Shelby County Natural Hazards Mitigation Plan
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Shelby County Natural Hazards Mitigation Plan Prepared for Shelby County, Ohio February, 2005 Shelby County- Countywide All Natural Hazards Mitigation Plan Draft TABLE OF CONTENTS EXECUTIVE SUMMARY.............................................................................................................iii LIST OF ACRONYMS .................................................................................................................iv 1.0 INTRODUCTION .................................................................................................................1-1 1.1 Planning Approach .......................................................................................................1-2 1.2 Participating Communities ............................................................................................1-3 2.0 COMMUNITY INFORMATION ............................................................................................2-1 2.1 County Profile ...............................................................................................................2-1 2.2 County History ..............................................................................................................2-1 2.3 Jurisdictions ..................................................................................................................2-2 2.4 Census Information.......................................................................................................2-9 2.5 County Land Use and Future Land Use .....................................................................2-11 2.6 County Utilities............................................................................................................2-16 3.0 COUNTYWIDE ALL NATURAL HAZARDS MITIGATION PLANNING PROCESS...........3-1 3.1 Mission Statement ........................................................................................................3-1 3.2 Notification Process ......................................................................................................3-1 3.3 Groups ..........................................................................................................................3-1 3.4 Core Group Meetings ...................................................................................................3-2 3.5 Matrix Development......................................................................................................3-3 3.6 Public Review and Involvement....................................................................................3-4 3.7 Finalization....................................................................................................................3-4 4.0 HAZARD PROFILE .............................................................................................................4-1 4.1 Initial Hazard Assessment ............................................................................................4-1 4.2 Risk Assessment Ranking ............................................................................................4-1 4.3 Winter Storms ...............................................................................................................4-2 4.4 Summer Storms – Thunderstorms, High Winds, Hail and Lightning.............................4-3 4.5 Flooding ........................................................................................................................4-5 4.6 Tornadoes.....................................................................................................................4-8 4.7 Droughts .....................................................................................................................4-10 4.8 Earthquakes................................................................................................................4-12 4.9 Significant Events .......................................................................................................4-15 5.0 VULNERABILITY ASSESSMENT ......................................................................................5-1 5.1 Critical Facilities............................................................................................................5-1 5.2 Potential Dollars Lost....................................................................................................5-2 5.3 Vulnerability Data Collection.........................................................................................5-3 5.4 Vulnerability Assessment by Hazard ............................................................................5-4 6.0 GOALS ................................................................................................................................6-1 6.1 County Goals ................................................................................................................6-1 i Shelby County- Countywide All Natural Hazards Mitigation Plan 7.0 HAZARD MITIGATION PRACTICES..................................................................................7-1 7.1 Property Protection .......................................................................................................7-1 7.2 Preventive Measures ....................................................................................................7-2 7.3 Natural Resource Protection.........................................................................................7-6 7.4 Emergency Services...................................................................................................7-12 7.5 Flood Control ..............................................................................................................7-17 7.6 Public Information .......................................................................................................7-19 8.0 MATRIX RESULTS .............................................................................................................8-1 8.1 Matrix Results ...............................................................................................................8-1 8.2 Mitigation Alternatives for Each Participating Community ............................................8-5 8.3 Action Plan....................................................................................................................8-6 8.4 Mitigation Plan Maintenance and Schedule..................................................................8-6 8.5 Local Planning Mechanisms .........................................................................................8-7 8.6 Resolution of Adoption..................................................................................................8-8 LIST OF APPENDICES Appendix A – Notification Process Appendix B – Political Boundaries Appendix C – Watershed Maps Appendix D – Utility Service Maps Appendix E – Groundwater Resources Appendix F – Meeting Minutes Appendix G – Problem Statements and Overall Goals Appendix H – Significant Events Appendix I – National Climatic Data Center Tables Appendix J – Multi Hazard Maps Appendix K – Critical Facilities Appendix L – Alternatives Matrix Appendix M – Action Plan Appendix N - References ii Shelby County- Countywide All Natural Hazards Mitigation Plan Draft EXECUTIVE SUMMARY The Shelby County Emergency Management Agency/Office of Homeland Security spearheaded this effort to complete a comprehensive countywide Mitigation Plan. Their dedication to this mitigation planning effort is seen in the results of having full participation from the County as well as the incorporated jurisdictions. Shelby County is subject to natural hazards that threaten life and health as well as having caused extensive property damage. To better understand these natural hazards and their impacts on people and property and to identify ways to reduce those impacts, the County’s Emergency Management Agency (EMA) undertook this countywide Mitigation Plan. Most mitigation activities need funding. Under the Disaster Mitigation Act of 2000 (DMA2K, 42 USC 5165), a mitigation plan is a requirement for Federal mitigation funds. Therefore, a mitigation plan will both guide the best use of mitigation funding and meet the prerequisite for obtaining such funds from the Department of Homeland Security’s Federal Emergency Management Agency (FEMA). This Mitigation Plan meets the criteria as set forth by FEMA in the DMA2K and provides a community with a “comprehensive guide” for future mitigation efforts as they relate to the hazards that affect their community. This Mitigation Plan was developed under the guidance of a Core Group of individuals from communities and agencies throughout Shelby County. The Core Group met four separate times during the planning process to discuss the hazards that affect the County, the problems associated with these hazards, potential mitigation alternatives to minimize the effect of these hazards and goals that they would like to see achieved within the County. Shelby County has experienced many natural disasters in the past one hundred years. The Core Group evaluated these hazards and chose to address the following hazards based on their impact on human health and property damage: winter storms (snow, ice, and extreme cold), severe storms (thunderstorms, high winds, hail and lightning), flooding, tornadoes, droughts and extreme heat, and earthquakes. With the hazards identified, a vulnerability assessment was completed for Shelby County. This assessment reviews how vulnerable the county is to property damage, threats to public