There are two main sections in this module:

A Lateral View Across the Stream Corridor
The focus here is on structural features or zones that one encounters moving across the stream. Lateral structure of the corridor affects the movement of water, materials, energy, and organisms from upland areas into the stream channel.

A Longitudinal View Along the Stream Corridor
This section takes a view of structure along the stream corridor's whole length from its headwaters to mouth. It includes discussions of channel form, sediment transport and deposition, and how biological communities have adapted to different stages of the river continuum.