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Anoka County 2019 Multi-Jurisdictional All Hazards Mitigation Plan 107 30B4.4 Hazard Vulnerability 50B4.4.1 Jurisdiction Hazard Vulnerability Assessment This Vulnerability Assessment Section provides a vulnerability summary and builds upon the information provided in the Vulnerability Analysis Section and the detailed list of hazard events in Appendix A. This section identifies community assets and development trends in Anoka County, then assessing the potential impact and amount of damage that could be caused by each hazard event. The objective of the assessment is to prioritize hazards of concern to Anoka County and to identify hazard mitigation strategies that will reduce or eliminate their effects. The vulnerability findings presented in this section have resulted in an approximation of risk. These estimates should be used to understand relative risk from hazards and the potential losses that may be incurred, however, uncertainties are inherent in loss estimation methodology, arising from incomplete scientific knowledge concerning specific hazards and their effects on the environment, as well as incomplete data sets, and from approximations and simplifications that are necessary in order to provide a meaningful analysis. Further, most data used in this assessment covers relatively short periods of records which increases the uncertainty of any statistically based analysis. To complete the assessment, each participating municipality provided the best available local data. The Anoka County Emergency Management Organization then collected data from a variety of external sources, including state and federal agencies, and analyses were performed qualitatively and quantitatively. Additional work will be done on an ongoing basis to enhance, and further improve the accuracy of the baseline established here, and it is expected that this vulnerability assessment will continue to be refined through future plan updates as new data and loss estimation methods or tools become available to Anoka County. Two distinct methodologies were applied to assess the risk for Anoka County. The first includes a quantitative analysis that relies upon best available data and technology, while the second methodology includes a qualitative analysis that relies more on local knowledge and rational decision-making. Upon completion, the methodologies are combined to create a “hybrid” approach for assessing hazard vulnerability for Anoka County that allows for some degree of quality control and assurance. Quantitative Methodology consists of utilizing Hazards U.S. Multi-Hazard (HAZUS®MH), a geographic information system (GIS) based loss estimation software available from FEMA. For some hazards, the quantitative assessment also incorporates a detailed GIS-based approach using best available local data from Anoka County. When combined, the results of these vulnerability studies are used to form an assessment of potential hazard losses (in dollars), along with the identification of specific community assets that are deemed potentially at-risk. As the HAZUS-MR software was only acquired by Anoka County during this mitigation planning cycle, its use was limited. Future updates to the plan will fully utilize HAZUS-MR along with the Multi-hazard Requirement §201.6(c)(2)(ii): [The risk assessment shall include a] description of the jurisdiction’s vulnerability to the hazards described in paragraph (c)(2)(i) of this section. This description shall include an overall summary of each hazard and its impact on the community. FMA Requirement §78.5(b): Description of the existing flood hazard and identification of the flood risk, and the extent of flood depth and damage potential. A. Does the plan include an overall summary description of the jurisdiction’s vulnerability to each hazard? B. Does the plan address the impact of each hazard on the jurisdiction?