- Amazon River: The second longest river in the world, flowing for over 6,400 kilometers (4,000 miles) through the Amazon rainforest.
- Negro River: One of the largest tributaries of the Amazon River, known for its dark, almost black water.
- Madeira River: Another major tributary of the Amazon River, transporting a large amount of sediment from the Andes Mountains.
- Purus River: A tributary of the Amazon River known for its meandering course and diverse aquatic ecosystems.
- Tapajós River: A major tributary of the Amazon River famous for its crystal blue water and unique beaches.
Lakes:
- Lake Coari: A large lake in the Amazon rainforest known for its rich biodiversity and pristine environment.
- Lake Uatumã: A lake in the Amazon rainforest that houses several endemic fish species and serves as an important habitat for wildlife.
- Lake Tefé: A lake located in the central part of the Amazon rainforest, known for its scenic beauty and abundance of aquatic life.
- Lake Manacapuru: A shallow lake in the Amazon rainforest renowned for its incredible fishing opportunities.
Floodplains:
- The Amazon River's floodplains cover an area of about 1.5 million square kilometers (580,000 square miles) during the wet season.
- The annual flooding of the floodplains replenishes nutrients, supports aquatic life, and shapes the ecosystem of the Amazon rainforest.
Estuaries:
- The Amazon River forms a large estuary where it meets the Atlantic Ocean, creating intricate ecosystems at the interface between fresh and saltwater environments.
