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Upper Missisquoi

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Record: 61    Segment ID: R45S3.1S1.01-    Stream Name: Ace Brook

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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 18 None No
7.2 Channel Aggradation 8 None No
7.3 Widening Channel 9 None No
7.4 Change in Planform 7 None No
  Total Score 42  
  Condition Rating 0.52  
7.5 Channel Evolution Model D  
  Channel Evolution Stage IId  
7.6 Geomorphic Stream Condition Good  
7.7 Stream Sensitivity High  
7.5 Channel Adjustment Processes Narrative  
  Major aggradation due to change in slope. Planform is also major due to flood chutes and braided areas. Stream has abundant aggradation due to the change in slope upstream. Alluvial fan indexed due to abrupt change in slope. The aggradation has resulted in braiding and widening of stream. The aggradation and subsequent widening are natural adjustments and not an indication of a departure from reference. The condition was selected as "good" based on administrative judgement and reflects that the major aggradation and planform is expected in this type of system.