Boone County Hazard Mitigation Plan October 2010 Prepared by: Mid-Missouri Regional Planning Commission 206 East Broadway P.O. Box 140 Ashland, MO 65010 Phone: (573) 657-9779 Fax: (573) 657-2829 Plan updates available online at www.mmrpc.org Cover Photo: The 90 foot Missouri Champion Bur Oak near McBaine has survived fire, several lightning strikes, and untold numbers of floods and droughts in its 350 plus years of life in the Missouri River floodplain. With its superior genetic makeup, it stands as a fitting symbol for effective hazard mitigation in Boone County. (Photo courtesy of Tim Williams, Boonville, MO.) Table of Contents Executive Summary 1 Prerequisites 2 Section 1: Introduction and Planning Process 1.1 Purpose 3 1.2 Background 4 1.3 History of the Boone County Hazard Mitigation Plan 4 1.4 Participating Jurisdictions 6 1.5 The Update Process 9 Section 2: Planning Area Profile and Capabilities 2.1 History 18 2.2 Natural Hazard History 18 Map: Boone County Tornado Events and 1993 Flood Extent 20 2.3 Geography and Ecology 21 2.4 Climate 23 2.5 Form of Government 24 2.6 Community Partnerships 24 2.7 Demographic Information 25 2.8 Income 26 2.9 Economy, Industry, and Employment 26 2.10 Transportation and Commuting Patterns 29 2.11 Education 32 2.12 Major Employers 33 2.13 Capabilities Assessment 34 2.13.1 Staff/Organizational Capabilities and Community Profiles 34 2.13.2 Technical Capabilities 45 2.13.3 Legal Authority 50 2.13.4 Political Willpower 51 Section 3: Risk Assessment 3.1 Identifying Hazards 52 3.2 Profiling Hazards 53 3.2.1 Dam Failure 55 Map: Boone County Dam Locations 59 Map: Columbia Dam Locations 60 Map: Dam Locations: Hallsville-Harrisburg-Hartsburg-Centralia 61 Map: Boone County High Hazard Dams 62 3.2.2 Drought 65 3.2.3 Earthquake 71 3.2.4 Extreme Heat 76 3.2.5 Flood 81 Map: FIRM for Hartsburg 83 i Map: FIRM for Huntsdale 84 Map: FIRM for Rocheport 85 Map: Boone County Road Closures from Flash Flooding 86 Map: Hartsburg 1993 Flood Event Vulnerability 90 Map: Rocheport 1993 Flood Event Vulnerability 91 FEMA Repetitive Losses in Boone County 95 National Flood Insurance Program (NFIP) 95 3.2.6 Land Subsidence/Sinkhole 98 Map: Boone County Known Sinkhole Locations 100 3.2.7 Levee Failure 101 3.2.8 Severe Winter Weather 104 3.2.9 Tornado and Thunderstorm 108 3.2.10 Wildfire 129 3.3 Vulnerability Assessment Overview 133 3.3.1 Boone County Inventory 133 3.3.2 School Districts and Higher Education 142 3.3.3 Community Jurisdictions 145 3.4 Vulnerability Summary and Impact 147 3.4.1 Dam Failure Vulnerability 147 3.4.2 Drought Vulnerability 161 3.4.3 Earthquake Vulnerability 162 3.4.4 Extreme Heat Vulnerability 164 3.4.5 Flood Vulnerability 166 Map: Village of Hartsburg 100-YR Flood Boundary 167 Map: City of Rocheport 100-YR Flood Boundary 168 National Flood Insurance Repetitive Loss Properties 169 3.4.6 Land Subsidence/Sinkhole Vulnerability 170 3.4.7 Levee Failure Vulnerability 171 3.4.8 Severe Winter Weather Vulnerability 172 3.4.9 Tornado and Thunderstorm Vulnerability 174 3.4.10 Wildfire Vulnerability 176 3.5 Jurisdictional Vulnerability Variations 177 Map: General Location of McBaine and Hartsburg Levee Districts 184 Map: Hartsburg and Rocheport Wildland Urban Interface 192 Section 4: Mitigation Strategy 4.1 Hazard Mitigation Goals 193 4.2 Update of Mitigation Actions 194 4.3 Mitigation Goals, Objectives, and Actions Overview 204 4.4 Prioritization, Implementation, and Administration of Mitigation Actions 215 4.4.1 Boone County 218 4.4.2 Ashland 227 4.4.3 Centralia 234 4.4.4 Columbia 240 4.4.5 Hallsville 249 4.4.6 Hartsburg 255 ii 4.4.7 Huntsdale 261 4.4.8 Rocheport 265 4.4.9 Sturgeon 271 4.4.10 Centralia R-VI School District 277 4.4.11 Columbia Public Schools 280 4.4.12 Southern Boone School District 283 4.4.13 Sturgeon R-V School District 286 4.4.14 Stephens College 289 4.4.15 University of Missouri 292 4.5 Funding Sources 295 Section 5: Plan Maintenance Process 5.1 Plan Monitoring and Evaluation 301 5.2 Plan Updating 303 5.3 Integration of Hazard Mitigation into Other Planning Mechanisms 305 5.4 Public Participation in Plan Maintenance 308 Section 6: Maps Boone County Key Infrastructure 310 Boone County Educational Facilities 311 Boone County Fire Protection 312 Columbia Fire Protection 313 Boone County Population Density 314 Boone County Land Use/Land Cover 315 Boone County Floodplains 316 Boone County Healthcare Facilities 317 Boone County Transportation 318 HAZUS Maps 319 Appendices Appendix A Adoption Resolutions 331 Appendix B Sign-in Sheets from Meetings 347 Appendix C Press Releases/Meeting Announcements 357 Appendix D Dam Inventory 361 Appendix E Flood Buyouts 367 Appendix F Hazard Probability, Severity, and Vulnerability Worksheet by Jurisdiction 369 Appendix G Updating of Boone County FIRM 371 Appendix H Information and Guidelines for Assessing Mitigation Actions 373 Appendix I Village of Harrisburg - Jurisdiction Specific Information 375 iii iv Executive Summary The Boone County Hazard Mitigation Plan is