The Purus river is in the Amazon basin in South America.

21,166km

The Pará and the Amazon are connected by a series of river channels called furos near the town of Breves; between them lies Marajó, an island almost the size of Switzerland that is the world's largest combined river/sea island. Others consider it the independent lower reach of the Tocantins River.

• Pioneer River is in Australia,
• Platte River is in Nebraska,
• Purus River is in Brazil,
• Po River is in Italy,

There are over 1,100 tributaries that flow into the Amazon River. The three longest are the

Madeira River(1), Purus River(2) and the Japur River(3).Madeira River