2017 La Paz County Multi-Jurisdictional Hazard Mitigation Plan Developed by: La Paz County Town of Parker Town of Quartzsite LA PAZ COUNTY MULTI-JURISDICTIONAL HAZARD MITIGATION PLAN 2017 LA PAZ COUNTY MULTI-JURISDICTIONAL HAZARD MITIGATION PLAN 2017 TABLE OF CONTENTS SECTION 1: INTRODUCTION ................................................................................................................. 1 1.1 Purpose .............................................................................................................................. 1 1.2 Background and Scope ..................................................................................................... 1 1.3 Plan Organization ............................................................................................................. 2 SECTION 2: COMMUNITY DESCRIPTION .............................................................................................. 3 2.1 General ............................................................................................................................... 3 2.2 County Overview .............................................................................................................. 3 2.3 Jurisdictional Overviews ................................................................................................ 10 2.3.1 Parker ......................................................................................................................... 10 2.3.2 Quartzsite ................................................................................................................... 12 SECTION 3: PLANNING PROCESS ....................................................................................................... 14 3.1 Primary Point of Contact ............................................................................................... 14 3.2 Planning Team and Activities ........................................................................................ 14 3.3 Public and Stakeholder Involvement ............................................................................ 17 3.4 Reference Documents and Technical Resources .......................................................... 18 SECTION 4: RISK ASSESSMENT .......................................................................................................... 21 4.1 Hazard Identification and Screening ............................................................................ 21 4.2 Vulnerability Analysis Methodology ............................................................................. 22 4.2.1 General ....................................................................................................................... 22 4.2.2 Calculated Priority Risk Index (CPRI) Evaluation .................................................... 22 4.2.3 Asset Inventory .......................................................................................................... 24 4.2.4 Loss Estimations ........................................................................................................ 25 4.2.5 Development Trend Analysis ..................................................................................... 27 4.3 Hazard Risk Profiles ....................................................................................................... 27 4.3.1 Dam Failure ................................................................................................................ 28 4.3.2 Drought....................................................................................................................... 34 4.3.3 Flood / Flash Flood .................................................................................................... 42 4.3.4 Hazardous Materials Incidents ................................................................................... 49 4.3.5 Severe Wind ............................................................................................................... 53 4.4 Risk Assessment Summary ............................................................................................ 62 SECTION 5: MITIGATION STRATEGY ................................................................................................. 63 5.1 Hazard Mitigation Goals and Objectives ..................................................................... 63 5.2 Capability Assessment .................................................................................................... 64 5.3 Mitigation Actions/Projects............................................................................................ 70 SECTION 6: PLAN MAINTENANCE PROCEDURES.............................................................................. 