Channel Assessment Procedure Field Guidebook

[Table of Contents]

Appendix 2.

Diagnostic channel keys


Morphology:
Disturbance level:
Code:
Cascade-pool
Partially degraded
CPb: D1
CPb
D1




Relevant field indicators:
S5, C1
Generally:
Stone lines becoming less continuous; diamond and "net" shapes not obvious.
Bed is becoming coarser-textured as fine sediments are excavated from the reach.
Minor sections of channel bed consist of exposed bedrock.
Pools represent <50% of the channel; flow is rapid through pools.
Most stones not moss-covered.
LWD plays an insignificant role in controlling channel pattern.

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