Update 2016-06-22: Dye test into the Dead River Sink: it came back up several days later and eighteen river miles south, in the Alapaha River Rise and Holton Bluff Spring, both on the Suwannee River.
Green Publishing, 16 June 2016, Dye test held for river basins,
The Florida Geological Survey will be conducing a dye test for the Suwannee River Water Management District in the Upper Suwannee/Alapaha River basins later this month. They will introduce dye into the Dead River Swallet (swallets are sinkholes that capture flow) and a swallet that is located on privately owned land. They will also have sampling devices setup at the Alapaha and Holton Creek Rises as well as several locations on the Suwannee River.
Given the expected dilution and the uncertainty of where the dye will re-emerge, a significant amount of dye is being deployed and there is a possibility that visible dye may be seen in various water wells, a spring and/or Suwannee River.
If anyone sees red or green in their well or in a spring or the Suwannee River, they are asked to collect a sample of the water in a clean glass jar and place it in their refrigerator and call the Florida Geological Survey at (850) 617-0336.
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