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Treasure Island seawall requirements and local evidence

Treasure Island is a barrier island with Gulf frontage on one side and Boca Ciega Bay canals on the other. Helene left documented sand deposition heavy enough to bury cars and close the island — a useful marker of how much material moves across a shoreline in a single event.

Reviewing authority

City of Treasure Island and Pinellas County, with state and federal review by scope

Pinellas County. Depending on scope and waterway, state and federal review may also apply.

Named waters

  • Boca Ciega Bay
  • Gulf of Mexico
  • residential finger canals

What is documented for Treasure Island

Everything below carries a classification label and a source. Where a source conflicts with another, both are shown.

LOCAL EVIDENCEST-HELENE-TI

Treasure Island took documented surge and heavy sand deposition during Hurricane Helene.

  • Pinellas County barrier islands were closed after the storm while responders cleared roads and assessed damage.
  • Reporting describes tons of sand pushed into streets, in places burying cars and reaching homes.
Source
LOCAL EVIDENCEPIN-01

Pinellas County received a $29.4 million federal grant to repair storm-damaged creeks — which is shoreline erosion work, not seawall replacement.

  • The award is a USDA Emergency Watershed Protection Program grant of $29.4 million, reported in mid-2026.
  • Approximately $26.8 million is for construction and approximately $2.7 million for engineering, environmental review, technical support and administration.
  • Named projects include Joe's Creek, Curlew Creek, Smith Bayou and South Creek.
  • The work is described as stabilising streambanks, restoring water flow and strengthening drainage in areas affected by Hurricane Milton.

Read carefully: Coverage conflicts on scope: one outlet describes five waterways while the itemised reporting names four. Both are recorded here and neither is adjusted. This programme is public creek and streambank work — it is not a private seawall funding source, and no part of it should be read as available to a private owner.

Source

Why Treasure Island is published here

We publish a city only where at least two city-specific facts could be sourced. For Treasure Island these are:

  • Documented Hurricane Helene surge impact, with reported sand deposition burying cars and closing the barrier islands
  • Named waterways: Boca Ciega Bay and the Gulf of Mexico, with residential finger canals
  • Within Pinellas County, where a $29.4M USDA watershed grant funds post-Milton streambank repair

Ten of the eighteen cities we examined did not meet that bar and were not published. The full list and reasons are here.

What this does not tell you

Nothing on this page establishes what your specific wall needs. Requirements turn on your waterway, your scope of work and the current state of local code — all of which change. Use this to know what questions to ask and what a contractor should be able to cite, then confirm with the authority that administers it.

Next steps from Treasure Island