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West Branch Ompompanosuc

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Record: 1    Segment ID: M01-    Stream Name: West Branch Ompompanoosuc

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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 3 C to F Yes
7.2 Channel Aggradation 7 None No
7.3 Widening Channel 7 None No
7.4 Change in Planform 5 None No
  Total Score 22  
  Condition Rating 0.28  
7.5 Channel Evolution Model F  
  Channel Evolution Stage III  
7.6 Geomorphic Stream Condition Poor  
7.7 Stream Sensitivity Extreme  
7.5 Channel Adjustment Processes Narrative  
  Extreme historic incision resulting in a stream type departure from a C to an F. This is surprising given the grade controls at the top of the segment and the position in the watershed. You would expect the channel to be overwhelmed with sediment and not incised. Aggradation is major to extreme with multiple unvegetated mid channel and diagonal bars. Major widening with high banks and erosion along much of the segment. Planform adjustment is extreme with high lateral erosion, islands, and braiding.