Bathtub Spring has an oval-shaped pool measuring 12 ft (3.7 m) east to west and 7 ft (2.2 m) north to south with a maximum depth of 4 ft (1.2 m). A single vent discharges from exposed limestone on the north side of the pool. The limestone pool bottom is covered with algae in some places. The spring water is clear blue. The spring run averages 6 ft (1.9 m) wide, 1.5 ft (0.5 m) deep, and flows 10 ft (3.1 m) southwest, under a land bridge, to the Suwannee River. Exposed limestone rises 8 ft (2.5 m) above the pool surface and the privately-owned surrounding area is forested. At the intersection of the spring run and the Suwannee River, a concrete retaining wall impedes the natural flow of the spring run.
From the boat landing at the SR 51 bridge over the Suwannee River south of Luraville, travel downstream approximately 6.1 miles (9.8 km). The spring will be along the north bank.