The park draws its name from Edward Ball, the DuPont family financial manager who sold the park lands to the state of Florida and its contained Wakulla Springs, one of the world's largest and deepest first-order freshwater springs and an exit point of the Floridan Aquifer. Wakulla Springs' highest outflow has been measured at 860,000 US gallons per minute (54 m³/s). The spring's average flow is about 400,000 US gallons per minute (25 m³/s). The opening of the spring is 180 feet (55 m) down, through which cave divers, especially those of the Woodville Karst Plain Project have explored many miles of its underwater tunnels. The spring gives rise to Wakulla River which flows several miles to the south where it empties into the Gulf of Mexico.