Florida Coastal Everglades Long Term Ecological Research
Florida Coastal Everglades LTER - Project Information
Project Information

Estimates of groundwater discharge to a coastal wetland using multiple techniques: Taylor Slough, Everglades National Park

Short-term project
Start date: 2008          End date: 2009
Contact person: Rene Price
Funding organization(s):
Southeast Environmental Research Center Everglades National Park-CESI National Science Foundation NASA



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Abstract

This project utilized four independent techniques to identify groundwater and surface water exchange at varying spatial and temporal scales in Taylor Slough of Everglades National Park. The techniques included a water budget, hydraulic gradient, geochemical tracers, and temperature. The diverse methodological approaches confirmed that groundwater discharge was a significant portion of the water budget of Taylor Slough. Groundwater discharge was the dominant process between January 2008 and July 2008, while groundwater recharge was significant between October 2008 and March 2009. Groundwater discharge accounted for approximately 27% of the water input to Taylor Slough over the course of the 19 month study, equivalent to 60% of the precipitation received across the watershed. Water fluxes were higher and more variable closer to the coastline as compared to further upstream. Discharge and recharge rates differed between the water budget and hydraulic gradient methods because they differed in spatial and temporal scales. Although each of the four methods used confirmed the timing of the groundwater-surface water interactions, the temperature and water level measurements were the simplest and least time consuming approach.





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National Science Foundation logo This material is based upon work supported by the National Science Foundation through the Florida Coastal Everglades Long-Term Ecological Research program under Cooperative Agreements #DEB-1237517, #DBI-0620409, and #DEB-9910514. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
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