How many rivers are endangered?

We are proud to join with partners like those advocating for the future of America's Most Endangered Rivers® of 2023. Together, we must defend these 10 rivers — and demand greater protections for all 3 million miles of rivers across our country.



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Here is American Rivers' complete list of 2023 Most Endangered Rivers and the major threat each is facing:
  • Colorado River in the Grand Canyon: CLIMATE CHANGE & OUTDATED WATER MANAGEMENT.
  • Ohio River: POLLUTION & CLIMATE CHANGE.
  • Pearl River: DREDGING & DAM CONSTRUCTION.
  • Snake River: FOUR FEDERAL DAMS.


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It's no surprise that the Colorado River holds its place as the number one Most Endangered River for the second year in a row, as outdated water management, over-use, and climate change all pose great risks to this national treasure.

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The Snake River also has diverse wildlife that lives in and near its water. Volcanic activity and flooding during the last ice age created this winding river. Contrary to its name, the river isn't full of snakes.

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The Top 5 Most Polluted Rivers In The World
  • Ganges River, India: The Ganges River is a highly revered waterbody among Hindus. ...
  • Citarum River, Indonesia: The Citarum River in Indonesia is the second most polluted river in the world. ...
  • The Buriganga River. ...
  • Yellow River, China: ...
  • Mississippi River, United States:


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While deforestation has decreased significantly in the Amazon this year, the forest is still burning at an alarming rate.

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Answer and Explanation: No, the Amazon River's water is not safe for humans to drink, as it is far too muddy and has too many biological components; a person who drank this water would likely get sick.

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The Shanay-Timpishka, also known as La Bomba, is a tributary of the Amazon River, called the only boiling river in the world. It is 6.4 km (4.0 mi) long. It is known for the very high temperature of its waters—from 45 °C (113 °F) to nearly 100 °C (212 °F).

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The Ob-Irtysh River The seventh-longest river in the world is the Ob-Irtysh river system. The Ob River originates in western Siberia in the Altai Mountains and is met by the Irtysh River that begins in Mongolia and flows through China and Kazakhstan before entering Russia.

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