Tag Archives: groundwater

Two GA-EPD water advisories about US 84 widening project

Thirty-day comment periods closing 12 August 2015 to comment on the US 84 widening project, say 300x175 Greasy Branch, CSX Railroad, Upper Suwannee River Watershed, in Two GA-EPD water advisories about US 84 widening project, by John S. Quarterman, for WWALS.net, 13 July 2015 two Public Advisories from GA-EPD Watershed Protection Branch. One is in the Satilla River watershed, about “two existing open water ponds (outflowing into jusrisdictional[sic] wetlands associated with Lees Branch)”: those ponds are next to the groundwater-contaminating CSX railyard in Waycross. One is in the Upper Suwannee River watershed, about “three existing open water ponds (outflowing into jusrisdictional[sic] waters associated with Greasy Creek and the CSX railroad)”. Maybe the Southern Environmental Law Center letter to GDOT and the U.S. Army Corps of Engineers got some results, although these advisories are from a different state agency.

The Upper Suwannee one starts at Continue reading →

Cook County, GA ground water depletion –USGS

In USGS’s web page on Groundwater depletion:

The chart below shows monthly-mean water levels from 1964 to 2003 for a well in Cook County, sourthwest Georgia. The well is used for irrigation and public- supply purposes and offers a good visual representation of long-term groundwat er declines due to excessive pumping. [d]—data for the chart is available.

West-central Florida— Continue reading →

Avoid our area –Florida’s Suwannee River Water Management District to FERC

What they told FERC today was more subtle than just “avoid our area”, but after the Sabal Trail methane pipeline avoid karst limestone, any unconfined areas of our Floridan aquifer, caves, springs, wetlands, drilling under rivers, blasting, or using groundwater for testing pipes or disposing of it afterwards, where can that pipeline go?

The Suwannee River Water Management District (SRWMD) covers the Florida parts of WWALS’ watersheds, and our Withlacoochee River is named in the SRWMD comments. Unlike Georgia’s Suwannee-Satilla Water management District, SRWMD has state funding and staff that produced some very interesting comments.

This is the first I’ve heard of this point about source and disposal of testing water: Continue reading →

Videos: Aquifers, sinkholes, and groundscans –Prof. Don Thieme

We had to move to a larger room, so many attended this groundwater talk at VSU (about 90). Plus a guest appearance by SAVE.

Crowded small room Larger Magnolia Room

Coastal Plain Surficial Deposits, Groundwater Resources, and Recent Subsidence in south Georgia by Prof. Donald M. Thieme @ VSU for WWALS 2013-10-09 Here are Dr. Donald M. Thieme‘s slides in PDF, with his longer title:

Coastal Plain Surficial Deposits, Groundwater Resources, and Recent Subsidence in south Georgia

While we are lucky to have abundant groundwater, both from the Upper Floridan Aquifer 100 feet below us trapped in Eocene limestones and from shallow groundwater with its karst features, nonetheless overpumping has caused falls in the level of the aquifer (about 0.6 feet a year at Valdosta), resulting in rapid loss of shallow groundwater, plus surface water that enters and often contaminates the aquifer through those karst features.

Summary: abundant groundwater from Upper Floridan aquifer and shallow groundwater Summary: Fall in level of upper Floridan aquifer is primary cause for....

Sometimes those karst features subside and manifest as sinkholes like the one that ate Snake Nation Road in Lowndes County and others that can develop slow (many years) or fast (weeks or minutes).

Subsidence Problems in south Georgia and north Florida Snake Nation Road sinkhole

There were also many questions, starting with what water do personal wells reach? Also including a brief history of Valdosta well drilling from artesian to hundreds of feet down, and a sinkhole in a garage in Lowndes County, should local governments require sinkhole insurance (including mention of Moody AFB subsidence and Florida citrus growers pumping so much water it causes sinkholes). I also introduced the WWALS board members present: Gretchen Quarterman (Treasurer and videoing), Bret Wagenhorst (Outings), Heather Brasell (Secretary), Dave Hetzel (President), April Huntley (Director), me (Vice President), and Chris Graham (Member); plus a brief summary of WWALS events and outings. Here’s a video playlist:

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Floridan Aquifer VSU class paper

Found by Chris Graham. I added the illustrations and the table. -jsq

THE FLORIDAN AQUIFER

by Sandra McCullough
Sandra McCullough lives in Valdosta, Georgia. She is a Speech Communications major and has an interest in the Environment and Humankind’s interaction with the Environment. Sandra plans to continue her education and become a teacher of public speaking. The topic to be discussed here is the Floridan Aquifer.

The Floridan aquifer system is very important to a large number of people, despite general lack of knowledge of or about it. The Floridan aquifer underlies all of Florida, south Georgia, and parts of both Alabama and South Carolina.’ This particular aquifer system is one of the major sources of ground-water in the United States. For this reason and more, studies of its function have been done for years. These studies as well as other findings will be discussed in this paper.

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