Channel Assessment Procedure Field Guidebook

[Table of Contents]

Appendix 2.

Diagnostic channel keys


Morphology:
Disturbance level:
Code:
Cascade-pool
Severely degraded
CPc-w: D3
CPc-w
D3




Relevant field indicators:
S5, C1, C2, C5, B1,
B3, D1, D2, D3
Generally:
Severely degraded channels have no steps present; steps have been eroded, and stream flow is rapid along entire channel with no pools.
Bed is coarse-textured, mainly cobbles, with localized exposure of bedrock.
Bars are absent, sediment remaining along channel margin has become vegetated.
LWD present only along channel banks.

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