HSDRRS Armoring


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