Shelby County Natural Hazards Mitigation Plan Prepared for Shelby County, Ohio October 2017 TABLE OF CONTENTS LIST OF ACRONYMS…………………………………………………………………………………iii EXECUTIVE SUMMARY………………………………………………………………….…………..v 1.0 INTRODUCTION ................................................................................................................... 1-1 1.1 Mission Statement………………………………………………………………………………....1-2 1.2 Planning Approach ................................................................................................................ 1-3 2.0 COMMUNITY INFORMATION .............................................................................................. 2-1 2.1 County Profile ........................................................................................................................ 2-1 2.2 County History ....................................................................................................................... 2-1 2.3 Jurisdictions ........................................................................................................................... 2-1 2.4 Census Information................................................................................................................ 2-3 2.5 County Land Use.………………………..................................………………………….……..2-4 2.6 County Water Utilities……………………………………………………………………….….…2-8 3.0 INITIAL MITIGATION PLANNING PROCESS ..................................................................... 3-1 3.1 Public Notification and Request for Community Participation .............................................. 3-1 3.2 Plan Update Committee Development …………………………………………………….……3-1 3.3 Update Committee Meetings and Setting Committee Planning Activities ............................ 3-4 4.0 HAZARD PROFILE ............................................................................................................... 4-1 4.1 Initial Hazard Assessment ..................................................................................................... 4-1 4.2 Risk Assessment Ranking ..................................................................................................... 4-2 4.3 Flooding ................................................................................................................................. 4-2 4.4 Summer Storms ..................................................................................................................... 4-6 4.5 Winter Storms…………………………………………………………………………………….. 4-8 4.6 Tornadoes………………………………………………………………………………………….4-11 4.7 Droughts and Extreme Heat .................................................................................................. 4-13 4.8 Earthquakes………………………………………………………………………………………..4-14 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 HAZARD MITIGATION PRACTICES ................................................................................... 6-1 6.1 Local Planning, Zoning and Regulations............................................................................... 6-1 6.2 Structure and Infrastructure Projects .................................................................................... 6-8 6.3 Natural Systems Protection ................................................................................................... 6-9 6.4 Education and Awareness Programs …………………………………………………….….....6-11 6.5 Mitigation Planning Activities by County Jurisdiction …………………………………………6-13 7.0 PROBLEM STATEMENTS, GOALS AND OBJECTIVES ................................................... 7-1 7.1 Flooding ................................................................................................................................. 7-1 7.2 Summer Storms……………………………………………………………………………………7-1 7.3 Winter Storms………………………………………………………………………………………7-2 7.4 Tornadoes…………………………………………………………………………………………..7-3 7.5 Droughts and Extreme Heat………………………………………………………………………7-3 7.6 Earthquakes………………………………………………………………………………………...7-4 i 8.0 ACTION MATRIX ................................................................................................................. 8-1 8.1 Action Matrix Development .................................................................................................... 8-1 8.2 Evaluating and Prioritizing Mitigation Actions ....................................................................... 8-1 8.3 Matrix Results……………………………..…………………………………………...…………..8-1 9.0 PLAN FINALIZATION AND MAINTENANCE………………………………...………………..9-1 9.1 Draft Plan Finalization……………………………………………………………………………..9-1 9.2 Formal Public Review and Open House…………………………………………………………9-1 9.3 Draft Plan Submission……………………………………………………………………………..9-1 9.4 Plan Finalization……………………………………………………………………………………9-1 9.5 Plan Adoption……………………………………………………………………………………….9-2 9.6 Plan Distribution…………………………………………………………………………………….9-2 9.7 Plan Review and Maintenance……………………………………………………………………9-2 9.8 Plan Integration……………………………………………………………………………………..9-3 9.9 Resolution of Adoption……………………………………………………………………………..9-4 9.10 Local Jurisdiction Ordinance……………………………………………………………………..9-6 LIST OF APPENDICES Appendix A – Notification Process Appendix B – Political Boundaries Appendix C – Watershed Maps Appendix D – HAZUS Information and Data for 25 and 100-year Floods Appendix F – Groundwater Resources Appendix G – National Climatic Data Center Tables Appendix H – Multi-Hazard Maps Appendix I - Mitigation Alternatives Evaluation and Assessment Appendix J – Action Plan Appendix K – References Appendix L – Resolutions ii LIST OF ACRONYMS ARC American Red Cross BFE Base Flood Elevation BMPs Best Management Practices CNMP Comprehensive Nutrient Management Plan CREP Conservation Reserve Enhancement Program CRP Conservation Reserve Program DMA2K Disaster Mitigation Act of 2000 EAS Emergency Alert System EMA Emergency Management Agency EMS Emergency Management Services EOC Emergency Operations Center EOP Emergency Operations Plan EPA Environmental Protection Agency EQIP Environmental Quality Incentives Program FEMA Federal Emergency Management Agency FIRM Flood Insurance Rate Map FMA Flood Mitigation Assistance GIMS Geographical Information Management Systems gpd gallons per day gpm gallons per minute GPS Global Positioning System HMGP Hazard Mitigation Grant Program HUD Housing and Urban Development I/I Inflow and Infiltration LEADS Law Enforcement Automated Data System LEAP Livestock Environmental Assurance Program LLIA Lake Loramie Improvement Association LVA Loramie Valley Alliance MCD Miami Conservancy District mi2 square miles Mitigation Plan Natural Hazards Mitigation Plan MMI Modified Mercalli Intensity MNM Manure Nutrient Management mph miles per hour NAWAS National Warning System NCDC National Climatic Data Center NFIP National Floodplain Insurance Program NOAA National Oceanic and Atmospheric Administration NOI Notice of Intent NPPC National Pork Producers Council NRCS Natural Resource Conservation Service NWS National Weather Service ODNR Ohio Department of Natural Resources ODOT Ohio Department of Transportation OEMA Ohio Emergency Management Agency OPF Official Plan Flood OSHP Ohio State Highway Patrol PDM Pre-Disaster Mitigation PIO Public Information Officer PUCO Public Utilities Commission of Ohio iii SCARES Shelby County Amateur Radio Emergency Services SWCD Soil and Water Conservation District SWMP Storm Water Management Plan USDA United States Department of Agriculture USGS United States Geographical Survey WCT Wind Chill Temperature WMSC Water Management and Sediment Control WWTP Wastewater Treatment Plant iv EXECUTIVE SUMMARY The Shelby County Emergency Management Agency 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 causing 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. The initial Natural Hazards Mitigation Plan was developed in 2005 under the guidance of a Core Group of individuals