Portions of the following information were taken from Florida Geological Survey Bulletin 66.

Horseshoe Spring is located on private property approximately 2.8 miles southwest of the town of Aripeka on central Florida’s Gulf Coast. It is approximately 0.8 miles due east (inland) from Horse Island.

Description - Horseshoe Spring is so named because of its distinct horseshoe-shaped spring pool and upper spring run section. The spring emerges from an elongated, curved fissure in the limestone that measures 16.6 ft deep and is 100 ft long. The spring bottom is limestone with a thin layer of dark silt. The water was tannic and slightly turbid in March 2003. The spring run begins flowing eastward, then it curves around and flows northwest, creating a narrow peninsula of land between the upper spring run section and the spring pool. There are numerous karst features along the bottom of the uppermost portion of the spring run. The spring run meanders northwest through marsh 0.8 miles into Fillman Bayou. Land east of the spring is heavily forested, and land to the west is open marsh.