Preliminary Evaluation of Critical Wave Energy Thresholds at Natural and Created Coastal Wetlands

PURPOSE: This technical note presents an evaluation of the wave climate at eight natural and created coastal wetland sites in an effort to identify the existence of critical wave energy thresholds for long-term marsh stability. This information could be used to help determine the minimum degree of protective structures necessary for successful establishment of created or restored coastal wetlands. Davis and Streever (1999) noted that some structures designed to protect dredged material wetlands may be overbuilt. If adequate protection could be provided by smaller, lower elevation structures, increased wetland functionality could be achieved at a considerable cost savings.