Sinkholes in Hernando County, Florida

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Sinkholes in Hernando County, Florida

• Photos taken by Tom Scott, Florida Geographic
  Survey
• http//www.dep.state.fl.us/geology/geologictopics/
  jacksonsink.htm

Brett Buff GIS in Water Resources November 25,
2008
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Objective

• Investigate the relationship between sinkholes
  and water

Project Location Hernando County, Florida
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Sinkholes

• Sinkholes are common in Florida
• Hydrogeology is an important factor in their
  formation
• Formed from erosion processes associated with
  acidic water and limestone
• Can form when water table changes drastically
• Can create underground drainage systems

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Southwest Florida Water Management District
(SWFWMD)
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Future Work

• Create Sinkhole Probability Map
• Analyze DEM from Hernando County using ArcHydro9
  Tools

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Conclusion

• Sinkholes are more likely occur where water
  tables fluctuate more frequently and rapidly then
  normal
• Increase in development gt Increase in
  groundwater removal gt Increase sinkhole
  formation

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Data Sources

• USGS
• Southwest Florida Water Management District
• Florida Department of Environmental Protection
• Florida Geological Survey

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Eagles Nest Sinkhole
Located in Northwest Hernando County
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330-Foot-Deep Sinkhole In Guatemala City
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Questions???
Some more pictures of sinkholes in Florida