Channel Assessment Procedure Field Guidebook

[Table of Contents]

Appendix 2.

Diagnostic channel keys


Morphology:
Disturbance level:
Code:
Cascade-pool
Partially degraded
CPc-w: D1
CPc-w
D1




Relevant field indicators:
S5, C1, D2
Generally:
Cobble steps are intact with minor breaks in line.
Pools are deep with cobble-textured bed.
Channel bed becoming coarser overall, as gravels and finer-textured sediments entrained and transported downstream.
Bars less extensive, and margins near banks have recently established vegetation (channel is beginning to recover).
Deepest pools associated with LWD.

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