Skip Navigation LinksHome > Projects List > Phase 2 > Data Entry

Williams River

Return to Segment List   Step 0Step 1Step 2Step 3Step 4Step 5Step 6Step 7QA CheckMap


Record: 21    Segment ID: M22-    Stream Name: Williams River

Go to First  Go to Prev  Go to Next  Go to Last  ChangeLog

Stream Channel  
2.1 Bankfull Width 43 ft.
2.2 Maximum Depth 2.7 ft.
2.3 Mean Depth 1.6 ft.
2.4 Floodprone Width 100 ft.
2.5 Recently Abandoned Floodplain 4.2 ft.
  Human Elevated Floodplain 5.2 ft.
2.6 Width/Depth Ratio 26.9
2.7 Entrenchment Ratio 2.3
2.8 Incision Ratio - Redently Abandoned Floodplain 1.6
  Incision Ratio - Human Elevated FloodPlain 1.9
2.9 Sinuosity Low
2.10 Type of Riffles Sedimented
2.11 Riffle/Step Spacing Distance 130 ft.
2.12 Substrate Composition  
  Bedrock 0.0 %
  Boulder 15.0 %
  Cobble 56.0 %
  Course Gravel 20.0 %
  Fine Gravel 8.0 %
  Sand 1.0 %
  Silt and smaller 0.0 %
  Clay Present? No
  Percent Detritus 6.0 %
  Large Woody Debris Count 107
2.13 Average Largest Particle On  
  Bed 300 mm
  Bar 180 mm
2.14 Phase 2 Stream Type  
  Stream Type C
  Bed Material Cobble
  Subclass Slope b
  Dominant Bed Form Riffle-Pool
  SubDominant Bed Form Plane Bed
  Field Measured Slope
  Phase 1 Stream Type  
  Stream Type C
  Dominant Bed Material Cobble
  Subclass Slope b
  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 52 %
  Comments The downstream portion of the reach is encroached by South Hill Road. This section exhibits an F-type channel geometry similar to M21, however it is not significant enough to warrant a segment. The reach overall contains a bedform departure to a subdominant plane bed as the channel works through the material deposited in the alluvial fan.