To be replaced with Cover YUMA COUNTY MULTI-JURISDICTIONAL HAZARD MITIGATION PLAN 2018 TABLE OF CONTENTS SECTION 1: JURISDICTIONAL ADOPTION AND FEMA APPROVAL .................................................... 3 1.1 DMA 2000 Requirements ............................................................................................................... 3 1.1.1 General Requirements ................................................................................................................ 3 1.1.2 Update Requirements ................................................................................................................. 3 1.1.3 Tribal Government Assurances .................................................................................................. 3 1.2 Official Record of Adoption ........................................................................................................... 3 1.3 FEMA Approval Letter .................................................................................................................. 4 SECTION 2: INTRODUCTION ................................................................................................................. 6 2.1 Plan History ..................................................................................................................................... 6 2.2 Plan Purpose and Authority ........................................................................................................... 6 2.3 General Plan Description ............................................................................................................... 6 2.4 Overall Plan Update Process .......................................................................................................... 6 SECTION 3: COMMUNITY DESCRIPTIONS ........................................................................................... 8 3.1 General ............................................................................................................................................. 8 3.2 County Overview............................................................................................................................. 8 3.2.1 History & Geography ................................................................................................................. 8 3.2.2 Climate ..................................................................................................................................... 12 3.2.3 Population ................................................................................................................................ 15 3.2.4 Economy .................................................................................................................................. 15 3.3 Jurisdictional Overviews .............................................................................................................. 20 3.3.1 Cocopah Indian Tribe .............................................................................................................. 20 3.3.2 San Luis ................................................................................................................................... 21 3.3.3 Somerton .................................................................................................................................. 23 3.3.4 Wellton .................................................................................................................................... 26 3.3.5 Yuma........................................................................................................................................ 28 SECTION 4: PLANNING PROCESS ....................................................................................................... 31 4.1 Planning Process Description ....................................................................................................... 31 4.2 Previous Planning Process Assessment ....................................................................................... 31 4.3 Primary Point of Contact ............................................................................................................. 31 4.4 Planning Team .............................................................................................................................. 32 4.4.1 Planning Team Assembly ........................................................................................................ 33 4.4.2 Planning Team Activities ......................................................................................................... 33 4.4.3 Agency/Organizational Participation ....................................................................................... 34 4.5 Public Involvement ....................................................................................................................... 35 4.6 Reference Documents and Technical Resources ........................................................................ 37 SECTION 5: RISK ASSESSMENT .......................................................................................................... 38 5.1 Hazard Identification and Screening ........................................................................................... 38 5.2 Vulnerability Analysis Methodology ........................................................................................... 40 5.2.1 General ..................................................................................................................................... 40 5.2.2 Calculated Priority Risk Index (CPRI) Evaluation .................................................................. 40 5.2.3 Asset Inventory ........................................................................................................................ 43 5.2.4 Loss Estimations ...................................................................................................................... 44 5.2.5 Development Trend Analysis................................................................................................... 44 5.3 Hazard Risk Profiles ..................................................................................................................... 44 5.3.1 Drought .................................................................................................................................... 46 5.3.3 Extreme Heat (Power Outage) ................................................................................................. 84 5.3.4 Flooding ................................................................................................................................... 91 5.3.5 Severe Wind ........................................................................................................................... 106 5.3.6 Wildfire .................................................................................................................................. 117 Page i YUMA COUNTY MULTI-JURISDICTIONAL HAZARD MITIGATION PLAN 2018 5.4 Risk Assessment Summary .........................................................................................................125 SECTION 6: MITIGATION STRATEGY............................................................................................... 126 6.1 Hazard Mitigation Goals and Objectives ..................................................................................126 6.2 Capability Assessment ................................................................................................................126 6.2.1 Jurisdictional Capabilities ......................................................................................................128 6.2.2 Historical Mitigation Activities ..............................................................................................141 6.2.3 National Flood Insurance Program Participation ...................................................................141 6.3 Mitigation Actions/Projects and Implementation Strategy .....................................................143 6.3.1 Previous Mitigation Actions/Projects Assessment .................................................................143 6.3.2 New Mitigation Actions / Projects and Implementation Strategy ..........................................156 6.3.3 Potential Funding Sources .....................................................................................................181 SECTION 7: PLAN MAINTENANCE PROCEDURES ........................................................................... 182 7.1 Monitoring and Evaluation ........................................................................................................182 7.2 Plan Update .................................................................................................................................182 7.3 Incorporation Into Existing Planning Mechanisms .................................................................183 7.4 Continued Public Involvement ...................................................................................................184 SECTION 8: PLAN TOOLS .................................................................................................................. 185 8.1 Acronyms .....................................................................................................................................185 8.2 Definitions ....................................................................................................................................186