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Geography

How River Bifurcation Nodes Control Flood Risk and Channel Migration

Quick fact

The world's largest river bifurcation is the Casiquiare canal, which connects the Orinoco and Amazon basins—about 30% of the Orinoco's flow is diverted into the Amazon. This natural split has profound effects on regional hydrology and sediment transport.

Why this is interesting

A single river can suddenly split into two, and that split can spell the difference between a safe town and a submerged one. These splits, called bifurcations, act as decision points that govern where water goes and how the land changes.