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Williams River

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Record: 50    Segment ID: T5.S3.03-    Stream Name: Andover Brook

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Stream Channel  
2.1 Bankfull Width 34 ft.
2.2 Maximum Depth 2.3 ft.
2.3 Mean Depth 1.7 ft.
2.4 Floodprone Width 57 ft.
2.5 Recently Abandoned Floodplain 4.1 ft.
  Human Elevated Floodplain ft.
2.6 Width/Depth Ratio 20.4
2.7 Entrenchment Ratio 1.7
2.8 Incision Ratio - Redently Abandoned Floodplain 1.8
  Incision Ratio - Human Elevated FloodPlain 0.0
2.9 Sinuosity Low
2.10 Type of Riffles Sedimented
2.11 Riffle/Step Spacing Distance 170 ft.
2.12 Substrate Composition  
  Bedrock 0.0 %
  Boulder 8.0 %
  Cobble 40.0 %
  Course Gravel 25.0 %
  Fine Gravel 25.0 %
  Sand 0.0 %
  Silt and smaller 2.0 %
  Clay Present? Yes
  Percent Detritus 2.0 %
  Large Woody Debris Count 71
2.13 Average Largest Particle On  
  Bed 300 mm
  Bar 130 mm
2.14 Phase 2 Stream Type  
  Stream Type B
  Bed Material Gravel
  Subclass Slope c
  Dominant Bed Form Riffle-Pool
  SubDominant Bed Form Plane Bed
  Field Measured Slope
  Phase 1 Stream Type  
  Stream Type C
  Dominant Bed Material Gravel
  Subclass Slope None
  Bed Form Riffle-Pool
  Sub-reach Stream Type  
  Reference Stream Type
  Reference Bed Material
  Reference Subclass Slope
  Reference Bedform
  Were Channel Dimensions Significantly Changed By Major Flooding No
  Were channel dimensions significantly changed by human alteration associated with flood recovery efforts (e.g., reshaping of banks by yellow machines)? No
  Channel Enlargement 6 %
  Comments