ERDC/CHL CHETN-II-47
March 2004
Figure 17. Hot spot locations along the Dade County, FL, fill project (courtesy of Tom Martin, Jacksonville
District)
devices. A submerged nearshore reef ball breakwater will be constructed at this site in the near future
to lower the wave energy and soften focusing of waves by the irregular bottom caused by natural
coral reefs prevalent in the nearshore at this site. At the 32nd Street site, three emergent nearshore
coral rock rubble-mound breakwaters were constructed in 2002, at the hot spot location where the
shoreline orientation changes from north/south to more northeast/southwest. Tombolos (a sand
tongue attachment between the breakwater and beach) were constructed by trucking fill sand from
further down the beach, back updrift and placing it behind each of the breakwaters. At the present
time the breakwater/tombolo configuration has stabilized the hot spot associated with the local
shoreline orientation change. The natural coral reef in this area enhances wave focusing resulting in
20
Previous Page
