Channel Assessment Procedure Field Guidebook

[Table of Contents]

Appendix 2.

Diagnostic channel keys


Morphology:
Disturbance level:
Code:
Step-pool
Partially aggraded
SPb-w: A1
SPb-w
A1




Relevant field indicators: S4
Generally:
Boulders and cobbles continue to interlock, forming step-pool morphology.
Intervening pools are less extensive due to sediment accumulation.
Sediment accumulation also occurs around LWD.
Sediment covered by moss in isolated locations (e.g., in lee of bedrock outcrops, large boulders, or root wads).

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