UGA Professors Jaivime Evaristo (isotope data) and Todd Rasmussen (water levels) review two lines of evidence that the Okefenokee Swamp leaks through the underlying limestone into the Upper Floridan Aquifer, and nearby water withdrawals draw more down.

This webinar will explain their recent scientific paper on this subject.

https://wwals.net/?p=69044

This paper is more incentive to pass Georgia House Bill 561 to protect the Okefenokee Swamp from mining, at least on its east side. Georgians, please ask your statehouse delegation to pass HB 561. Floridians, please ask your Georgia friends and relatives to do the same. Here’s how to contact Georgia Statehouse members:

https://wwals.net/about/elected-officials/georgia-house/

Okefenokee Swamp leaks into the Floridan Aquifer, WWALS Webinar 2026-01-15, Prof. Evaristo & Rasmussen

When: 12-1 PM, Thursday, January 15, 2026

Register to join with Zoom:
https://us02web.zoom.us/meeting/register/1z-dW1OESdqPj1W3BhwENA

Suwannee Riverkeeper John S. Quarterman will give a brief introduction.
Questions and answers will be at the end.

Duration: 1 hour Host: UGA Professors Jaivime Evaristo (isotope data) and Todd Rasmussen (water levels)

Jaivime Evaristo is an Assistant Professor, Hydrology and Water Resources, Warnell School of Forestry & Natural Resources, University of Georgia.

My research focuses on understanding how natural and anthropogenic processes influence the exchange of matter and energy across the hydrosphere, geosphere, and atmosphere. My research lies at the confluence of hydrology, geology, and ecology in understanding the spatial and temporal patterns in water partitioning and nutrient (or pollutant) fate and transport.

Todd C. Rasmussen is a Professor emeritus at the Warnell School of Forestry & Natural Resources, University of Georgia.

He specializes in “Fluid flow and contaminant transport through surface and subsurface environments, focusing on the physical, chemical, mathematical, and statistical description and quantification of hydrologic processes.”

Free: This WWALS Webinar is free to everyone.

We recommend you support the work of WWALS by becoming a WWALS member today!
https://wwals.net/donations

Event: Here’s a facebook event so you can encourage others to come to this WWALS Webinar:
https://www.facebook.com/events/867993125588449/

For other WWALS Webinars, see:
https://wwals.net/about/wwals-webinars/

They are usually on the second or third Thursday of the month, from noon to 1PM. After a brief introduction, the speaker has about 45 minutes, with the remaining time for questions and answers and discussion.

They are recorded, so if you miss one, you can see it later on YouTube. Here’s a WWALS video playlist:
https://youtube.com/playlist?list=PLKwQ5xfKf-QxWRGrV9iExlyXQIVnzOtPX&si=0Atnjwrm_ikyV-sh

WWALS Webinars are organized by the WWALS Events Committee; maybe you’d like to join that committee and help.

For more WWALS outings and events as they are posted, see the WWALS outings web page, https://wwals.net/outings/. WWALS members also get an upcoming list in the Tannin Times newsletter.

About WWALS: Since June 2012, WWALS Watershed Coalition, Inc. (WWALS) is an IRS 501(c)(3) nonprofit charity working for a healthy watershed with clean, swimmable, fishable, drinkable water.

Mission: WWALS advocates for conservation and stewardship of the surface waters and groundwater of the Suwannee River Basin and Estuary, in south Georgia and north Florida, among them the Withlacoochee, Willacoochee, Alapaha, Little, Santa Fe, and Suwannee River watersheds, through education, awareness, environmental monitoring, and citizen activities.

Our Watershed: The 10,000-square-mile WWALS territory includes the Suwannee River from the Okefenokee Swamp to the Gulf of Mexico, plus the Suwannee River Estuary, and tributaries such as the Withlacoochee and Alapaha Rivers as far north as Cordele in Georgia, as well as parts of the Floridan Aquifer, which is the primary water source for drinking, agriculture, and industry for millions of Georgia and Florida residents.

Suwannee Riverkeeper: Since December 2016, WWALS is the WATERKEEPER® Alliance Member for the Suwannee River Basin and Estuary as Suwannee RIVERKEEPER®, which is a project and a staff position of WWALS focusing on our advocacy.

Contact: John S. Quarterman, Suwannee RIVERKEEPER®
850-290-2350
wwalswatershed@gmail.com

You can help with clean, swimmable, fishable, drinkable, water in the 10,000-square-mile Suwannee River Basin in Florida and Georgia by becoming a WWALS member today!
https://wwals.net/donations

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