The Green River Ferry will be temporarily closed for repairs.
The closure will begin this morning at 9:00.
Mammoth Cave National Park staff says hydraulic fluid is leaking into a containment area within the Ferry, but none has spilled into the river.
Park Officials say they're not sure what is causing the leak, but they hope the problem will only take a couple of hours to fix.
If the Ferry is not repaired by the end of the day, Houchen's Ferry hours will be extended.