Rio Nanay is a Peruvian river in the Loreto region of northeastern Peru. It is 315km long and is a tributary of the Amazon River, with an area of 17.600km². The Nanay River is a slow-moving river that traverses flat, low-lying land, having a winding course that forms dense marshes and lagoons, and abundant fish resources, including many species of well-known ornamental fish. It is 3.5km from Iquitos, the largest town in the Peruvian Amazon.
The Nanay is a black water river stained by the tannins of the surrounding secondary forests, with trees such as ceticos, cataguas and chontas lining its banks. During the rainy season, the river overflows its banks, flooding the nearby forest, causing these trees to collapse and fall into the water. This tangle of fallen branches and roots creates a habitat for a large number of smaller fish. The soil is sandy, white in color and there are no stones.
- GPS
- -3.9123828, -73.6625290
- Geographical region
- South America
- Drainage Basin
- Rio Amazonas
- River catchment
- Nanay Rio
- Water body type
- Rio
- Water body name
- Nanay
- Water body part
- Meander
- Water body course
- Middle course
- Water body: tributary of
- Rio
- Tributary name
- Amazonas





