Key Biscayne's most ambitious shoreline defense idea just cleared a major funding hurdle. The Florida Legislature awarded $250,000 to study whether an offshore barrier reef could slow the erosion eating away at the island's beaches.
The state appropriation, which survived Gov. Ron DeSantis' line-item vetoes on June 30, 2026, will pay for a feasibility study and preliminary design of a marine barrier reef system. The concept involves placing 3D-printed structures offshore to break wave energy before it reaches the sand, according to Roland Samimy, the village's chief resilience and sustainability officer.
The study will analyze how water movement and sediment transport affect Key Biscayne's beaches and whether an artificial reef could reduce erosion and extend the gap between sand renourishment cycles. The village completes renourishment projects roughly every three years, and the most recent wrapped up in 2024. The Village Council approved $112,215 in post-construction monitoring for that project at its Tuesday, June 9, 2026, meeting.
The erosion problem is not abstract. Some stretches of Key Biscayne beach have lost up to 28.4 feet of shoreline, according to the village's beach renourishment program page.
Village officials held a broader Shoreline Update Workshop on Tuesday, April 28, with presentations from Miami-Dade County Commissioner Raquel Regalado, the village manager, and design consultants The Underline, Plusurbia, and HDR.
The study will produce the hydrodynamic data officials need to decide whether a reef barrier is worth pursuing at full scale.
That decision could eventually intersect with another measure headed to voters. On Wednesday, July 15, the Village Council unanimously approved ballot language for a Tuesday, Nov. 3, referendum requiring public approval of any stormwater or flood prevention project exceeding $50 million over three fiscal years. The $250,000 study itself falls far below that threshold, but a future reef construction project could trigger the vote.
The November referendum would be Key Biscayne's first since the $100 million general obligation bond passed in 2020 with 56.54% approval.
Village officials have not announced a timeline for when the study will begin or conclude. Residents can track updates through Village Council agendas posted on the Key Biscayne Granicus portal.
Upcoming community dates:
- Tuesday, Nov. 3 — Stormwater referendum on the general election ballot
