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Winooski Mid, Alder to Montp

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Record: 66    Segment ID: R13.S1.02-S1.09-    Stream Name: Thatcher Brook

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Stream Channel  
2.1 Bankfull Width 23 ft.
2.2 Maximum Depth 2.1 ft.
2.3 Mean Depth 1.5 ft.
2.4 Floodprone Width 135 ft.
2.5 Recently Abandoned Floodplain 2.8 ft.
  Human Elevated Floodplain ft.
2.6 Width/Depth Ratio 15.2
2.7 Entrenchment Ratio 5.8
2.8 Incision Ratio - Redently Abandoned Floodplain 1.3
  Incision Ratio - Human Elevated FloodPlain 0.0
2.9 Sinuosity Low
2.10 Type of Riffles Sedimented
2.11 Riffle/Step Spacing Distance 53.5 ft.
2.12 Substrate Composition  
  Bedrock 0.0 %
  Boulder 0.0 %
  Cobble 9.0 %
  Course Gravel 45.0 %
  Fine Gravel 28.0 %
  Sand 18.0 %
  Silt and smaller 0.0 %
  Clay Present? No
  Percent Detritus 0.0 %
  Large Woody Debris Count 33
2.13 Average Largest Particle On  
  Bed 7.14 inches
  Bar 4.02 inches
2.14 Phase 2 Stream Type  
  Stream Type C
  Bed Material Gravel
  Subclass Slope None
  Dominant Bed Form Riffle-Pool
  SubDominant Bed Form Braided
  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 0 %
  Comments Some windrowing in upper part of segment, major aggradation. Upstream part of segment sometimes runs dry, partly due to watershed drainage characteristics, and partly due to dam for Waterbury drinking water supply. Stream sometimes runs dry even when water flows over the dam, but during low flow, the town takes water and does not release.