MULTIPLE COASTAL HAZARDS OF PUERTO RICO
Shoreline erosion, both long-term due to sea-level rise and short-term due to storms, is only one of many hazards affecting coastal areas. Other hazards include tsunami, river flooding, earthquake- and rain-induced slope failure, and landslides. An integrated assessment of all potential coastal zone hazards is necessary for a complete understanding of shoreline response to geologic events. This study focuses on the multiplicity of coastal geologic hazards and their identification. Coastal Zone Hazard Maps were prepared for Puerto Rico depicting coastal geology and geomorphology, beach characteristics, offshore (inner shelf) characteristics, and hazard potential from such events as flooding, overwash, erosion, earthquake damage, and landslides. In addition, special consideration was given to areas where shoreline engineering or dense development significantly increases the overall vulnerability of a coastal stretch. A detailed description of Puerto Rico's shoreline with information on the coastal hazards of each shoreline reach, and including an extensive bibliography, can be found in “Living With the Puerto Rico Shore” (Duke University Press, 1995.