Every year, flooding causes more property damage in the United States
than any other type of natural disaster.
While recent construction practices and regulations have made new homes
less prone to flooding many existing structures remain susceptible.

Retrofitting non-compliant buildings is a recommended approach to reduce flooding because the property itself remains subject to flooding while the building is modified to prevent or minimize flooding of habitable space. There are several approaches to retrofitting:

  • Elevation of the structure above flood protection levels.
  • Construction of barriers (floodwalls, berms)
  • Dry flood proofing (water tight floor and wall systems).
  • Wet flood proofing (construction that allows the entry and passage of flood water and also removing or relocating items of value to higher elevation levels).

In the event of pending flood threats, it is always advisable to take the following emergency actions:

  • Elevate furniture above flood levels.
  • Create floodway openings in non-habitable areas such as garage doors.
  • Seal off sewer lines to the dwelling to prevent the backflow of sewer waters.

One reason Treasure Island is recognized for its good floodplain management policies is that the City provides public information regarding flood hazards, flood insurance, flood protection, and mitigation measures designed to correct existing deficiencies in flood prone construction. The City has adopted Stormwater Management Regulations issued by FEMA and the Florida Department of Community Affairs which require new construction and substantial remodeling to meet stringent standards in order to increase the survivability of structures, reduce the cost of repair and reconstruction after a storm event, and ensure that reasonably priced flood insurance is available.

The City continues to improve and maintain its stormwater management system. This has reduced the amount and duration of road and yard flooding during the rainy season. The City routinely inspects and performs maintenance on drainage ditches, catch basins, and culverts that comprise the City’s stormwater drainage system.