Madeira River

The Madeira River is a major Amazon tributary formed by the Beni and Mamoré rivers. It flows through Bolivia and Brazil before joining the Amazon in Brazil.

Beni River: A major river rising in the Bolivian Andes and joining the Mamoré to form the Madeira. It is one of the two rivers whose confluence creates the Madeira.
Santo Antônio Dam: A hydroelectric dam on the Madeira River near Porto Velho, Brazil. It is one of the major power projects built directly on the river.
Teotônio Rapids: A former set of rapids on the Madeira River near Porto Velho, Brazil, now submerged by the Santo Antônio reservoir. These rapids exemplified the navigation barriers that shaped settlement and railway plans.
Fish migration: The seasonal movement of fish between habitats for feeding, growth, or reproduction. Dams and rapids influence routes used by migratory fish in the Madeira basin.
Mamoré River: A major river of Bolivia and Brazil that joins the Beni to form the Madeira. Its meeting with the Beni marks the Madeira’s formation.
Jirau Dam: A hydroelectric dam on the Madeira River upstream from Porto Velho, Brazil. Its construction brought energy production and environmental debate to the Madeira.
Rondônia: A state in western Brazil, crossed by the Madeira River and its tributaries. The river runs through Rondônia’s capital and supports settlement across the state.
Hydroelectric power in Brazil: Electricity generation in Brazil using energy from flowing or falling water. The Madeira dams contribute to the national hydropower system.
Amazon River: A vast South American river system that drains into the Atlantic Ocean. The Madeira carries a large share of the basin’s water and sediment into the Amazon.
Porto Velho: The capital of Brazil’s Rondônia state, located beside the Madeira River. The city is the river’s principal Brazilian urban and transport hub.

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Purus RiverRelated: It meets the Amazon downstream of the Purus's confluence.