Lenawee County, Michigan Hazard Mitigation Plan Prepared by the Lenawee County Planning Commission and The Lenawee County Hazard Mitigation Planning Committee for the Lenawee County Board of Commissioners and Local Units of Government within Lenawee County April, 2011 Table of Contents Introduction ..................................................................................................................................................................................................... 7 Plan Preparation and Local Unit Involvement and Participation ............................................................................................................. 13 Staff Involvement...................................................................................................................................................................................... 15 Lenawee County Planning Commission................................................................................................................................................... 15 Opportunities for Participation of Neighboring Communities ................................................................................................................... 17 Coordination with the Lenawee County Comprehensive Land Use Plan................................................................................................. 18 Local Land Use Planning and Zoning ...................................................................................................................................................... 18 Community Profile ........................................................................................................................................................................................ 19 Regional Location..................................................................................................................................................................................... 21 Political Jurisdictions ................................................................................................................................................................................ 21 Community Characteristics....................................................................................................................................................................... 23 Population Density.................................................................................................................................................................................... 23 Population with Special Needs................................................................................................................................................................. 23 School Populations................................................................................................................................................................................... 25 Public Safety Organizations ..................................................................................................................................................................... 28 Seasonal Housing..................................................................................................................................................................................... 28 Median Home Values ............................................................................................................................................................................... 29 Future Land Use....................................................................................................................................................................................... 29 Emergency Warning Sirens...................................................................................................................................................................... 29 Potential Hazards .......................................................................................................................................................................................... 31 Civil Disturbances..................................................................................................................................................................................... 35 Earthquakes.............................................................................................................................................................................................. 36 Subsidence............................................................................................................................................................................................... 37 Scrap Tire Fires ........................................................................................................................................................................................ 37 Structural Fires ......................................................................................................................................................................................... 38 Wildfires .................................................................................................................................................................................................... 41 Riverine Flooding...................................................................................................................................................................................... 41 Dam Failures............................................................................................................................................................................................ 49 Energy Emergencies ................................................................................................................................................................................ 52 Infrastructure Failures............................................................................................................................................................................... 53 Passenger Transportation Accidents ....................................................................................................................................................... 54 Hazardous Material Incidents: Fixed Site and Transportation ................................................................................................................. 55 Nuclear Power Plant Accidents ................................................................................................................................................................ 56 Oil and Natural Gas Well Accidents ......................................................................................................................................................... 58 Oil and Natural Gas Pipeline Accidents ................................................................................................................................................... 58 Nuclear Attacks......................................................................................................................................................................................... 59 Sabotage/Terrorism/WMD........................................................................................................................................................................ 60 Public Health Emergencies ...................................................................................................................................................................... 61 Drought ..................................................................................................................................................................................................... 62 Extreme Temperatures............................................................................................................................................................................. 64 Hail............................................................................................................................................................................................................ 69 Lightning ................................................................................................................................................................................................... 76 Tornadoes................................................................................................................................................................................................. 79 Severe Winds........................................................................................................................................................................................... 84 Snowstorms............................................................................................................................................................................................ 105 Ice and Sleet Storms .............................................................................................................................................................................. 113 Priority, Risk and Vulnerability Assessment...........................................................................................................................................