Blue Hole Spring is located in an 80 foot diameter pool in Florida Caverns State Park at the head of a 0.45 mile run to Carters Mill Branch, a tributary to the Chipola River. Carters Mill Branch joins the Chipola River river approximately 0.51 miles south of the Chipola River Rise. Turbid water conditions obscured the vent geometry. The maximum depth is approximately 38.5 feet at the vent. There is no surface boil apparent.