Comments:
Some areas of riffle-pool, some of plane bed. Plane bed type chosen to reflect departure. The reference stream type for this reach appeared to be a C4 Riffle-Pool, but due to channel incision, the reach experienced a stream type departure to a B4c Plane Bed type. Floodplain access was limited, although old channels and/or flood chutes on the upper terrace could provide additional floodplain access and relief from high flows. Incision appeared to be historical, as did channel widening. Current channel adjustments appeared to be aggradation and major planform. Bank erosion, islands, and multiple mass failures were indicators of these adjustments with significant contributions to sediment loads. Also contributing sediment were rejuvenating tributaries in the reach and gullies from stormwater inputs. Shelburne Falls at the downstream end of the reach provided grade control.