Linked from
The 12 pages that link to River channel, each with the reason it gives.
FloodplainNarrower topic: The floodplain is the adjacent land beyond this usual channel boundary.
LaharRelated: Channels concentrate lahar flows and can carry them far downstream.
River basinRelated: Channels provide the pathways through which basin water moves downstream.
AvulsionBroader topic: Avulsion begins when flow leaves this established route.
RapidsRelated: Channel width, depth, and shape influence where rapids form.