Vulnerability Assessment Exposure Analysis
This analysis evaluates the exposure of Hillsborough County assets within the redevelopment area. The exposure analysis is the first step in completing a vulnerability assessment identifying potential flood threats and assets exposed to flooding. As part of this analysis, Asset Threat Matrices were developed to identify the flood exposure for the following assets: • County Maintained Roads • Evacuation Routes • Hospitals • Shelters • Schools • Libraries • Public Pump Stations There are no fire stations, libraries, hospitals, or shelters within the North Airport redevelopment limits. The County assets within this area were analyzed based on four flood threats, 100-year event, FEMA Flood Maps, Category 1 Hurricane, and Category 3 Hurricane. The North Airport Redevelopment Area is within the Northwest Five Watershed and therefore the SWFWMD Board Certified Northwest Five Watershed 100-year floodplain was used for the 100-Year Floodplain analysis. To determine if an asset is exposed to flooding, the flood data is overlayed on top of the asset location. If the flood area intersects the asset footprint, then the asset is considered exposed. County Maintained Roads There are 54 County maintained roadways identified within the North Airport Redevelopment Area. The 100- Year Event exposed approximately 70% of the County maintained roads to flooding. FEMA Flood Maps exposed approximately 48% of the County maintained roads. Category 1 Hurricane did not expose any County maintained roads in the North Airport Redevelopment Area, but the Category 3 Hurricane was found to expose approximately 33% of County maintained roads. These percentages refer to how many roads were impacted out of the total number of roads, not the total length of roadways submerged. Integrating flood depths is the next step of the vulnerability analysis. The asset threat matrix Table 12 identifies each County maintained road and its exposure to flooding during each flood threat. The results of this analysis were compared to the results of the USF Hillsborough County Community Vulnerability Study. The USF study maps indicate Veterans Expressway will be exposed to flooding by the Category 3 Hurricane with Intermediate-Low Sea Level Rise and High Sea Level Rise. The maps for the 100-Year Event, FEMA Flood Map, and Category 1 and 3 Hurricanes are shown in Figure 18, Figure 19, Figure 20, and Figure 21 . Table 11. Summary of County Maintained Roads Exposure Delaney Creek Watershed 100-Year Event FEMA Flood Maps Category 1 Hurricane Category 3 Hurricane % County Maintained Roads Exposed 70.37 48.15 0.00 33.33
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Hillsborough County
North Airport Redevelopment Area Infrastructure Assessment
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