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

2. OUTLINE
Background
Methodology
Results & Discussion
Conclusions
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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
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4. Background: Attainment Stream
Bay Brook, Colchester, VT
Lake Champlain Watershed
Supports wildlife and habitat
Drainage area = 1.2km2
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5. Reach Delineation: Centennial
Centennial Brook
Change in sinuosity
Change in dominant bed material
Converging tributaries
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6. Reach Delineation: Bay
Bay Brook
Change in channel slope
Change in dominant bed material
Culvert/road
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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
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8. RESULTS: Watershed size vs. Condition Index
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9. Rapid Habitat Assessment vs. Rapid Geomorphic Assessment
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10. Rapid Habitat Assessment vs. the Condition Index
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11. Rapid Geomorphic Assessment vs. Condition Index
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12. Condition Scores for Bay Brook and Centennial Brook
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13. Rapid Habitat Assessment Scores for Bay Brook and Centennial Brook
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14. Rapid Geomorphic Assessment Scores for Bay Brook and Centennial Brook
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15. Report Scores for Channel Adjustment in Bay Brook and Centennial Brook
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17. History of Centennial Brook: Meander Migration
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18. 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
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19. 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.
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20. THANK YOU…. Professor Breck Bowden Professor Alan McIntosh Bill Gill
Doug Burnham and Mike Klein
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