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Channel Condition Metric

Channel Condition Metric. Four measures related to channel condition Sinuosity (pool formation) Pool/Riffle Development Channel Modification Channel Stability. Sinuosity. ·. Ratio of Length to Down-valley Distance. Bend Poorly . 1. Defined. 1. 2. 3. 2. 4. 5. 3. 6. No . Low.

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Channel Condition Metric

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  1. Channel Condition Metric • Four measures related to channel condition • Sinuosity (pool formation) • Pool/Riffle Development • Channel Modification • Channel Stability

  2. Sinuosity · Ratio of Length to Down-valley Distance Bend Poorly 1 Defined 1 2 3 2 4 5 3 6 No Low Moderate High Sinuosity Sinuosity Sinuosity Sinuosity Function: Creates depth and habitat heterogeneity, more habitat per unit distance

  3. Riffle-Pool Development

  4. Channel Evolution • Channel Beginning to Migrate and Deposit Sediment on Inside Bends • Fair-Poor Riffle Pool Development

  5. No Channelization

  6. Recovering

  7. Recent Channelization or No Recovery

  8. Channel Condition Affects the Abundance and Size of Small- mouth Bass in Ohio Streams & Rivers • Smallmouth bass are one of the most popular and wide- spread game fish in Ohio and are a sentinel top carnivore for WWH and EWH streams and rivers. • Adverse effects of channel modification to smallmouth bass include loss of cover, loss of pools, degradation of substrates, and food web alterations.

  9. Stable Channel Characteristics • Mature Riparian • Deep Pools • Stable, vegetated non-eroding banks • Large diameter, unembedded substrates • Well defined pools and riffles

  10. Channel Instability • Signs of Instability: • Unvegetated Point Bars • Shallow, Fine Diameter, Diagonal Riffle Features • High Bedload • Bank Erosion

  11. WSVs for Channel Score

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