Step-pool formation models and associated step spacing.

The article discusses the development of step-pool bedforms through high flow rates and high sediment influx and transport rates in the U.S. It notes that step setting events are responsible in mobilizing and rearranging the large step-forming grain sizes. Laboratory experiments are conducted and result shows that step bedforms are created during the flow movement of large, step-forming clasts. During the experiment, several step formations are proposed including particle cluster, migrating hydraulic jump, cascade, antidune and scouring formation models.