• The Historic Entrance of Mammoth Cave

    Mammoth Cave

    National Park Kentucky

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  • Alert - Mammoth Cave is in an area highly endemic to histoplasmosis

    Histoplasmosis is a serious infection caused by breathing in spores of a fungus often found in bird and bat droppings. Infants and immunocompromised persons are especially vulnerable. Click the link for more information. More »

Groundwater

Nature and Science

A cave stream

Mammoth Cave Aquifer
Flow through the Mammoth Cave Karst aquifer can be very rapid, on the order of 1000's to 10,000's of feet per day. Contaminants entering the karst aquifer can thus be rapidly transported, unfiltered through the conduit system. The karst aquifer is very dynamic, that is, it responds nearly instantaneously to rainfall. Aquifer stage can rise tens of feet in a matter of hours, with numerous records showing stage rises of over 100 feet over the course of one day. Also, chemical and bacteriological properties of the groundwater can change dramatically following rainfall events.

Did You Know?

Canoes on Green River

The Green and Nolin Rivers course more than 30 miles through Mammoth Cave National Park, offering hours of boating, canoeing, fishing, and floodplain camping.