Res 2018-025/adopting the 2018 Hays County, Texas Hazard Mitigation Plan as the official plan of the City; authorizing the inclusion of the City of San Marcos Hazard Mitigation Plan as an appendix; designating the City Manager as the official authorized

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Hays County Hazard Mitigation Plan Table of Contents Table of Contents Executive Summary ................................................................................................................1 Background of Mitigation Planning ........................................................................................................................................1 History of Hays County Mitigation Planning ...........................................................................................................................1 The Hays County Hazard Mitigation Plan Update ...........................................................................................................1 The Planning/Update Process ................................................................................................................................................2 Hazards and Risks ..................................................................................................................................................................3 Summary of Goals and Actions ..............................................................................................................................................4 Approval and Adoption Processes ..........................................................................................................................................4 Implementation Process ........................................................................................................................................................4 Incorporation/Integration with Other Plans ...........................................................................................................................4 Monitoring and Updating Processes.......................................................................................................................................4 Acknowledgments .................................................................................................................................................................5 Introduction .............................................................................................................................6 Background of Hazard Mitigation and Mitigation Planning .....................................................................................................6 History of Hays County Mitigation Planning ...........................................................................................................................6 The Hays County Hazard Mitigation Plan Update ...........................................................................................................7 Chapter 1: Organize and Review ..........................................................................................9 1.1 Purpose of Organize and Review Process .........................................................................................................................9 1.2 Hays County Plan Update Goals........................................................................................................................................9 1.3 Hays County Hazard Mitigation Plan Update Process and Schedule ................................................................................10 1.4 Jurisdictions/Planners Participation ...............................................................................................................................11 1.5 Stakeholders Participation .............................................................................................................................................14 1.6 Public Participation ........................................................................................................................................................19 1.7 Resource Review ............................................................................................................................................................22 1.8 Maintenance ..................................................................................................................................................................23 Chapter 2: Risk Assessment ................................................................................................26 2.1 Step 1. Describe Hazards ................................................................................................................................................26 Drought ...............................................................................................................................................................................28 Extreme Heat .......................................................................................................................................................................33 Severe Winter Storms ..........................................................................................................................................................38 Lightning ..............................................................................................................................................................................45 Hailstorm .............................................................................................................................................................................49 Windstorms .........................................................................................................................................................................50 Windstorms: Description .....................................................................................................................................................50 Tornadoes ............................................................................................................................................................................51 Expansive Soils .....................................................................................................................................................................53 Floods ..................................................................................................................................................................................54 Hurricanes/Tropical Storms ..................................................................................................................................................55 Earthquakes .........................................................................................................................................................................56 Dam/Levee Failure ...............................................................................................................................................................57 Wildfires ..............................................................................................................................................................................58 2.2 Step 2. Identify Community Assets .................................................................................................................................59 2.3 Step 3. Analyze Risks ......................................................................................................................................................61 2.4 Step 4. Summarize Vulnerabilities ..................................................................................................................................62 Chapter 3: Mitigation Strategy ..............................................................................................64 3.1 Step 1. Set/Update Mitigation Goals ..............................................................................................................................64 3.2 Step 2. Identify/Update Mitigation Actions ....................................................................................................................65 3.3 Step 3. Assess/Update Capabilities .................................................................................................................................65 3.4 Step 4. Evaluate and Prioritize Actions (Mitigation Action Plan) ....................................................................................65 3.5 Step 5. Integrate into Existing Plans and Procedures ......................................................................................................69 Chapter 4: Finalize Plan Update ...........................................................................................70 4.1 Approval and Adoption Procedure .................................................................................................................................70 References .............................................................................................................................74 i