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Williams River

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Record: 31    Segment ID: T5.08-    Stream Name: Middle Branch Williams River

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Stream Channel  
2.1 Bankfull Width 34 ft.
2.2 Maximum Depth 2.1 ft.
2.3 Mean Depth 1.4 ft.
2.4 Floodprone Width 46 ft.
2.5 Recently Abandoned Floodplain 3.9 ft.
  Human Elevated Floodplain ft.
2.6 Width/Depth Ratio 23.9
2.7 Entrenchment Ratio 1.4
2.8 Incision Ratio - Redently Abandoned Floodplain 1.9
  Incision Ratio - Human Elevated FloodPlain 0.0
2.9 Sinuosity Low
2.10 Type of Riffles Sedimented
2.11 Riffle/Step Spacing Distance 120 ft.
2.12 Substrate Composition  
  Bedrock 0.0 %
  Boulder 11.0 %
  Cobble 43.0 %
  Course Gravel 27.0 %
  Fine Gravel 11.0 %
  Sand 8.0 %
  Silt and smaller 0.0 %
  Clay Present? Yes
  Percent Detritus 4.0 %
  Large Woody Debris Count 63
2.13 Average Largest Particle On  
  Bed 450 mm
  Bar 220 mm
2.14 Phase 2 Stream Type  
  Stream Type F
  Bed Material Cobble
  Subclass Slope None
  Dominant Bed Form Riffle-Pool
  SubDominant Bed Form
  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 Yes
  Were channel dimensions significantly changed by human alteration associated with flood recovery efforts (e.g., reshaping of banks by yellow machines)? No
  Channel Enlargement 21 %
  Comments