Pre-Hurricane Helene FAQs
What happened to the lake/dam? How did this happen?
The Front Lake Dam, originally constructed in the 1850s, failed in August 2022. The left side of the dam was originally built on sand, not bedrock, and had a history of slow, normal seepage. This seepage was accelerated due to a faulty pipe and undercut the left side of the dam. Corrugated metal pipes are no longer used due to similar issues caused in dams like Front Lake’s. After the dam failure, the park closed Front Lake bridge which crosses the dam for safety reasons. Do not go into these closed areas.
What were the pre-Helene plans to fix the dam?
In spring 2023, the park received $201,000 for the design portion of repairs. Design was the first step and was complex. Design engineers balance keeping original historic elements and appearance with adding modern materials to strengthen and enhance the dam. Design was completed at the time of the hurricane.
Over $1 million in repair money was authorized just prior to Hurricane Helene. The park would have then gone through required compliance and contracting processes. After those requirements were met, repairs would have tentatively started in mid-2025. Repairs were scheduled to take 9-12 months to complete. The estimated repair completion date was mid to late 2026.
When was Front Lake dam built? What was it made of?
Front Lake dam was built in the 1850s. It includes a stone spillway (wall the water flows over, to keep the lake level) and earthen banks on the left and right sides of the spillway. Front Lake bridge was built upon the stone spillway. The NPS has rebuilt the Front Lake bridge periodically since the park was established in 1968. The current bridge was extensively repaired in December 2021.