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Ompompanoosuc/West Branch

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Record:119Type:CulvertSgaID:100021000209111
  Town:ThetfordVOBCIT struct_num:---
    LocalID:

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Geomorphic and Fish Passage Data  
General  
Floodplain filled by roadway approaches Partially
Structure is located at significant break in valley slope No
Culvert slope as compared with channel slope is significantly Lower
Upstream  
Obstructions at the opening of the structure None
Steep riffle present immediately upstream of structure No
If channel avulses, stream will Cross Road
Estimated distance avulsion would follow road ft.
Angle of stream flow approaching structure Channelized Straight
Downstream  
Water depth in culvert (at outlet) 0.2 ft.
Culvert outlet invert Cascade
Backwater Length (measured from outlet) ft.
Outlet drop (invert to water surface) 0.4 ft.
Pool present immediately downstream of structure Yes
Pool Depth at point of entry ft.
Maximum pool depth ft.
Downstream bank heights are substantially
higher than upstream bank heights 		Yes