All findings from the field reconnaissance are shown on the Existing Conditions plans. In general, all stream channels on the Towson University campus indicate varying states of modification or degradation, providing little habitat for terrestrial and aquatic habitat. Channel modification includes straightening the channel, lining it with concrete, or filling in the floodplain for development. Channel degradation is largely the result of impervious surfaces such as roads, buildings and parking lots which have been steadily increasing over the past sever al decades. Since much of the surface in Towson is paved, excessive runoff is generated during precipitation events.
Higher discharges carry more energy and accelerate channel erosion and instability.
This process generally continues until the channel enlarges and has the capacity to convey these higher discharges. Recommendations to mitigate channel degradation, improve water quality and enhance both terrestrial and aquatic habitat are presented in the Restoration Concept Plans for each subwatershed. Proposed restoration concepts include a range of improvements from stabilizing channel invert elevations, to reshaping channel geometry, stabilizing banks, removing accumulated debris and concrete channel lining, re-vegetating the channel banks, and reforestation of the riparian corridor. Additional recommendations include the implementation of stormwater best management practices to improve water quality. Recommendations are prioritized based on a ranking system that incorporates the findings from the existing conditions study and the potential for and benefit of restoration.