| Morphology: Disturbance level: Code: |
Step-pool Stable SPr: S |
SPb S |
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Generally:
Steps formed primarily by individual large boulders or "blocks." Blocks are either relict features or colluvial, too large to be moved by stream flows (may be moved by debris flows). Blocks interlock to form complete steps that span the channel perpendicular to banks (stream flow tumbles over steps). Pool depth determined by boulder size. Fine-textured sediment can be stored behind or between blocks. |
