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Nevada 89701 LATE MATERIAL Item # 19 Meeting Date: 08/04/16 Carson City Hazard Mitigation Plan 2016 This page is left intentionally blank. Carson City Hazard Mitigation Plan 777 S. Stewart Street Carson City, Nevada 89701 March 2016 This page is left intentionally blank. TABLE OF CONTENTS Executive Summary ............................................................................................................................... ES-1 1. Official Record of Adoption ........................................................................................... 1-1 1.1 Disaster Mitigation Act of 2000 .............................................................. 1-1 1.2 Adoption by the Local Governing Body and Supporting Document ...... 1-1 2. Background ..................................................................................................................... 2-1 2.1 Plan Purpose and Authority ..................................................................... 2-1 2.2 Stafford Act Grant Programs ................................................................... 2-1 2.3 Plan Organization..................................................................................... 2-2 3. Community Description ................................................................................................. 3-1 3.1 History, Location, and Geography ........................................................... 3-1 3.2 Government.............................................................................................. 3-3 3.3 Demographics .......................................................................................... 3-5 3.4 Land Use and Development Trends ......................................................... 3-6 4. Planning Process ........................................................................................................... 4-1 4.1 Overview of Planning Process ................................................................. 4-1 4.2 Hazard Mitigation Planning Committee .................................................. 4-3 4.2.1 Formation of the Planning Committee ......................................... 4-3 4.2.2 Planning Committee Meetings & Monthly Progress ................... 4-6 4.3 Public Involvement .................................................................................. 4-8 4.4 Incorporation of Existing Plans and Other Relevant Information ........... 4-9 5. Risk Assessment ............................................................................................................ 5-1 5.1 Hazard Identification and Screening ........................................................ 5-1 5.2 Hazard Profiles......................................................................................... 5-5 5.2.1 Acts of Violence .......................................................................... 5-6 5.2.2 Avalanche .................................................................................. 5-11 5.2.3 Drought ...................................................................................... 5-12 5.2.4 Earthquake ................................................................................. 5-16 5.2.5 Floods ......................................................................................... 5-22 5.2.6 Hazardous Materials Events ...................................................... 5-29 5.2.7 Infectious Disease ...................................................................... 5-33 5.2.8 Landslide .................................................................................... 5-41 5.2.9 Severe Weather .......................................................................... 5-45 5.2.10 Utility Loss................................................................................. 5-51 5.2.11 Volcanic Activity ....................................................................... 5-55 5.2.12 Wildland Fire ............................................................................. 5-58 6. Asset Inventory ............................................................................................................... 6-1 TABLE OF CONTENTS 6.1 Asset Inventory ........................................................................................ 6-1 6.1.1 Population and Building Stock .................................................... 6-1 6.1.2 Critical Facilities and Infrastructure ............................................ 6-1 6.2 Methodology ............................................................................................ 6-3 6.3 Data Limitations & Future Development ................................................ 6-3 6.3.1 Future Development..................................................................... 6-4 6.4 Exposure Analysis ................................................................................... 6-4 6.4.1 Drought ........................................................................................ 6-8 6.4.2 Earthquakes .................................................................................. 6-8 6.4.3 Floods ........................................................................................... 6-9 6.4.4 Hazardous Materials Events ........................................................ 6-9 6.4.5 Infectious Disease ...................................................................... 6-10 6.4.6 Severe Weather .......................................................................... 6-10 6.4.7 Utilities ....................................................................................... 6-10 6.4.8 Wildland Fires ............................................................................ 6-10 6.4.9 Volcano ...................................................................................... 6-11 7. Capability Assessment .................................................................................................. 7-1 7.1 Legal and Regulatory Capabilities ........................................................... 7-1 7.2 Administrative and Technical Capabilities .............................................. 7-2 7.3 Financial Capabilities............................................................................... 7-2 7.4 Current Mitigation Capabilities & Analysis ............................................ 7-4 8. Mitigation Strategy ......................................................................................................... 8-1 8.1 Mitigation Goals and Objectives ............................................................. 8-1 8.2 Identifying Mitigation Actions ................................................................ 8-2 8.3 National Flood Insurance Program (NFIP) Compliance ......................... 8-7 8.4 Evaluating and Prioritizing Mitigation Actions ....................................... 8-8 8.5 Implementing a Mitigation Action Plan ................................................ 8-10 9. Plan Maintenance ........................................................................................................... 9-1 9.1 Monitoring, Evaluating, and Updating the HMP ..................................... 9-1 9.2 Implementation through Existing Planning Mechanisms ........................ 9-2 9.3 Continued Public Involvement ................................................................ 9-4 10. References .................................................................................................................... 10-1 List of Tables, Figures and Appendices Tables Table 3-1 Census Data Table 4-1 Plan Outline and Update Effort Table 4-2 Carson City Hazard Mitigation Planning Committee & Participating Agencies Table 5-1 Identification and Screening of Hazards Table 5-2 Vulnerability Ratings Rubric Table 5-3 Hazards Rating Table 5-4 Major Historical Earthquakes That Have Produced Strong Ground Motion in Carson City Table 5-5 Probabilities of Potentially Damaging Earthquakes in Carson City within 50 year and 31 miles (50 km) Table 5-6 Poisson Probabilities of Modified Mercalli Intensity Ground Motions Occurring in Carson City Based on U.S. Geological Survey Hazard Curves Table 5-7 Historical Flash Floods in the Carson River Drainage Table 5-8 Hazardous Material Release in Carson City Table 5-9 Historic Occurrences of Infectious Diseases Registered in Nevada Table 5-10 Utility Distributors Table 5-11 Electrical Generation Sites Table 5-12 High Pressure Natural Gas Transmission Line Table 5-13 Nevada & Carson Summary of Fire History Data, 1999-2014 Table 5-14 Local Carson City Summary of Significant Fire History Data, 2010-2014 Table 6-1 Estimated Population and Building Inventory Table 6-2 Critical Facilities and Infrastructure Table 6-3 Potential Hazard Vulnerability Assessment – Population and Buildings Table 6-4 Potential Hazard Vulnerability Assessment – Critical Facilities Table 6-5 Cost Estimates for a Capitol Suite of Scenario Earthquakes for Nevada Counties Table 7-1 Legal and Regulatory Resources Available for Hazard Mitigation Table 7-2 Administrative and Technical Resources for Hazard Mitigation Table 7-3 Financial Resources for Hazard Mitigation Table 7-4 Carson City Local Mitigation Capability Assessment Table 8-1 Mitigation Goals Table 8-2 Mitigation Goals and Potential Actions Table 8-3 STAPLE+E Evaluation Criteria for Mitigation Actions Table 8-4 Action Plan Matrix List of Tables, Figures and Appendices Figures Figure 5-1 Drought Severity Comparison (April 15, 2014 vs April 7, 2015) Figure 5-2 Drought Severity Comparison (November 29, 2011 vs November 25,
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