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West Branch Little River

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Record: 24    Segment ID: M08.S1.01-    Stream Name: Big Spruce Brook

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Channel Bed and Planform Changes  
5.1 Bar Types  
  Mid Bar 2
  Point Bar 0
  Side Bar 9
  Diagonal Bar 0
  Delta Bar 0
  Island Bar 0
5.2 Migration Features  
  Flood Chutes 2
  Neck Cutoffs 0
  Channel Avulsions 0
  Braiding 0
5.3 Steep Riffles and Head Cuts  
  Steep Riffles 1
  Head Cuts 0
  Tributary Rejuvenation No
5.4 Stream Ford or Animal Crossing No
5.5 Channel Alterations  
  Straightening Straightening
  Straightening Length 646 ft.
  Dredging None

Comments:
Entire segment channelized, roads along both banks causing entrenchment and STD. Big Spruce likely used to enter West Branch upstream of current confluence. This made defining old valley walls difficult, as there was no old valley for Big Spruce in this area (we designated the road as the old valley wall on the RB). No RAF was noted in the field, but both banks have been built up with fill for the roads so incision ratio was very high (considered Rt 108 road to be RAF) since we had an F stream type it must be incised. We did not include this as a human elevated floodplain though since the roads are acting as the new valley walls (as per the protocol addendum). Overwide channel may be due to channelization and not necessarily due to stream widening.