Research Insights
Multi-Tracer Investigation of Hydraulic Connectivity between the Okefenokee Swamp and the Upper Floridan Aquifer
We propose to investigate whether water from the Okefenokee Swamp flows into the underlying Upper Floridan Aquifer—a key source of drinking water for communities in southern Georgia and northern Florida. While past studies hinted at a possible connection, no one has directly compared the swamp’s water with nearby groundwater using modern scientific tools. This project will collect water samples from the swamp, nearby rivers, and underground wells, and test them for natural “tracers” like stable isotopes, gases, and chemicals. These tracers help reveal where the water came from and how long it’s been underground. Early results suggest swamp water may already be entering the aquifer. Confirming this connection would help scientists, water managers, and other stakeholders better understand how the aquifer gets replenished and how to protect it. In addition to testing whether the swamp recharges the aquifer, we will also evaluate whether upward gradients exist—suggesting that groundwater may discharge into the swamp under certain conditions. Our findings will support improved conceptual and numerical models that can forecast hydrological responses to mining or other withdrawals.
Funder: Chemours Company
Amount: $259,242
PI: Jaivime Evaristo, Warnell School of Forestry & Natural Resources