Overview

Armoring will increase resiliency against severe wave overtopping caused by hurricane storm surges greater than a 100-year storm event. The structural features of armoring can be in the form of natural or artificial material that is placed on or around a levee or floodwall. Armoring will help reduce scour and protect the integrity of the flood defense structure when confronted with severe wave overtopping from greater than 100-year storm surges.  

Critical Areas Requiring Armoring

• Levee Protected Side Slopes - particularly the inflection point at the toe
• Transition Points between levees & structures
• Solutions will vary with location and will be determined by the overtopping flow rates and velocities

  Armoring Types Investigated

• Grass**
• Soil Cement Treatments**
• Erosion Control Blankets
• Turn Reinforcement Mat**
• Rock Riprap
• Gabions
• Concrete Slope Paving
• Open Stone Asphalt
• Fabric Formed Concrete
• Geogrds
• Articulated Concrete Block (ACB)**

  **USACE commissioned tests of these materials at Colorado State University

  

   

  Turf Reinforcement Mat
   

  

  Articulated Concrete Block