Tag Archives: sinkhole

USGS warns Withlacoochee River already leaks into Floridan Aquifer

There’s a reason Valdosta’s water wells are 400 feet deep. Its earlier, shallower wells were sucking up Withlacoochee River water that still leaks into groundwater. Should we risk a fracked methane pipeline digging under that same river and possibly causing more sinkholes and underground movement of contaminants, some perhaps coming from the pipeline itself or its demands for pressure testing water?

Sustainability of Ground-water Resources, by William M. Alley Thomas E. Reilly O. Lehn Franke, 1 January 1999, U.S. Department of the Interior, U.S. Geological Survey – Publisher. In Box E on Page 63:

The Connection Between Surface-Water Quality and Ground-Water Quality in a Karst Aquifer


Figure E-1. Estimated percentage of Withlacoochee River water in ground water in the Upper Floridan aquifer, June 1991. (Modified from Plummer and others, 1998.)
The Upper Floridan aquifer, which is the sole source of water supply for Valdosta, Georgia, and much of the surrounding area, receives large volumes of direct discharge from the Withlacoochee River through sinkholes in the streambed or off-channel. A highly interconnected conduit system has developed Continue reading →

Springs, shoals, and pipeline: Withlacoochee and Suwannee Rivers 21 Sep 2014

Update 5 September 2014: Join us on the rivers even if you’re not yet a member, and many things have happened in the past few weeks: see new post.

Update 25 August 2014: Chris Mericle, our local host for this outing, spoke to the Hamilton County Commission Tuesday 19 August 2014 about what he’s trying to protect from the pipeline.

Paddle past springs, shoals, sinkholes, and where Sabal Trail proposes a fracked methane pipeline to cross the Withlacoochee and Suwannee Rivers in Florida: the WWALS September Outing. Spend five Sunday hours on about ten miles of two of our fabulous southern blackwater rivers.

Meet 10AM Sunday September 21st at the CR 143 Ramp at mile 8 on the Withlacoochee River, 30.449111, -83.221352 or 30° 26′ 56.796″ N 83° 13′ 16.8666″ W. Take out at Anderson Spring, just past I-10, 30° 21′ 10.6806″ N 83° 11′ 21.7314″ S

This event is FREE! All we ask is that you are a current member of WWALS Watershed Coalition. If not, its easy to join online today at /donations/. Continue reading →

Video: Withlacoochee River and springs where Sabal Trail pipeline would cross

Chris Mericle’s introducation says this video:

shows some of the springs, sinkholes, and other karst features that lie in close proximity to the proposed Sabal Trail gas pipeline where it crosses the Withlacoochee River in Hamilton and Madison County, Florida.

Including active sinkholes right next to the proposed pipeline route. And a karst window a couple of hundred feet from the pipeline.

Here’s the video:

The video is about the part of the Withlacoochee River where Continue reading →

Water and property rights more important than methane pipeline profits

This is a long version of the op-ed sent to many newspapers in WWALS’ watersheds; there is also a short version. -jsq

Protesters drove as far as nine hours to Leesburg, GA July 10th, where Spectra Energy lost its eminent domain demand for its Sabal Trail 36-inch, hundred-foot right-of-way natural gas pipeline, and local landowners countersued. Spectra hobbled back to Houston, Texas bound by strict conditions for surveying that one Mitchell County property, and bound to haunt south Georgia again for a trespass jury trial.

The ensuing flurry of newspaper op-eds by Spectra’s Andrea Grover plus a page-long Sabal Trail interview in the Valdosta Daily Times (VDT), didn’t mention numerous Sabal Trail downsides. Continue reading →

Water and property rights over methane pipeline profits

This is an op-ed submission sent to many newspapers in WWALS’ watersheds and beyond. There is also a longer version. -jsq

Protesters drove up to nine hours to Leesburg, GA July 10th, where Spectra Energy lost an eminent domain demand for its Sabal Trail 36-inch, hundred-foot right-of-way natural gas pipeline, and local landowners countersued. Spectra hobbled back to Houston, Texas, bound by strict conditions for surveying that one property, and bound to haunt south Georgia again for a trespass jury trial.

Spectra bragged in op-eds about 50 public meetings, never mentioning overwhelming public opposition in Moultrie, Valdosta, Clyattville, Madison and elsewhere to that gash through our fields, forests, and wetlands, and under our Withlacoochee River twice.

Sabal Trail’s air quality permit application with Georgia’s Environmental Protection Division met immediate 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:

Continue reading →

Now at VSU: Aquifers, sinkholes, and ground scans –Don Thieme @ WWALS

Update 2019-04-02: Videos.

Moved to VSU, University Center, Dogwood Room! Prof. Don Thieme of VSU will speak about underground water issues at the October WWALS board meeting in Wednesday October 9th at 7:30 PM in Valdosta. Join the facebook event or come as you are.

Here’s the letter Prof. Thieme and two other VSU professors wrote to the Air Force about sinkholes and subsidence on the proposed Moody Family Housing in Lowndes County, which also turns out to be in an aquifer recharge zone.

Here’s VSU’s campus map and here’s a google map: Continue reading →

Aquifers, sinkholes, and ground scans –Don Thieme @ WWALS

Moved to VSU, University Center, Dogwood Room!
Prof. Don Thieme of VSU will speak about underground water issues at the October WWALS board meeting in Wednesday October 9th at 7:30 PM in Adel at the IHOP, 1200 W 4th Street. Valdosta.

Here’s the letter Prof. Thieme and two other VSU professors wrote to the Air Force about sinkholes and subsidence on the proposed Moody Family Housing in Lowndes County, which also turns out to be in an aquifer recharge zone.

It’s an open board meeting anyone can attend for the business part, as well. Here’s the agenda:

Agenda WWALS Board Meeting
7:30 pm October 9, 2013
IHOP, Adel GA
  1. Call to Order, Welcome and Introductions
  2. Speaker: Don Thieme, VSU geologist. Topic: Aquifers, sinkholes, and ground scans.
  3. Agenda Review: Additions and Changes
  4. Review and Approval of Minutes of September Board Meeting
  5. Future Meetings and Events
    1. Monthly outing (fourth Saturday): October 26, 2013 at Banks Lake near Lakeland.
    2. Monthly board meeting (second Wednesday): November 13 Continue reading →