Furo (river channel)

Furo is the hydrographic term for a type of river channel that is prevalent in the Brazilian Amazon basin, especially in the estuary where the currents of the Amazon River meet the tides of the Atlantic Ocean. They can be described as an anastomosing system, where the furos create a complex web of connections between each other and with larger rivers. A particularly intricate system called Furos de Breves can be found on the western side of Marajó, a large island in the Amazon Delta.