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Sherburne County Multi -Hazard Mitigation Plan, 2020 <br />Table 12. Prioritization of Hazards or Sherburne County <br />Severe Winter Storms <br />(Blizzards, Heavy Snow, High <br />Ice Storms) <br />Severe Summer Storms i <br />(Thunderstorms, High <br />Lightning, Hailstorms, <br />Windstorms, Tornadoes) <br />Flash Flooding & Riverine High <br />Flood <br />Erosion/Landslides <br />Moderate <br />Extreme Heat/Extreme <br />Moderate <br />Cold <br />Drought <br />Moderate <br />Wildland fire <br />Moderate <br />Dam Failure <br />Low <br />Vulnerability Assessment by Jurisdiction <br />Jurisdictions in Sherburne County have varying vulnerabilities to and concerns about impacts to their <br />communities. Interviews with jurisdictionaI representatives in addition tot he Local Mitigation Survey <br />resulted in some specific concerns. Participants were asked to provide feedback on how they felt <br />vulnerability to natural hazards had either increased (due to changes such as development) or <br />decreased (due to local mitigation efforts) overthe past five years. Following is an overview of <br />responses related to noted local vulnerabilities (see Appendix K for the full Local Mitigation Survey <br />Report). This information was used to help tie local vulnerability back to the exposure of people, <br />buildings, infrastructure and the environment to the natural hazards listed in Table 3.2, and to assist <br />local governments in development of related local mitigation actions. Cities not listed did not note any <br />change in risk or local vulnerabilityto hazard events. <br />Sherburne County <br />Sherburne County has experienced high volumes of development in the iggo's and again <br />picking up in the last five years. With increased populations there is a higher risk of damage, but <br />we feel that with strict stormwater requirements the risk is reduced. Development that has <br />occurred in Sherburne County's unincorporated areas in the last 25 years has had to meet a <br />three-foot minimum separation from the highest known water table in an effort to prevent <br />structure flooding in high volume rain events. This has also kept structure back from wetland <br />areas that could also create onsite flooding. In shoreland areas, the county has a 25% <br />impervious surface rule per the State Rules, but there has been an increase of variances applied <br />for and granted in the last 5 years. Staff urges the maintenance of this rule. <br />Page137 <br />