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.

The Alapaha River disappears underground in dry seasons, and nobody has ever known where it comes back up. Soon, we will know.

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 Continue reading →