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<br /> <br />2021 Multijurisdictional Local Hazard Mitigation Plan <br /> <br />data and damage and economic loss estimates for buildings and infrastructure. Its advantages include the <br />following: <br /> Provides a consistent methodology for assessing risk across geographic and political entities. <br /> Provides a way to save data so that it can readily be updated as population, inventory, and other factors <br />change and as mitigation planning efforts evolve. <br /> Facilitates the review of mitigation plans because it helps to ensure that FEMA methodologies are <br />incorporated. <br /> Supports grant applications by calculating benefits using FEMA definitions and terminology. <br /> Produces hazard data and loss estimates that can be used in communication with local stakeholders. <br /> Is administered by the local government and can be used to manage and update a hazard mitigation plan <br />throughout its implementation. <br /> <br />Levels of Detail for Evaluation <br />Hazus provides default data for inventory, vulnerability, and hazards; this default data can be supplemented with <br />local data to provide a more refined analysis. The model can carry out three levels of analysis, depending on the <br />format and level of detail of information about the planning area: <br /> Level 1—All of the information needed to produce an estimate of losses is included in the software’s <br />default data. This data is derived from national databases and describes in general terms the characteristic <br />parameters of the planning area. <br /> Level 2—More accurate estimates of losses require more detailed information about the planning area. To <br />produce Level 2 estimates of losses, detailed information is required about local geology, hydrology, <br />hydraulics and building inventory, as well as data about utilities and critical facilities. This information is <br />needed in a GIS format. <br /> Level 3—This level of analysis generates the most accurate estimate of losses. It requires detailed <br />engineering and geotechnical information to customize it for the planning area. <br />7.2 RISK ASSESSMENT APPROACH <br /> <br />7.2.1 Hazard Profile Development <br />Hazard profiles were developed through web-based research and review of previous reports and plans, including <br />community general plans and state and local hazard mitigation plans. Frequency and severity indicators include <br />past events and the expert opinions of geologists, emergency management specialists, and others. <br /> <br />7.2.2 Optional Equity Lens—Social Vulnerability Index <br />Social vulnerability is the susceptibility of social groups to the adverse impacts of natural hazards, including <br />disproportionate death, injury, loss, or disruption of livelihood. Social vulnerability considers the social, <br />economic, demographic, and housing characteristics of a community that influence its ability to prepare for, <br />respond to, cope with, recover from, and adapt to environmental hazards. <br /> <br />The update process for this plan included an optional equity lens that participating jurisdictions could choose to <br />apply in development of their hazard mitigation action plans. For that lens, Tetra Tech used indicators from <br /> <br /> <br />7-2