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 pump stations, libraries, hospitals, or shelters within the 56th Street study area. The County assets within this area are analyzed based on four flood threats: 100-year event, FEMA Flood Zone, Category 1 Hurricane, and Category 3 Hurricane. The 56th Street Redevelopment Area is within the Hillsborough / East Lake Watershed so the SWFWMD Board Certified Hillsborough / East Lake Watershed 100-year floodplain is 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. It was determined that neither of the Hurricane flood threats exposed any assets within this project area. County Maintained Roads There are 21 County maintained roads identified within the 56th Street Redevelopment Area. Out of all the flood threats evaluated, the 100-Year Event exposed approximately 90% of the County maintained roads. The FEMA Flood Maps were found to expose approximately 24% of County maintained roads exposed. 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 11 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 showed there is no exposure in this project area for Category 1 and Category 3 Hurricanes with Intermediate-Low and High SLR. Additionally, the USF maps showed exposure of N 56th Street by the 100-Year Event. The maps for the 100-Year Event and FEMA Flood Map are shown in Figure 18 and Figure 19 .
46 56th Street Redevelopment Area Infrastructure Assessment Hillsborough County
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