Channel Assessment Procedure Field Guidebook

[Table of Contents]

Appendix 2.

Diagnostic channel keys


Morphology:
Disturbance level:
Code:
Cascade-pool
Moderately aggraded
CPb: A2
CPb
A2




Relevant field indicators:
S3, S4, C1, C2, C3, C4
Generally:
Stone lines intact with flow over the steps and around large boulders.
Pools infilled; flow is rapid with minor areas of slower moving water.
Channel is filled with sediment; top of sediment accumulation is almost as high as surrounding boulders.
No moss-covered sediment.
Minimal localized channel widening.

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