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Watershed and Rapid Geomorphic Assessment of Bay Brook and Centennial Brook in Vermont

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.

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Watershed and Rapid Geomorphic Assessment of Bay Brook and Centennial Brook in Vermont

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  1. 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

  2. OUTLINE • Background • Methodology • Results & Discussion • Conclusions

  3. 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 = 1.2km2

  4. Background: Attainment Stream • Bay Brook, Colchester, VT • Lake Champlain Watershed • Supports wildlife and habitat • Drainage area = 1.2km2

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

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

  7. 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

  8. RESULTS:Watershed size vs. Condition Index

  9. Rapid Habitat Assessment vs. Rapid Geomorphic Assessment

  10. Rapid Habitat Assessment vs. the Condition Index

  11. Rapid Geomorphic Assessment vs. Condition Index

  12. Condition Scores for Bay Brook and Centennial Brook

  13. Rapid Habitat Assessment Scores for Bay Brook and Centennial Brook

  14. Rapid Geomorphic Assessment Scores for Bay Brook and Centennial Brook

  15. Report Scores for Channel Adjustment in Bay Brook and Centennial Brook

  16. History of Centennial Brook: Meander Migration

  17. 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

  18. 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.

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

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