Channel Morphology of Glaciated Partially Confined Channels
(Information compiled by A. Bryden)
These channels are in glacially formed U-shaped valleys in which channels are partially disconnected from hillslope processes. This morphology is characterized by moderate to steep gradient alluvial channels confined on at least one bank by bedrock or the valley wall. Channel confinement by the valley wall exposes the channel to hillslope processes such as debris flows. Gradient and transport capacity of these channels vary, leading to a range of possible channel morphologies.
The channel morphology of a partially confined glaciated valley can vary over short distances. Step-pool morphologies are most common, although pool-riffle, cascade, and even bedrock sections can also be present.
Glaciated Partially Confined Channel, Cache La Poudre River
(Photo by L. Polvi)