Watershed and Rapid Geomorphic Assessment of Bay Brook and Centennial Brook in Vermont By: Abby Boak, Sarah Booker, Kate Connelly, Cara Massameno, and Rosalie Wilson

OUTLINE Background Methodology Results & Discussion Conclusions

Background: Impairment Stream Centennial Brook, Burlington, VT Winooski Watershed Impaired due to urban runoff and high impervious surfaces Poor biological condition and high habitat degradation Drainage area = 1.2km 2

Background: Attainment Stream Bay Brook, Colchester, VT Lake Champlain Watershed Supports wildlife and habitat Drainage area = 1.2km 2

Reach Delineation: Centennial Centennial Brook Change in sinuosity Change in dominant bed material Converging tributaries

Reach Delineation: Bay Bay Brook Change in channel slope Change in dominant bed material Culvert/road

Methodology Followed SGA protocols: Phase 1 and Phase 2 (steps 6 & 7) GPS for reach delineations Digital orthophotographs, aerial photos, and topographic maps Terrain Navigator SGA Access Database

RESULTS: Watershed size vs. Condition Index

Rapid Habitat Assessment vs. Rapid Geomorphic Assessment

Rapid Habitat Assessment vs. the Condition Index

Rapid Geomorphic Assessment vs. Condition Index

Condition Scores for Bay Brook and Centennial Brook

Rapid Habitat Assessment Scores for Bay Brook and Centennial Brook

Rapid Geomorphic Assessment Scores for Bay Brook and Centennial Brook

Report Scores for Channel Adjustment in Bay Brook and Centennial Brook

History of Centennial Brook: Meander Migration

Pollution in Centennial Brook Looking at previous research on Centennial Brook, performed by McIntosh (2004), it was found that pollution in the stream was much higher compared to the National Median Concentration found in stormwater

Conclusions Centennial Brook is listed as an impaired stream and will undergo restoration efforts. Impairment is caused by stormwater run-off contributing to a less suitable habitat for wildlife. The stream is not greatly affected by human impacts such as channalization, dredging, or point source pollution. The shape of the stream is maintained by the Main St. and East Campus Detention Ponds. The history of Centennial Brook indicates meander migration.

THANK YOU…. Professor Breck Bowden Professor Alan McIntosh Bill Gill Doug Burnham and Mike Klein