78 6.1 Monitoring and Evaluation ............................................................................................ 78 6.2 Plan Update ......................................................................... Error! Bookmark not defined. 6.3 Incorporation into Existing Planning Mechanisms ..................................................... 79 6.4 Continued Public and Stakeholder Involvement ......................................................... 80 APPENDIX A: PLAN TOOLS ................................................................................................................. 82 Acronyms ........................................................................................................................................ 82 LIST OF MAPS i LA PAZ COUNTY MULTI-JURISDICTIONAL HAZARD MITIGATION PLAN 2017 LIST OF TABLES TABLE 2-1: POPULATION ESTIMATES FOR LA PAZ COUNTY ............................................................. 9 TABLE 3-1: PRIMARY POINTS OF CONTACT ................................. ERROR! BOOKMARK NOT DEFINED. TABLE 3-2: PLANNING TEAM ............................................................................................................. 14 TABLE 3-3: RESOURCE DOCUMENTS AND REFERENCES REVIEWED AND INCORPORATED IN THE PLAN ..................................................................................................................................................... 18 TABLE 4-1: INITIAL HAZARD IDENTIFICATION LISTS .................. ERROR! BOOKMARK NOT DEFINED. TABLE 4-2: EXPENDITURES FOR DECLARED HAZARD EVENTS THAT INCLUDED LA PAZ CO – FEBRUARY 1966 TO AUGUST 2010 ..................................................................................................... 21 TABLE 4-3: HUMAN AND PROPERTY LOSS ESTIMATES FOR DECLARED EVENTS THAT INCLUDED LA PAZ CO JANUARY 1966 TO AUGUST 2010 ................................ ERROR! BOOKMARK NOT DEFINED. TABLE 4-4: CALCULATED PRIORITY RISK INDEX (CPRI) CATEGORIES AND RISK LEVELS ......... 22 TABLE 4-5: ASSET INVENTORY COUNTS AS OF JULY 2011............................................................... 25 TABLE 4-6: ADWR SAFETY CATEGORIES ........................................................................................ 29 TABLE 4-7: DOWNSTREAM HAZARD POTENTIAL CLASSES FOR STATE REGULATED DAMS ......... 30 TABLE 4-8: NID AND ADWR DAMS BY HAZARD CLASSIFICATION ................................................ 31 TABLE 4-9: CPRI RESULTS FOR DAM FAILURE ............................................................................... 31 TABLE 4-10: LA PAZ COUNTY EXPOSURE AND LOSS ESTIMATES DUE TO DAM FAILURE ............ 32 TABLE 4-11: CPRI RESULTS FOR DROUGHT .................................................................................... 39 TABLE 4-12: CPRI RESULTS FOR FLOODING ................................................................................... 44 TABLE 4-13: LA PAZ COUNTY EXPOSURE AND LOSS ESTIMATES DUE TO FLOODING .................. 45 TABLE 4-14: 2007 PLAN COUNTY-WIDE FLOODING VULNERABILITY ANALYSIS COMPARISON TO THE PLAN ESTIMATES ..................................................................... ERROR! BOOKMARK NOT DEFINED. TABLE 4-15: NFIP STATUS AND STATISTICS FOR LA PAZ COUNTY, AUGUST 31, 2011 ................ 46 TABLE 4-16: REPETITIVE LOSS PROPERTY STATISTICS FOR LA PAZ COUNTY JURISDICTIONS .. 47 TABLE 4-17: CPRI RESULTS FOR HAZMAT ...................................................................................... 50 TABLE 4-18: LA PAZ COUNTY EXPOSURE ESTIMATES DUE TO HAZMAT ...................................... 51 TABLE 4-19: 2007 PLAN COUNTY-WIDE HAZMAT VULNERABILITY ANALYSIS COMPARISON TO THE 2012 PLAN ESTIMATES ............................................................ ERROR! BOOKMARK NOT DEFINED. TABLE 4-20: FUJITA TORNADO SCALE ............................................................................................. 55 TABLE 4-21: CPRI RESULTS FOR SEVERE WIND ............................................................................. 55 TABLE 4-22: CPRI RESULTS BY JURISDICTION FOR WILDFIRE ...................................................... 59 TABLE 4-23: LA PAZ COUNTY EXPOSURE AND LOSS ESTIMATES DUE TO WILDFIRE ................... 60 TABLE 4-24: HAZARDS TO BE MITIGATED BY JURISDICTIONS ....................................................... 62 TABLE 5-2-1: CAPABILITY ASSESSMENT FOR LA PAZ COUNTY ...................................................... 64 TABLE 5-2-2: CAPABILITY ASSESSMENT FOR PARKER ............... ERROR! BOOKMARK NOT DEFINED. ii LA PAZ COUNTY MULTI-JURISDICTIONAL HAZARD MITIGATION PLAN 2017 TABLE 5-2-3: CAPABILITY ASSESSMENT FOR QUARTZSITE ........ ERROR! BOOKMARK NOT DEFINED. TABLE 5-3-1: LA PAZ COUNTY ASSESSMENT OF PREVIOUS PLAN CYCLE MITIGATION ACTIONS/PROJECTS .......................................................................