Multi-Hazard Mitigation Plan Johnson County, Indiana
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Multi-Hazard Mitigation Plan Johnson County, Indiana Original Adoption Date: 2008 Updated: 2015 Primary Point of Contact: Emergency Management Agency of Johnson County Stephanie Sichting, Director 1111 Hospital Road Franklin, IN 47670 Tel. (317) 736-9064 [email protected] Prepared by: 1200 Waterway Blvd Indianapolis, IN 46202 www.polis.iupui.edu Acknowledgments Johnson County’s multi-hazard mitigation plan was developed in 2008 and updated in 2015 by The Polis Center at IUPUI. The Johnson County Emergency Management Agency would like to thank The Polis Center and the planning team for their contributions and assistance in development of a plan that will help the county to continue to build its capacity to prevent, protect against, respond to, and recover from disasters. Acronyms AEGL - Acute Exposure Guideline Levels ALOHA - Areal Locations of Hazardous Atmospheres BFE - Base Flood Elevation CAMEO – Computer-Aided Management of Emergency Operations CAPI – Community Action Potential Index CEMP – Comprehensive Emergency Management Plan CRS – Community Rating System DEM – Digital Elevation Model DFIRM – Digital Flood Insurance Rate Map DHS – Department of Homeland Security DMA – Disaster Mitigation Act EAP – Emergency Action Plan EMA – Emergency Management Agency EPA – Environmental Protection Agency FEMA – Federal Emergency Management Agency FIRM – Flood Insurance Rate Maps GIS – Geographic Information System HazMat – Hazardous Materials Hazus-MH – Hazards USA Multi-Hazard HUC – Hydrologic Unit Code IDEM – Indiana Department of Environmental Management IDHS – Indiana Department of Homeland Security INDOT – Indiana Department of Transportation IDNR – Indiana Department of Natural Resources IGS – Indiana Geological Survey ISDA – Indiana State Department of Agriculture MHMP – Multi-Hazard Mitigation Plan NCDC – National Climatic Data Center NEHRP – National Earthquake Hazards Reduction Program NFIP – National Flood Insurance Program NOAA – National Oceanic and Atmospheric Administration NSF – National Science Foundation NWS – National Weather Service OCRA – Office of Community and Rural Affairs PPM – Parts Per Million SPC – Storm Prediction Center USACE – United States Army Corps of Engineers USDA – United States Department of Agriculture USGS – United States Geological Survey Table of Contents Executive Summary ....................................................................................................................................... 1 Section 1: Introduction ................................................................................................................................. 2 Section 2: Prerequisites ................................................................................................................................ 4 2.1 Multi-Jurisdictional Plan Adoption ..................................................................................................... 4 2.2 Jurisdiction Participation .................................................................................................................... 4 Section 3: Planning Process .......................................................................................................................... 6 3.1 Planning Team Information ................................................................................................................ 7 3.2 Review of Existing Plans...................................................................................................................... 8 3.3 Review of Technical and Fiscal Resources .......................................................................................... 9 3.4 Public Involvement ........................................................................................................................... 10 3.5 Neighboring County and Community Participation ......................................................................... 10 Section 4: County Profile ............................................................................................................................. 11 4.1 Geography, Topography, and Climate .............................................................................................. 13 4.2 Demography ..................................................................................................................................... 14 4.3 Population Change............................................................................................................................ 17 4.4 Special Needs Populations ................................................................................................................ 18 4.5 Economy and Industry ...................................................................................................................... 20 4.7 Transportation .................................................................................................................................. 24 4.8 Major Waterways and Watersheds .................................................................................................. 26 4.9 Land-Use and Development Trends ................................................................................................. 27 Section 5: Risk Assessment ......................................................................................................................... 30 5.1 Identifying Hazards .......................................................................................................................... 30 5.1.1 Existing Plans ............................................................................................................................. 30 5.1.2 Historical Hazards Records ........................................................................................................ 31 5.1.3 Hazard-Ranking Methodology ................................................................................................... 32 5.1.4 GIS and Hazus-MH Modeling .................................................................................................... 34 5.2 Assessing Vulnerability .................................................................................................................... 35 5.2.1 Identify Facilities ....................................................................................................................... 36 5.2.2 Facility Replacement Costs ........................................................................................................ 37 5.3 Profiling Hazards .............................................................................................................................. 37 5.3.1 Tornadoes ................................................................................................................................. 37 5.3.2 Flood Hazard ............................................................................................................................. 45 5.3.3 Earthquake Hazard .................................................................................................................... 60 5.3.4 Severe Thunderstorm Hazard ................................................................................................... 72 5.3.5 Winter Storm Hazard ................................................................................................................ 77 5.3.6 Hazardous Materials Release Hazard ........................................................................................ 80 5.3. 7 Dam/Levee Failure Hazard ....................................................................................................... 89 5.3.8 Drought Hazard ......................................................................................................................... 93 Section 6: Mitigation Strategies .................................................................................................................. 95 6.1 Community Action Potential Index (CAPI) ....................................................................................... 95 6.2 Plans and Ordinances ....................................................................................................................... 98 6.3 Mitigation Goals ............................................................................................................................... 99 6.4 Mitigation Process, Prioritization, and Implementation .................................................................. 99 6.5 Multi-Jurisdictional Mitigation Strategy and Actions ..................................................................... 102 6.6 Multi-Jurisdictional Mitigation Strategy ......................................................................................... 117 Section 7: Plan Maintenance .................................................................................................................... 118 7.1 Monitoring, Evaluating, and Updating the Plan ............................................................................. 118 7.2 Implementation through Existing Programs .................................................................................. 119 7.3 Continued Public Involvement ....................................................................................................... 119 Appendix A: Meeting Minutes ................................................................................................................. 121 Appendix B: Local Media News, 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