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.
|