Bolivia is traversed by hundreds of rivers that drain very different landscapes: the lowland Amazon basin to the north and east, the Río de la Plata system to the southeast, and the high Andean Altiplano where closed basins occur. These waterways shape ecosystems from tropical wetlands and savannas to high-altitude lakes and salt flats, and they play important roles in transport, livelihoods and regional hydrology.

Major drainage basins

The largest portion of Bolivia drains toward the Amazon River through an intricate network of tributaries. To the south and southeast, rivers feed into the Paraná–Paraguay system that ultimately reaches the Atlantic. In the central Altiplano, some rivers drain into endorheic basins (lakes or salt pans) and do not reach the sea. Each basin has distinct seasonal rhythms and ecological communities.

Notable rivers

  • Mamoré — a principal Amazon tributary formed by several headstreams in the lowlands.
  • Beni — crosses diverse terrain from Andean foothills into Amazonian plains.
  • Guaporé (Iténez) — a border river in the north that links forested floodplains.
  • Pilcomayo — part of the Río de la Plata drainage, flowing from the highlands toward the Gran Chaco.
  • Desaguadero — connects Lake Titicaca with lower Altiplano basins and is central to highland hydrology.
  • Paraguay — receives Bolivian tributaries in the southeast, contributing to the larger inland river system.

For a more extensive catalog and place names, see the maintained List of rivers in Bolivia, which records many local and alternative names used across regions and languages.

Historically, rivers provided the main transport routes for indigenous peoples and later for explorers and traders. During the colonial and rubber eras, waterways were conduits for goods and migration. Today they continue to support fishing, subsistence agriculture, riverine transport and, in some areas, hydroelectric development and irrigation projects.

Characteristic features of Bolivian rivers include strong seasonal variation tied to wet and dry seasons, extensive floodplains in Amazonian lowlands, and sediment-rich flows where Andean erosion contributes material downstream. Many rivers cross international borders, requiring cooperation on water use and conservation. Ongoing concerns include deforestation, mining pollution and changes to flow regimes from infrastructure, which affect biodiversity, fisheries and local communities.