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Table of Contents

ILLUSTRATIONS

    Figure
    1. Spatial hierarchy of basin, stream segment, stream reach, and microhabitat
    2. Form for conducting a basin characterization
    3. Form for conducting a segment characterization
    4. Diagram of the three main geomorphic channel units: (A) pool--a part of the stream with reduced velocity, commonly with water deeper than surrounding areas; (B) riffle--a part of the stream where the water flows swiftly over completely or partially submerged obstructions to produce surface agitation; and (C) run--a slow moving, relatively shallow body of water with moderately low velocities and little or no surface turbulence
    5. Form for conducting a reach characterization
    6. Example of locations of transects within a reach
    7. Diagram of the relative position of geomorphic features along streams