Poster Number 23
See more from this Division: General Discipline Sessions
See more from this Session: Geomorphology (Posters)
Abstract:
One of the ten, Pearce Creek is a small tributary that was selected to assess channel stability over a 10-yr period. Geomorphically, the area is characterized by broad valleys with terraces in association with floodplains and alluvial/colluvial soils. Comparative analysis of aerial photography and field observations suggest that the environmental impact of recent military activities have generally been minimal as opposed to the historical impact of logging (conversion of forest to grasslands) and recreational activities (e.g., dirt bikes). In fact, most streams exiting the impact area are now knicked due to higher velocity runoffs. Similarly, Pearce Creek is also knicked but is only slightly enriched with meandering channels and riffle pool morphology. The stream also has a low gradient that, in turn, causes the stream to have wider and less rugged valleys and a relatively average sinuosity. Major stream change is restricted to a few areas proximal to human inhabitants.
See more from this Division: General Discipline Sessions
See more from this Session: Geomorphology (Posters)