World Sinkhole Map
USA Sinkhole Map
The map shows karst areas of the continental United States having sinkholes in soluble rocks (carbonates and evaporites), as well as insoluble volcanic rocks that contain sinkholes.
The volcanic bedrock areas contain lava tubes that are voids left behind by the subsurface flow of lava, rather than from the dissolution of the bedrock. Hot spots of sinkhole activity are also shown in areas of greater susceptibility. Source: Progress toward a preliminary karst depression density map for the conterminous United States.
Florida Sinkhole Maps
Florida Sinkhole Prone Area By Zip Code
Florida Sinkhole Prone Area By Counties
Data Source: Florida Department Of Environmental Protection