Sand Point Revetment Environmental Assessment, Pictured Rocks National Lakeshore, Michigan; National Park Service
Overall project focused on developing an environmental assessment for the removal of a revetment at Pictured Rocks National Lakeshore and restoration of natural littoral processes at the site. The revetment was installed in the 1990s when Lake Superior experienced high lake levels and the park headquarters, a historic U.S. Coast Guard station, was threatened. Tasks included design of the alternative for restoration of Sand Point through removal of the existing degraded revetment and restoration of the natural processes at the site through sand replenishment of Sand Point as well as replacement of natural vegetation. The sand replenishment design was conducted using hydrodynamic model information conducted for the site. The Surface water Model System , in particular the Coastal Modeling System, was used to execute two models (CMS-Flow and CMS-Wave) in a linked manner. CMS-Flow, a finite-volume numerical model, computed both hydrodynamics (water levels and currents), and sediment transport as both bed load and suspended load, and CMS-Wave, a two-dimensional wave model, simulated wave diffraction and reflection in Lake Superior during 2-, 10-, and 25-year storm events. The project also included supporting the National Park Service with internal and public scoping meetings, and comments analysis.