Macomb County Hazard Mitigation Plan 2020-2025 MACOMB COUNTY HAZARD MITIGATION PLAN 2020 – 2025 [Final draft] Prepared by: Macomb County Emergency Management & Communications 117 S. Groesbeck, Mount Clemens MI 48043 1 Macomb County OEM Macomb County Hazard Mitigation Plan 2020-2025 Table of Contents 1 Planning Process .................................................................................. 8 1.1 Purpose of Hazard Mitigation Plan ........................................................................................ 9 1.2 Parties Involved ....................................................................................................................... 9 1.3 Planner’s Roles ...................................................................................................................... 10 1.4 Public Involvement Methods ................................................................................................ 10 1.4.1 Newspapers ................................................................................................................... 10 1.4.2 Town Hall Meetings ....................................................................................................... 10 1.4.3 Web Site ........................................................................................................................ 11 1.4.4 Community Surveys ....................................................................................................... 11 1.5 Results of Outreach Efforts .................................................................................................. 12 1.6 Plan Preparation .................................................................................................................... 12 2 Hazard Assessment ............................................................................ 13 2.1 County Profile ........................................................................................................................ 14 2.1.1 General Profile Information ............................................................................................ 14 2.1.2 Infrastructure .................................................................................................................. 15 2.1.3 Future Trends ................................................................................................................ 17 2.1.4 Census Data .................................................................................................................. 18 2.2 Hazard Identification ............................................................................................................. 22 2.3 Risk and Vulnerability Assessment by Hazard .................................................................. 26 2.3.1 Active Assailant .............................................................................................................. 26 2.3.2 Civil Disturbances .......................................................................................................... 29 2.3.3 Cyberattack .................................................................................................................... 32 2.3.4 Dam Failures .................................................................................................................. 35 2.3.5 Drought .......................................................................................................................... 38 2.3.6 Earthquake ..................................................................................................................... 40 2.3.7 Energy Emergency ........................................................................................................ 42 2.3.8 Extreme Temperature .................................................................................................... 44 2.3.9 Hail Storms .................................................................................................................... 47 2.3.10 Hazardous Materials Incidents (Industrial Accidents) - Fixed Sites .............................. 46 2.3.11 Hazardous Materials Incidents - Transportation ............................................................ 52 2.3.12 Ice and Sleet Storms ..................................................................................................... 54 2.3.13 Infrastructure Failure ...................................................................................................... 56 2.3.14 Lightning ........................................................................................................................ 58 2.3.15 Nuclear Attack ............................................................................................................... 61 2 Macomb County OEM Macomb County Hazard Mitigation Plan 2020-2025 2.3.16 Nuclear Power Plant Accidents ..................................................................................... 63 2.3.17 Oil and Gas Well Accidents ........................................................................................... 66 2.3.18 Petroleum and Natural Gas Pipelines ........................................................................... 68 2.3.19 Public Health Emergencies ............................................................................................ 70 2.3.20 Riverine Flooding ........................................................................................................... 72 2.3.21 Severe Wind .................................................................................................................. 75 2.3.22 Shoreline Flooding and Erosion ..................................................................................... 77 2.3.23 Snowstorms ................................................................................................................... 79 2.3.24 Structural Fires............................................................................................................... 81 2.3.25 Subsidence .................................................................................................................... 83 2.3.26 Terrorism using WMD .................................................................................................... 85 2.3.27 Tornadoes ...................................................................................................................... 88 2.3.28 Transportation Accidents ............................................................................................... 91 2.3.29 Wildfires ......................................................................................................................... 94 3 Flood Mitigation Assistance (FMA) Focus Section: A Detailed Analysis of Macomb County Flood Hazards ......................................... 96 3.1 County Overview ................................................................................................................... 96 3.1.1 Historical Background and Current Conditions .............................................................. 97 3.1.2 Warning Systems ........................................................................................................... 99 3.1.3 Mitigation Priorities ........................................................................................................ 99 3.1.4 Methods for Assessing and Prioritizing Flood Hazard Areas ...................................... 100 3.1.5 Overview of Flood Priorities in Macomb County .......................................................... 101 3.1.6 Highest Priority Areas of Vulnerability Summary Maps ............................................... 103 3.2 Detailed Reports by Community Areas ............................................................................. 124 3.2.1 Armada Township and Village of Armada ................................................................... 124 3.2.2 Bruce Township and Village of Romeo ....................................................................... 125 3.2.3 Center Line .................................................................................................................. 127 3.2.4 Chesterfield Township ................................................................................................. 128 3.2.5 Clinton Township ......................................................................................................... 132 3.2.6 Eastpointe .................................................................................................................... 135 3.2.7 Fraser ........................................................................................................................... 136 3.2.8 Harrison Township ....................................................................................................... 137 3.2.9 Lenox and Richmond Townships................................................................................. 140 3.2.10 Macomb Township ....................................................................................................... 142 3.2.11 Mount Clemens ............................................................................................................ 145 3.2.12 New Baltimore.............................................................................................................. 146 3 Macomb County OEM Macomb County Hazard Mitigation Plan 2020-2025 3.2.13 New Haven .................................................................................................................