Erosional Process and Its Potential Control at Thurmond Lake
Ferguson, Bruce K.
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Thurmond Lake is a Corps of Engineers reservoir that, like many other reservoirs, suffers from eroding shorelines. A study of Thurmond found that the complex shoreline configuration controls the occurrence of fetch and concentration of wave energy, and thus of erosional process. Bluff recession, which is the visible and damaging feature of shore erosion, is a consequence of downcutting of the bench. Halting bluff recession requires combating undercut at the bluffs base. Alternative structural and. bioengineering stabilization measures are described and evaluated. General guidelines for shoreline installations are given, including the most reliable months for access, the elevation required to protect from wave "runup", the requirement of wings and toes to prevent flanking and undercutting, and selection and installation of plants for bioengineering.