Milone & MacBroom was retained by the Vermont Department of Environmental Conservation to perform dam removal and channel restoration design for the Dufresne Pond Dam. Project tasks included survey, hydraulic modeling, sediment transport analysis, scour analysis, preliminary and final design, cost estimates, and construction inspection. The project was a joint venture between the Vermont Agency of Natural Resources and the Vermont Agency of Transportation.
The Dufresne Pond Dam consisted of an earthen embankment with a concrete ogee main spillway and downstream pavement made of large marble slabs. The dam had very little freeboard and water overtops and uncontrolled seepage was taking place at the structure and the lower level outlet was not operable.
The “Dufresne Pond” impoundment sits on 11-acres of land and extends approximately 2,000 feet upstream during normal flows. The impoundment is bisected by an active railroad line and bordered by vegetated wetlands and snags that establish niche aquatic-terrestrial habitat. The proposed conditions included four alternatives for dam removal and combinations of varying levels of impoundment sediment removal, different stable channel dimensions, and different channel platforms that achieved project objectives.
The firm provided the following services: SurveyEngineering Hydraulic Analysis Scour AnalysisConstruction Inspection Public Outreach
To learn more about this project, please contact the Project Manager Roy Schiff, Ph.D., P.E.
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