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Mashpee, MA, United States

Garrison S.,Woodard and Curran | Cameron D.,Woodard and Curran | Ramsey J.,Applied Coastal Research and Engineering
Journal of New England Water Environment Association | Year: 2013

The Ogunquit wastewater treatment plant (WWTP) is in a regulated coastal sand dune system and coastal barrier resource system (CBRS), between the Ogunquit River estuary and the Gulf of Maine. The facility has flooded during major historic storm events and faces ever-increasing risks from such events because of rising sea levels and greater storm frequency. Adaptation options to address potential flooding, storm surge, and sea level rise (SLR) were desired. A study assessed the aforementioned risks, along with anticipated changes in regulatory requirements, aging infrastructure, changes in population demographics, and increased competition for funding. This study also outlined mitigation strategies. Regulatory limitations, aging infrastructure, and anticipated SLR impacts suggest that there is no practical long-term solution that would allow the town to continue using the existing WWTP site beyond 2032-2052, given Ogunquit Sewage District's current risk tolerance. Source


Byrnes M.R.,Applied Coastal Research and Engineering | Rosati J.D.,U.S. Army | Griffee S.F.,Applied Coastal Research and Engineering | Berlinghoff J.L.,Applied Coastal Research and Engineering
Journal of Coastal Research | Year: 2013

Historical shoreline and bathymetric survey data were compiled for the barrier islands and passes fronting Mississippi Sound to identify net littoral sand transport pathways, quantify the magnitude of net sand transport, and develop an operational sediment budget spanning a 90-year period. Net littoral sand transport along the islands and passes is primarily unidirectional (east-to-west). Beach erosion along the east side of each island and sand spit deposition to the west result in an average sand flux of about 400,000 cy/yr (305,000 m3/yr) throughout the barrier island system. Dog Keys Pass, located updrift of East Ship Island, is the only inlet acting as a net sediment sink. It also is the widest pass in the system (about 10 km) and has two active channels and ebb shoals. As such, a deficit of sand exists along East Ship Island. Littoral sand transport decreases rapidly along West Ship Island, where exchange of sand between islands terminates because of wave sheltering from the Chandeleur Islands and shoals at the eastern margin of the St. Bernard delta complex, Louisiana. These data were used to assist with design of a large island restoration project along Ship Island, Mississippi. © Coastal Education & Research Foundation 2013. Source

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