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Grant County, Oregon MULTI-JURISDICTIONAL NATURAL HAZARDS MITIGATION PLAN

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Grant County, Oregon MULTI-JURISDICTIONAL NATURAL HAZARDS MITIGATION PLAN Grant County, Oregon MULTI-JURISDICTIONAL NATURAL HAZARDS MITIGATION PLAN Grant County City of John Day Grant Soil and Water Grant County Education Conservation District Service District Effective Acknowledgments Grant County Multi-Jurisdictional Natural Hazards Mitigation Plan Update Steering Committee Grant County Ted Williams, Chair, Emergency Manager Grant County Education Service District Scott Myers, County Judge Robert Waltenburg, Superintendent Hilary McNary, former Planning Director Shannon Springing, current Planning Director John Day School District Haley Walker, Grant County Regional Airport Manager Bret Uptmor, Superintendent City of John Day Grant Soil and Water Conservation District Nicholas Green, City Manager Daisy Goebel, Planner Jason Kehrberg, former District Manager Kyle Sullivan, current District Manager City of Canyon City Steve Fisher, Mayor Blue Mountain Hospital District Don Mooney, Canyon City Council Rebekah Rand, Emergency Preparedness Director County Wildfire Protection Coordinator Blue Mountain Home Health & Hospice Irene Jerome Krista Qual, Hospice Aide State and Federal Agencies Federal Emergency Management Agency, Region X James Grabowsky Oregon Military Department, Office of Emergency Management Oregon Department of Land Conservation and Joseph Murray, Christine O’Day, Nicole Hanson Development Tamra Mabbot and Marian Lahav Oregon Department of Forestry Jana Peterson Oregon Department of Geology and Mineral Industries Matt Williams, Christina Appleby Other Contributors Blue Mountain Forest Partners Federal Guidance and Review Team Mark Webb Federal Emergency Management Agency Region X, Mitigation Division Project Managers Brett Holt, Amanda Siok Oregon Department of Land Conservation and Development Desktop Publisher Katherine Daniel and Jason Gately Oregon Department of Geology and Mineral Industries Deb Schueller Grant County Ted Williams Funding for the Grant County Multi-Jurisdictional Natural Hazards Mitigation Plan Update was provided in part by grants EMS-2018-PC-0003 and PDMC-PL-10-OR-2017-002 from the Federal Emergency Management Agency. Cover photo of Kam Wah Chung courtesy of Jason Gately, other photos from DLCD library or other open sources. 2020 Grant County Multi-Jurisdictional Natural Hazard Mitigation Plan ii Table of Contents List of Figures ........................................................................................................................ v List of Tables ......................................................................................................................... v I. Introduction .................................................................................................................. 1 Natural Hazard Mitigation Planning ..................................................................................................................... 1 What is Natural Hazard Mitigation? .................................................................................................................... 1 Why Develop an NHMP? ...................................................................................................................................... 1 What Federal Requirements Does This Plan Address? ...................................................................................... 2 What is the Policy Framework for Natural Hazards Planning in Oregon? ......................................................... 3 How was the Update to the NHMP Developed? ................................................................................................ 3 Profile of Grant County ........................................................................................................................................ 5 How is the Plan Organized?.................................................................................................................................. 9 Volume I: Basic Plan ............................................................................................................................................. 9 Volume II: Hazard Annexes ................................................................................................................................ 10 Volume III: Mitigation Resources ...................................................................................................................... 10 II. Risk Assessment .......................................................................................................... 12 A. What is a Risk Assessment? .......................................................................................................................... 13 B. Hazard Identification .................................................................................................................................... 15 1. Wildfire ........................................................................................................................................................ 15 2. Winter Storm............................................................................................................................................... 18 3. Flood ............................................................................................................................................................ 19 4. Drought ....................................................................................................................................................... 22 5. Windstorm .................................................................................................................................................. 24 6. Landslide...................................................................................................................................................... 25 7. Volcanic Event ............................................................................................................................................. 29 8. Earthquake .................................................................................................................................................. 30 C. Vulnerability Assessment .............................................................................................................................. 35 1. Hazard Vulnerability Assessment ............................................................................................................... 35 2. Community Vulnerability Assessment ....................................................................................................... 39 D. Risk Analysis ................................................................................................................................................. 44 1. Local Risk Assessment ................................................................................................................................ 44 2. DOGAMI Risk Assessment .......................................................................................................................... 46 III. Mitigation Strategy ..................................................................................................... 59 A. Introduction ................................................................................................................................................. 60 B. Mission and Goals ........................................................................................................................................ 60 C. Mitigation Actions ........................................................................................................................................ 61 D. Integration ................................................................................................................................................... 73 Governmental Capacity...................................................................................................................................... 73 Community Organizations and Programs ......................................................................................................... 75 E. Tools and Assets ........................................................................................................................................... 77 F. Prioritizing Natural Hazard Mitigation Projects ............................................................................................. 78 IV. Plan Implementation and Maintenance ....................................................................... 79 A. Assets, Capabilities and Success Stories ........................................................................................................ 79 B. Implementing the Plan ................................................................................................................................. 80 Plan Adoption ..................................................................................................................................................... 80 Convener ............................................................................................................................................................. 81 Coordinating Body .............................................................................................................................................. 81 Implementation through Existing Programs ..................................................................................................... 82 2020 Grant County Multi-Jurisdictional
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