Stream Type A3
A3 Description:
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- Steep, narrow, step-pool Streams
- High energy/debris transport
- Entrenchment: Entrenched, Ratio < 1.4
- Water Surface Slope/Gradient: 4-10%
- Dominant Substrate Particle Size: Predominantly cobble
- Width/Depth Ratio: < 12
- Sinuosity: < 1.2
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Image courtesy of Rosgen
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