Channel Assessment Procedure Field Guidebook

[Table of Contents]

Appendix 2.

Diagnostic channel keys


Morphology:
Disturbance level:
Code:
Riffle-pool
Stable
RPg-w: S
RPg-w
S



Generally:
Very complex channel morphology with divers range of pool and riffle sizes, shapes and types, undercut banks, and highly variable widths and sediment textures.
Pools cinoruse 75% of the channel and have wide range of depths; many pools can be over 1 m deep at low flow.
Wide range of sediment size (fine sand to cobbles).
LWD is present and plays a critical role in controlling channel morphology (influences deposition and the scour pattern of channel bed and banks).

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