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Williams River

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Record: 52    Segment ID: T5.S3.04-    Stream Name: Andover 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 13 None No
7.2 Channel Aggradation 12 None No
7.3 Widening Channel 12 None No
7.4 Change in Planform 10 None No
  Total Score 47  
  Condition Rating 0.59  
7.5 Channel Evolution Model F  
  Channel Evolution Stage IV  
7.6 Geomorphic Stream Condition Fair  
7.7 Stream Sensitivity Very High  
7.5 Channel Adjustment Processes Narrative  
  This segment is actively adjusting planform. In the lower portion of the reach there is a beaver complex that includes multiple channels as the segment adjusts to the beavers' structures. Upstream there is a campground that saw a lot of flooding during both T.S. Irene and the July 2014 floods. This flooding carved a large flood chute at the downstream end of the campground, which has since been bermed and cut off. The reach has consistent access to floodplain with some minor areas of incision and widening, primarily in the upper portion of the reach where the cross-section was taken. The presence of migration features and mid-channel bars illuminate the planform adjustment in this segment, which was designated as stage IV in the channel evolution process.