Potter/Randall County Mitigation Action Plan This Plan Covers: Potter and Randall Counties, the City of Amarillo, the Village of Lake Tanglewood and the Panhandle Regional Planning Commission DEVELOPED BY THE AMARILLO/POTTER/RANDALL COUNTY HAZARD MITIGATION ACTION TEAM (MAT) July 2015 Amarillo/Potter/Randall County 2014 Mitigation Action Plan TABLE OF CONTENTS EXECUTIVE SUMMARY ............................................................................................................ 1 National Flood Insurance Program ........................................................................................ 3 County Overview and Demographics .................................................................................... 5 SECTION I – ADOPTION ......................................................................................................... 14 SECTION II – AUTHORITY ...................................................................................................... 14 SECTION III – PURPOSE ......................................................................................................... 15 SECTION IV – ORGANZING ASSETS ..................................................................................... 17 Establishing the Mitigation Action Team (MAT) ................................................................... 17 Establishing an Open Public Process .................................................................................. 27 SECTION V – ASSESSING RISKS .......................................................................................... 29 Dam Failure Description ...................................................................................................... 30 Drought Description............................................................................................................. 31 Flooding Description............................................................................................................ 34 Foreign Animal Disease Outbreak Description .................................................................... 35 Hail or Hailstorms ................................................................................................................ 36 Severe Thunderstorm Description ...................................................................................... 37 Tornadoes Description ........................................................................................................ 40 Wildfire Description ............................................................................................................. 42 Winter Storms Description ................................................................................................... 44 Hazard History ......................................................................................................................... 47 Dam Failure ........................................................................................................................ 47 Drought ............................................................................................................................... 51 Flooding .............................................................................................................................. 57 Foreign Animal Disease Outbreak ....................................................................................... 62 Hail or Hailstorms ................................................................................................................ 65 Severe Thunderstorms ........................................................................................................ 71 Tornadoes ........................................................................................................................... 76 Wildfires .............................................................................................................................. 80 Winter Storms ..................................................................................................................... 84 Hazard Vulnerabilities Summary ......................................................................................... 88 Probability of Future Events .................................................................................................. 94 Dam Failure ........................................................................................................................ 94 Drought ............................................................................................................................... 94 Flooding .............................................................................................................................. 96 Foreign Animal Disease Outbreak ....................................................................................... 97 Hail or Hailstorms ................................................................................................................ 98 Severe Thunderstorms ........................................................................................................ 99 Tornadoes ......................................................................................................................... 100 ii Amarillo/Potter/Randall County 2014 Mitigation Action Plan Wildfires ............................................................................................................................ 101 Winter Storms ................................................................................................................... 102 Estimate of Potential Losses ............................................................................................... 104 Dam Failure ............................................................................................................................ 106 Drought ................................................................................................................................... 106 Flooding .................................................................................................................................. 107 Foreign Animal Disease Outbreak........................................................................................... 107 Hail or Hailstorms .................................................................................................................... 108 Severe Thunderstorm ............................................................................................................. 108 Tornadoes ............................................................................................................................... 109 Wildfires .................................................................................................................................. 109 Winter Storms ......................................................................................................................... 110 Past Mitigation ...................................................................................................................... 111 Status of Previously Identified Mitigation Actions .................................................................... 114 Development Trends ............................................................................................................. 128 Incorporated Planning Mechanisms .................................................................................... 132 SECTION VI – DEVELOP MITIGATION ACTION PLAN ........................................................ 140 Goals and Objectives .............................................................................................................. 140 Action Plan / Cost Benefit Review ........................................................................................ 141 Action Plan / STAPLE/E ....................................................................................................... 142 Mitigation Action Items – Dam Failure ............................................................................... 144 Mitigation Action Items – Drought ...................................................................................... 147 Mitigation Action Items – Flooding ..................................................................................... 153 Mitigation Action Items – Foreign Animal Disease Outbreak ............................................. 158 Mitigation Action Items – Hail or Hailstorms ...................................................................... 164 Mitigation Action Items – Severe Thunderstorms .............................................................. 172 Mitigation Action Items - Tornadoes .................................................................................. 177 Mitigation Action Items – Wildfires ..................................................................................... 186 Mitigation Action Items - Winter Storms ............................................................................. 194 Mitigation Action Items – Regional Hazard Mitigation ........................................................ 202 Monitoring ............................................................................................................................. 203 Evaluating .............................................................................................................................. 203 Plan Updates....................................................................................................................