of Brazil, forming a significant portion of the Amazon Basin. It is a key tributary of the Madeira River, which ultimately joins the Amazon River. The river is notable for its ecological importance and its role in the hydrology of the region. ## Key Facts - The Mamoré River is a river that traverses Bolivia and Brazil. - It is a major tributary of the Madeira River, which is a principal tributary of the Amazon River. - The river’s coordinates are approximately 15.944758° S, 64.755883° W and 10.382129° S, 65.390282° W. - The river is also known by the aliases “Mamore River” and “Rio Mamoré.” - The Wikipedia page for the Mamoré River has 49 sitelinks. - Bolivia, one of the countries through which the river flows, became a sovereign state in 1825. - Brazil, the other country through which the river flows, declared independence from Portugal on 7 September 1822. - Bolivia’s official languages include Spanish, Aymara, Quechua, and Guarani, while Brazil’s official language is Portuguese. - Bolivia’s capital cities are Sucre (constitutional) and La Paz (administrative), and Brazil’s capital is Brasília. - Bolivia’s area is 1,098,581 km²; Brazil’s area is 8,515,767 km². - Bolivia’s population (2023 estimate) is 12,244,159; Brazil’s population (2025 estimate) is approximately 213.4 million. - Bolivia’s currency is the Boliviano; Brazil’s currency is the Brazilian real. - Bolivia’s highest point is Nevado Sajama (6,542 m); Brazil’s highest point is Pico da Neblina (2,994 m). - Bolivia’s lowest point is the Paraguay River (90 m); Brazil’s lowest point is the Atlantic Ocean (sea level). - Bolivia’s time zone is UTC−04:00; Brazil spans UTC−02:00 to UTC−05:00. - Bolivia’s ISO codes are BO, BOL, 068; Brazil’s ISO codes are BR, BRA, 076. - Bolivia’s telephone code is +591; Brazil’s telephone code is +55. - Bolivia’s internet TLD is .bo; Brazil’s internet TLD is .br. ## FAQs **What countries does the Mamoré River flow through?** The river flows through Bolivia and Brazil, linking the western part of Bolivia with the eastern region of Brazil. **Which major river does the Mamoré feed into?** It is a tributary of the Madeira River, which in turn is a major tributary of the Amazon River. **What are the official languages spoken in the countries the Mamoré River traverses?** In Bolivia, the official languages are Spanish, Aymara, Quechua, and Guarani. In Brazil, the official language is Portuguese. **What is the significance of the Mamoré River in the Amazon Basin?** The Mamoré contributes substantial freshwater flow to the Madeira and ultimately the Amazon, supporting diverse ecosystems and human communities along its banks. **How does the Mamoré River relate to Bolivia’s and Brazil’s geography?** Bolivia, a landlocked country, has the Mamoré as one of its key rivers, while Brazil, the largest South American country, shares the river’s lower reaches, illustrating the interconnectivity of the continent’s waterways. ## Why It Matters The Mamoré River is a linchpin of the Amazonian hydrological network, delivering water, sediment, and nutrients that sustain vast tropical rainforests and the livelihoods of millions. Its flow shapes the ecological character of the Madeira River basin, influencing fish migration patterns, floodplain dynamics, and the productivity of downstream fisheries. For Bolivia, the river is a vital resource for agriculture, transportation, and hydroelectric potential, while in Brazil it supports regional biodiversity and contributes to the country’s extensive riverine infrastructure. Understanding the Mamoré’s course, tributaries, and seasonal variations is essential for water resource management, conservation planning, and mitigating the impacts of climate change on one of the world’s most critical ecological corridors. ## Notable For - Serves as a major tributary of the Madeira River, a key artery of the Amazon Basin. - Flows through two distinct sovereign states—Bolivia and Brazil—highlighting its transboundary nature. - Contributes to the hydrological and ecological diversity of the western Amazon rainforest. - Its basin supports a wide array of endemic species and culturally significant communities. - Plays a role in regional hydroelectric potential and transportation networks. ## Body ### Geographic Course The Mamoré River originates in the highlands of Bolivia, flowing generally southward before turning eastward into Brazil. Its course traverses diverse landscapes, from Andean foothills to lowland floodplains, before merging with the Madeira River. The river’s approximate coordinates at key points are 15.944758° S, 64.755883° W and 10.382129° S, 65.390282° W. ### Hydrology As a tributary of the Madeira River, the Mamoré contributes significant discharge volumes that influence the Madeira’s flow regime. The river’s seasonal flooding supports nutrient-rich floodplain ecosystems, which are critical for fish spawning and agricultural productivity. ### Ecological Significance The Mamoré basin hosts a mosaic of habitats, including tropical rainforests, wetlands, and savannas. These ecosystems provide refuge for numerous bird, mammal, and aquatic species, many of which are endemic or threatened. The river’s flood dynamics create breeding grounds for fish species that are vital to local fisheries. ### Human Use and Communities Communities along the Mamoré rely on the river for transportation, fishing, and irrigation. In Bolivia, the river’s banks are home to indigenous groups who depend on its resources for subsistence and cultural practices. In Brazil, the river supports agricultural activities and serves as a corridor for trade and movement. ### Transboundary Governance Because the Mamoré crosses international borders, its management involves cooperation between Bolivia and Brazil. Both countries must coordinate on issues such as water allocation, pollution control, and conservation initiatives to ensure sustainable use of the river’s resources. ### Related Waterways - **Madeira River**: The Mamoré joins the Madeira, which is a major tributary of the Amazon River. - **Amazon River**: The Madeira ultimately feeds into the Amazon, making the Mamoré part of the largest river system in the world. ### Cultural and Economic Context - **Bolivia**: The river flows through a country with a diverse linguistic heritage, including Spanish, Aymara, Quechua, and Guarani. Bolivia’s capital cities are Sucre (constitutional) and La Paz (administrative). - **Brazil**: The river enters a nation that declared independence from Portugal on 7 September 1822, with Brasília as its capital. Brazil’s official language is Portuguese, and it is the largest country in South America by area. ### Environmental Challenges The Mamoré basin faces pressures from deforestation, mining, and agricultural expansion. These activities threaten water quality, biodiversity, and the livelihoods of riverine communities. International and national conservation efforts aim to mitigate these impacts and preserve the ecological integrity of the basin. ### Conservation Efforts Both Bolivia and Brazil have established protected areas within the Mamoré basin to safeguard critical habitats. Collaborative research projects monitor fish populations, water quality, and the effects of climate variability on flood regimes. ### Future Outlook Sustainable management of the Mamoré River will require integrated water resource planning that balances ecological preservation with the economic needs of local populations. Climate change projections suggest altered precipitation patterns, which could affect the river’s flow and the services it provides to downstream ecosystems and human communities. --- ## References 1. Virtual International Authority File 2. Freebase Data Dumps. 2013 3. GeoNames