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West River

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Record: 59    Segment ID: T12.03-    Stream Name: Trib 12 to West River

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NOTE: Enter the Confinement Evaluated first, then the Scores, then the rest.

Rapid Geomorphic Assessment  
  Confinement Evaluated Unconfined  
  Geomorphic Assessment Scores
  Score STD (7.5) Historic (7.5)
7.1 Channel Degradation 8 None Yes
7.2 Channel Aggradation 11 None No
7.3 Widening Channel 10 None No
7.4 Change in Planform 7 None No
  Total Score 36  
  Condition Rating 0.45  
7.5 Channel Evolution Model F  
  Channel Evolution Stage II  
7.6 Geomorphic Stream Condition  
7.7 Stream Sensitivity  
7.5 Channel Adjustment Processes Narrative  
  The reach is highly variable with portions that were likely reference Bc, however the majority of the reach is reference C with a broad valley. Much of the reach is encroached by Thompsonville Road leading to an overall change in valley confinement to Narrow. Incision is likely historic and areas of mid channel sediment accumulation and several flood chutes were observed, suggesting that some Stage IV adjustments are occurring. We assessed the reach as Stage II due to historic incision and the lack of actual planform adjustment despite the sediment accumulation.