<P> The state of Florida , including Jacksonville , is a huge flat plateau with a high water table , and surface lakes are very shallow . The United States Geological Survey states that the highest point in Jacksonville is only 40 feet ( 12.2 meters ) above sea level , making the area susceptible to flooding and storm surge . Soil composition is primarily sand and clay rather than limestone , so very few sinkholes develop ; however deep , large diameter sinkholes do occur . </P>
<P> The state of Florida , including Jacksonville , is a huge flat plateau with a high water table , and surface lakes are very shallow . The United States Geological Survey states that the highest point in Jacksonville is only 40 feet ( 12.2 meters ) above sea level , making the area susceptible to flooding and storm surge . Soil composition is primarily sand and clay rather than limestone , so very few sinkholes develop ; however deep , large diameter sinkholes do occur . </P>
how high above sea level is jacksonville fl
how high above sea level is jacksonville fl
the highest point in Jacksonville is only 40 feet ( 12.2 meters ) above sea level
the highest point in Jacksonville is only 40 feet ( 12.2 meters ) above sea level