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Official Website

of the Commonwealth of Pennsylvania

    The .gov means its official.

    Local, state, and federal government websites often end in .gov. Commonwealth of Pennsylvania government websites and email systems use "pennsylvania.gov" or "pa.gov" at the end of the address. Before sharing sensitive or personal information, make sure you're on an official state website. 

    Sinkholes in PA

    PA Geological Survey - Your first stop for PA sinkhole information!
     

    Florida sinkholes

    Florida sinkholes are not totally similar to sinkholes in Pennsylvania but the mechanisms of formation are generally the same.
     
    Florida waters (Link No Longer Available)
     

    Other Info

    The Karst Pages (Link No Longer Available) - Info on dye tracing and general karst aquifer info from Western Kentucky Univ.
     

    References

    Foose, Richard M. (1953) "Ground-water Behavior in the Hershey Valley, Pennsylvania", Geological Society of America Bulletin, v. 64, p. 623-645.
    Kochanov, William. (1999) Sinkholes in Pennsylvania (PDF). Pennsylvania Geological Survey, Educational Series 11.
    Langer, William. (2001) Potential Environmental Impacts of Quarrying Stone in Karst - A Literature Review. U.S. Geological Survey, Open-File Report 01-0484.
    Newton, J.G. (1987) Development of Sinkholes Resulting From Man's Activities in the Eastern United States. US Geological Survey, Circular 968.
    White, William B. (1988) Geomorphology and Hydrology of Karst Terrains. Oxford University Press.