Title:
Hydraulic Evidence For Vertical Flow From Okefenokee Swamp To The Underlying Floridan Aquifer In Southeast Georgia
Hydraulic Evidence For Vertical Flow From Okefenokee Swamp To The Underlying Floridan Aquifer In Southeast Georgia
Author(s)
Kitchens, Susannah
Rasmussen, Todd C.
Rasmussen, Todd C.
Advisor(s)
Editor(s)
Hatcher, Kathryn J.
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Abstract
rapid response is observed between water
level fluctuations in the Okefenokee Swamp and water levels
in the underlying Floridan Aquifer. A lag of approximately
one month is common, and a hydraulic diffusivity of 3.83 x
10-3 m2 s4 best matches the calculated aquifer response to the
swamp water level perturbations. The magnitude of leakage
between the swamp and the aquifer is uncertain because of a
lack of knowledge about the specific storage coefficient in the
aquitard separating the swamp and the aquifer which has not
been explicitly measured. An intermediate value of specific
storage within the likely range of values results in a downward
vertical flow of 1.2 meters of water per year. This
induced recharge can significantly alter the natural water
balance within the swamp. Such a large loss of water from
the swamp may be responsible for observed pH and water
level changes, and increased heavy metal accumulations in aquatic organisms in the swamp.
Sponsor
Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, The University of Georgia, Georgia State University, Georgia Institute of Technology
Date Issued
1995-04
Extent
Resource Type
Text
Resource Subtype
Proceedings