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

Turf work on a levee. Water running off a levee

  • 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 work on a levee.


    Turf Reinforcement Mat

    Placement of concrete mats on a levee.

    Articulated Concrete Block