The Beni River ( es, Río Beni) is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

in the north of

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

. It rises north of

La Paz La Paz (), officially known as Nuestra Señora de La Paz (Spanish pronunciation: ), is the seat of government of the Bolivia, Plurinational State of Bolivia. With an estimated 816,044 residents as of 2020, La Paz is the List of Bolivian cities ...

and flows northeast. 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 Rive ...

is where its mouth is at. In the upper portion of its course it flows through highland forest and rainforest, where the rapids of

Cachuela Esperanza Cachuela Esperanza is a village in the Bolivian Departamento Beni. Location ''Cachuela Esperanza'' ("rapids of hope") is situated on the right bank at the rapids of Beni River, 30 km before its confluence with Mamoré River which both for ...

interrupt the upstream navigability of the river. The middle river runs through dense rainforest where it is joined by the

Madidi River Madidi () is a river located in the La Paz Department of Bolivia. It is tributary of the Beni River and a part of the Amazon Basin. It runs through the Madidi National Park Madidi () is a national park in the upper Amazon Basin, Amazon river b ...

and the

Tuichi River The Tuichi River (in Spanish Río Tuichi) is a river in the Madidi National Park in the north of Bolivia. The Tuichi River flows through the rainforest and joins the Beni River south of Rurrenabaque. See also * Madidi River Madidi () is a r ...

which flow through

Madidi National Park Madidi () is a national park in the upper Amazon river basin in Bolivia. Established in 1995, it has an area of 18,958km². Along with the nearby protected (though not necessarily contiguous) areas Manuripi-Heath, Apolobamba, and the Manu Biosp ...

. The Tuichi River joins the Beni River upstream from the town

Rurrenabaque Rurrenabaque is a small town in the north of Bolivia on the Beni River. It is the capital of Rurrenabaque Municipality. In recent years it has become popular with international tourism as it is an easy gateway for visits to Madidi National Park ( ...

. North of Rurrenabaque, the Beni River runs through the

Llanos de Moxos The Beni savanna, also known as the Llanos de Moxos or Moxos plains, is a tropical savanna ecoregion of the Beni Department of northern Bolivia. Setting The Beni savanna covers an area of in the lowlands of northern Bolivia, with small portio ...

also known as the Beni Savanna, which is named from the river. It empties into the larger Madre de Dios at

Riberalta Riberalta is a town in the Beni Department in northern Bolivia, situated where the Madre de Dios River joins the Beni River. Riberalta is on the south (south east) bank of the Beni River. As the capital of the province of Vaca Diez, the city ...

. The Beni River has a number of minor tributaries, including intermittent streams such as the Emero River. In 1947, the

CIA The Central Intelligence Agency (CIA ), known informally as the Agency and historically as the Company, is a civilian intelligence agency, foreign intelligence service of the federal government of the United States, officially tasked with gat ...

received unverified information that suggested there were settlements of escaped Nazis along the Beni and its tributaries.CIA Information Report: Subject: Heavily Armed Nazi Colony
- received 1947, disseminated 1950, declassified 2001.

References

Rivers of Beni Department Rivers of La Paz Department (Bolivia) Rivers of Pando Department {{Bolivia-river-stub