a multi-jurisdictional plan prepared and written with the active participation of nineteen jurisdictions in Boone County (the county itself, nine communities, six school districts, two colleges, and one university). Sixteen of these jurisdictions completed the requirements to be considered participating jurisdictions in the plan. The plan profiles ten natural hazards (dam failure, drought, earthquake, extreme heat, flood, levee failure, land subsidence/sinkhole, severe winter weather, tornado/thunderstorm, and wildfire) which threaten lives and property in some, or all, of the participating jurisdictions. Each hazard has been evaluated with regard to its previous occurrence, probability and severity of future occurrence, existing mitigation strategies in place to deal with it, and its potential impact on each jurisdiction. An overall mitigation strategy has been developed through thoughtful consideration of the threats involved and the time, resources, and willpower to mitigate their effects. The goals of this mitigation strategy are: Goal 1: Mitigation Planning - Mitigate effects of future natural hazards throughout the County through public and private action. Goal 2: Mitigation Policy - Develop policies that limit the impact of natural hazards on lives and property. Goal 3: Mitigation Programs - Implement cost effective and feasible mitigation programs to protect lives and property of Boone County jurisdictions. Goal 4: Public Awareness - Increase public awareness of natural hazards in order to make the public a greater partner in hazard mitigation planning. Goal 5: Future Development - Promote hazard-proof development in the jurisdictions of Boone County. Specific mitigation actions have been developed and prioritized by each participating jurisdiction to further the goals of the overall mitigation strategy. The Boone County Hazard Mitigation Plan will be adopted by resolution of each of the participating jurisdictions. Participation in, and formal adoption of, this plan qualifies a jurisdiction to apply for Federal Emergency Management Agency (FEMA) pre-disaster mitigation grants and the mitigation portion of post-disaster mitigation grants. The plan will be updated in five years, as required by FEMA. It will be evaluated and maintained on a yearly basis prior to this update. Mid-MO RPC | Boone County Hazard Mitigation Plan 2010 1 Prerequisites Multi-Jurisdictional Plan Adoption Requirement For multi-jurisdictional plans, each jurisdiction requesting approval §201.6(c)(5): of the plan must document that it has been formally adopted. Adoption resolutions for the participating jurisdictions are included in Appendix A. The adoption resolution for the Village of Harrisburg, along with all jurisdiction specific information for Harrisburg, is included in Appendix I. Mid-MO RPC | Boone County Hazard Mitigation Plan 2010 2 Section 1: Introduction and Planning Process 1.1 Purpose The Boone County Hazard Mitigation Plan is designed as a resource for county and municipal governments, residents, developers, organizations, and others interested in controlling the potentially disastrous effects of natural hazards in Boone County. Each year natural hazards take a great toll in the United States. Boone County is not immune; it is subject to numerous natural hazards which can threaten life and property. A well-conceived mitigation strategy, developed through an inclusive and thoughtful planning process, is an important step in protecting citizens and reducing loss. The Federal Emergency Management Agency (FEMA) defines mitigation as “sustained action taken to reduce or eliminate long-term risk to people and their property from hazards and their effects.” A 2006 study by the Institute for Building Science found that $4 was saved in post- disaster response and recovery for every $1 spent on pre-disaster mitigation. The Boone County Hazard Mitigation Plan was developed by the communities and citizens of Boone County, their elected officials and public servants. The process was carried out by identifying the natural hazards that impact Boone County and its residents, assessing the probability of occurrence and severity posed by each hazard, identifying the most vulnerable areas, and evaluating all possible mitigation actions which might be effective. Potential mitigation actions were assessed and prioritized based on the perceived need, probable outcome, potential for being executed, and benefit related to cost. The plan was developed in accordance with FEMA’s Mitigation Planning regulations under Code of Federal Regulations (CFR), Title 44, Part 201.6, Local Mitigation Plans. Relevant requirements from CFR §201.6 are highlighted throughout the plan. Multiple jurisdictions within Boone County participated in the development of this plan. Having a current and approved hazard mitigation plan makes each of the participating jurisdictions eligible to apply for FEMA pre-disaster mitigation grants and the mitigation portion of post- disaster mitigation grants.