01/08/2007 Council Packet - Laserfiche WebLink

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• • Anoka County Multi - Jurisdictional All Hazards Mitigation Plan The Anoka County Hazard Mitigation Planning Committee considered and evaluated all hazards in terms of their potential risk to Anoka County and participating municipalities. The decision to focus on the hazards checked in the above table was based on research of historical events, local knowledge, and the general priorities for implementing mitigation - planning efforts. The State of Minnesota Hazard Mitigation Plan identifies Blizzards and Ice Storms individually. For the purpose of this mitigation plan those hazards are combined under Winter Weather. In addition, Lightning, Windstorm and Hailstorm were individually identified. As those hazards are almost always encountered during thunderstorms, they are combined in the thunderstorm category. Infectious disease is a category that was re- categorized under Epidemics /Pandemics, which also includes Vectors. Water contamination is categorized under public utilities and radiological is categorized under Hazardous Materials. The hazards not included in this plan are listed below along with explanations of why they were not included. 44 CFR Requirement 44 CFR Part 201.6(c)(2)(i): The risk assessment shall include a description of the type, location and extent of all natural hazards that can affect the jurisdiction. The plan shall include information on previous occurrences of hazard events and on the probability of future hazard events A. Does the plan include a description of the types of all natural hazards that affect the jurisdiction? If the hazard identification omits (without explanation) any hazards commonly recognized as threats to the jurisdiction, this part of the plan cannot receive a Satisfactory score. 4.3.1.1 Earthquake The U.S. Geological Survey shaking- hazard map for the United States is based on the rate at which earthquakes occur in different areas and on how far shaking extends from earthquake sources. Colors on this map show the levels of horizontal shaking that have a 1 -in -50 chance of being exceeded in a 50 -year period. Shaking is expressed as a percentage of g (g is the acceleration of a falling object due to gravity). The map shows Anoka County to be outside the range, considered to be an earthquake hazard. A significant earthquake event is expected to have little effect on the population, except for some disruption of commerce. The National Earthquake Hazard Reduction Program recently categorized portions of Western Minnesota as "low risk" and Middle and Eastern Minnesota at no risk, in recognition of the state's vulnerability to earthquakes that occur outside its borders.