•Raster elevation map of area covered by combined LiDAR data sets. •Brown areas are high ground, dark green are near sea level. •Main limestone ridge, barrier islands are IHRC data. •Area from Turkey Point south and NW lake region from USACE-CSOP data. •83% of land surface remains above mean high tide. •Coastal plain and marshes inundated at high tides. •Mangrove swamps deepen, coastal vegetation migrates upslope. •Beach erosion increases. •Levees like the L-31E expected to restrict encroachment -delaying salt water intrusion in south Miami-Dade. •Southern Everglades not protected by equivalent structure.