Wetland Impacts and Marsh Restoration Design

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Evolution of marsh ecosystems is a function of estuarine wave and hydrodynamic processes and the cumulative historical impact of human activities.  Applied Coastal personnel conduct detailed analyses of historical data sets (e.g., water levels, weather, storms, landscape changes) to document changes in coastal systems and the primary processes responsible for those changes. Human activities may have a direct impact on marsh changes or exacerbate the natural process of wetland change under rising sea level. These societal influences are often recorded in historical documents and maps that provide insight regarding their influence on wetland ecosystems. Existing data sets and literature provide a time series of events that leads to a more complete understanding of the processes responsible for marsh changes and guides mitigation efforts. Where marsh restoration design is contemplated, numerical models of wave and hydrodynamics provide a cost-effective method for evaluating a range of management and design alternatives. These analyses, in addition to lessons learned from project performance with similar restoration efforts, lead to effective design parameters for marsh restoration.

Capabilities

  • Coastal process analyses
  • Marsh edge and shoreline change analyses
  • Scour and sediment transport analyses
  • Structure and coastal construction impacts
  • Dredging evaluations
  • Wave and hydrodynamic modeling
  • Soil and vegetation analysis
  • Tidal flow analyses
  • Coastal geologic assessments
  • Subsidence and sea-level change analyses
  • Wetland restoration design