Visit Marion Facebook MARION COUNTY LOCAL HAZARD MITIGATION PLAN July 2019 PREPARED BY: Burton Planning Services PREPARED FOR: 252 Electric Avenue Marion County EMA Westerville, Ohio 43081 222 West Center Street www.burtonplanning.com Marion, Ohio 43302 1 TABLE OF CONTENTS Chapters & Sections Page 1 Introduction ............................................................................................................................................ 1 2 History and Demographics .................................................................................................................... 8 3 Planning Process ................................................................................................................................ 21 4 Hazard Identification and Risk Assessment ...................................................................................... 28 4.1 Flooding ........................................................................................................................................... 29 4.2 Utility Failure ................................................................................................................................... 41 4.3 Severe Winter Storms .................................................................................................................... 43 4.4 Tornadoes ....................................................................................................................................... 49 4.5 Hazardous Materials ...................................................................................................................... 54 4.6 Windstorms ..................................................................................................................................... 58 4.7 Hailstorms ....................................................................................................................................... 71 4.8 Terrorism ......................................................................................................................................... 79 4.9 Severe Storms ................................................................................................................................ 82 4.10 Drought and Extreme Heat .......................................................................................................... 85 4.11 Invasive Species ........................................................................................................................... 92 4.12 Wildfire .......................................................................................................................................... 96 4.13 Earthquakes ................................................................................................................................. 99 4.14 Dam Failure ................................................................................................................................ 107 5 Hazard Mitigation .............................................................................................................................. 112 6 Schedule and Maintenance .............................................................................................................. 185 Appendices ........................................................................................................................................... 187 A – Historical Hazard Events .............................................................................................................. 188 B – Matrix Scoring Spreadsheet ........................................................................................................ 278 C – Critical Facilities List..................................................................................................................... 307 D – Sources ......................................................................................................................................... 309 E – FEMA Flood Maps ......................................................................................................................... 313 F – Meeting Documentation ............................................................................................................... 322 Marion County EMA | Local Hazard Mitigation Plan ii TABLE OF CONTENTS List of Figures Page Figure 1.1: Marion County Jurisdictions and Major Features ................................................................... 3 Figure 1.2: Marion County Land Use Map .................................................................................................. 6 Figure 1.3: Marion County Land Cover Map ............................................................................................... 7 Figure 2.1: Harding’s Home ........................................................................................................................ 9 Figure 2.2: The Harding Memorial and Heritage Hall ................................................................................ 9 Figure 4.1.1: Flood Hazard Map .............................................................................................................. 30 Figure 4.4.1: Worst-Case Scenario Tornado in Marion County .............................................................. 53 Figure 4.5.1: Hazardous Materials Risk Areas ........................................................................................ 55 Figure 4.10.1: Heat Index Chart ............................................................................................................... 85 Figure 4.10.2: Drought Monitor for the State of Ohio ............................................................................ 86 Figure 4.10.3: Palmer Drought Severity Index for the United States in July of 2012 .......................... 89 Figure 4.12.1: ODNR Division of Forestry Wildfire Risk Level by Community ....................................... 97 Figure 4.13.1: Map of Deep Structures in Ohio .................................................................................... 101 Figure 4.13.2: Location of Seismometers in Ohio ................................................................................ 102 Figure 4.13.3: Earthquake Epicenters in Ohio ...................................................................................... 103 Figure 4.13.4: Chance of Potentially Minor-Damage Ground Shaking in 2018 ................................. 104 Figure 4.13.5: Probability of Earthquakes in the United States .......................................................... 105 Figure 4.14.1: Locations of Dams in Marion County, Ohio .................................................................. 108 List of Tables Page Table 1.1: Marion County Townships .......................................................................................................... 2 Table 1.2: Marion County Jurisdictions ...................................................................................................... 2 Table 1.3: Marion County Parks and Nature Areas .................................................................................. 9 Table 2.1: Communication Outlets .......................................................................................................... 10 Table 2.2: County/Township population growth estimates .................................................................... 11 Table 2.3: Marion County Population Totals 2010-2017 ...................................................................... 12 Table 2.4: Marion County Housing Statistics 2017 Estimate ................................................................ 12 Table 2.5: Marion County Income Statistics 2017 Estimate ................................................................. 12 Table 2.6: City of Marion Population Totals 2010-2017 ........................................................................ 13 Table 2.7: City of Marion Housing Statistics 2017 Estimate ................................................................. 13 Table 2.8: City of Marion Income Statistics 2017 Estimate .................................................................. 13 Table 2.9: Village of Caledonia Population Totals 2010-2017 .............................................................. 14 Table 2.10: Village of Caledonia Housing Statistics 2017 Estimate ..................................................... 14 Table 2.11: Village of Caledonia Income Statistics 2017 Estimate ...................................................... 14 Table 2.12: Village of Green Camp Population Totals 2010-2017 ....................................................... 15 Table 2.13: Village of Green Camp Housing Statistics 2017 Estimate ................................................. 15 Table 2.14: Village of Green Camp Income Statistics 2017 Estimate .................................................. 15 Table 2.15: Village of LaRue Population Totals 2010-2017 ................................................................. 16 Table 2.16: Village of LaRue Housing Statistics 2017 Estimate ........................................................... 16 Table 2.17: Village of LaRue Income Statistics 2017 Estimate ............................................................ 16 Table 2.18: Village of Morral Population Totals 2010-2017 ................................................................. 17 Table 2.19: Village of Morral Housing Statistics 2017 Estimate ..........................................................