From their website:
Juniper Springs was an ideal place for a public recreation area, but there was one problem. The site was located miles from the nearest source of electricity and the cost of running lines out through the national forest to the new park was prohibitive. The millions of gallons of water that rush from the springs each day, however, soon sparked an idea for a solution.
As work went forward on the recreation area in 1935-1936, the CCC came up with a plan to generate electricity while enhancing the scenic beauty of the springs.
They built the structure known today as the millhouse or old mill at the foot of the main pool of Juniper Springs. Water flowing from the springs was channeled into a narrow sluice and then allowed to pour back out to its natural configuration.
The rushing water that poured through the sluice turned an undershot waterwheel (so named because the water ran under instead of over the wheel). That wheel, in turn, powered a generator in the millhouse that produced more than enough electricity to meet the needs of the recreation area.
The concept worked like a charm. Not only did the millhouse create electricity, but the log and stone design of the structure added a beautiful touch to the setting of the springs. It because a much loved part of the site.
As interpretive panels at the old mill explain, the power plant was a good example of a 1930s “green energy” project. It generated electricity without destroying the scenic beauty of the springs and without producing pollution of any kind.
The Juniper Springs Millhouse no longer generates electricity, but the structure has been beautifully preserved. The stone wall at the waterwheel end is a beautiful piece of CCC masonry work.
After visiting the millhouse, we took one of the hiking trails to another spring where we saw a gator. One of the rangers told me that someone asked him earlier if they feed the alligators. The other ranger joked, "Yeah, we feed 'em tourists!" It cracked me up.
We really enjoyed our visit at this beautiful place. Next time we need to bring our swimsuits and enjoy this: