Comments:
Entire segment straightened and deepened throughout the neighborhood. No buffer throughout entire reach segment and multiple stormwater inputs. A high degree of sedimentation was noted during the substrate sampling, where sand represents 66% of the substrate. The high degree of substrate embededness, combined with the low baseflow conditions typical of urbanized watersheds, has led to degraded habitat conditions (RHA score was poor). Due to the stream type departure (C to E), the physical stability of the reach was also assessed as poor. However, with the exception of the areas of bank erosion noted above, the channel is in a quasi-stable state (despite stage II of channel evolution) due to the cohesive clay soils along the channel boundaries, and the limited upslope sediment supply. The likelihood of continued channel incision is low due to the hardpan boundary noted beneath the alluvial substrates. This reach may maintain its current channel geometry for a many years until additional disturbance from upslope (increased stormwater runoff) or failure of the channel boundaries triggers further vertical adjustments.