University of Vermont

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Gund Tea Series - Mandar Dewoolkar: Stability Assessment of Streambanks in Vermont

Mar 9, 2018
12:00 pm to 1:00 pm
Johnson House 101

Streambank erosion processes in Vermont were assessed at multiple scales. At the site-specific scale, we performed detailed bank erosion and slope stability computations. For this, fourteen streambanks along two waterways were studied. One cross section at each river was instrumented with water pressure transducers and tilt switches to measure changing water levels and bank activity. Data on spatial and temporal variations in bank cross sections, properties of streambank soils, and groundwater and stream levels were collected and analyzed using computer programs for evaluating bank stability. At the corridor-level, an UAS (Unmanned Aircraft System - a drone) was used to assess streambank retreats. The data from the UAS were validated using data from a terrestrial LiDAR and traditional surveying. This presentation will include representative results and discussion of advantages and limitations of the various approaches used.

For more information, contact Nora Shahoud at 656-2906 or

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