Pinellas County officials seek federal study of Lake Tarpon flood gates

Pinellas County commissioners have unanimously endorsed a request for a federal feasibility study regarding the aging Lake Tarpon flood-control structure. The outfall, originally built by the U.S. Army Corps of Engineers in 1969, is facing increased pressure from rising tides and more frequent coastal storms.

Pinellas County Commission Chairman Dave Eggers noted that storm surges from Hurricane Idalia in 2023 and Hurricane Debby in 2024 caused the gates to remain closed for extended periods, preventing the release of floodwater for over 24 hours. The current gravity-based system, which drains Lake Tarpon into Old Tampa Bay while preventing saltwater intrusion, was designed for different environmental conditions.

While Southwest Florida's water management district has provided approximately $1.5 million in matching funds, the project requires federal funding and congressional support before the Army Corps of Engineers can proceed with a detailed study. The outcome could lead to significant upgrades or a complete replacement of the infrastructure to mitigate flooding risks for nearby residential areas.