Richmond-Crater Multi-Regional Hazard Mitigation Plan 2017-2022 February 17, 2017 Draft Table of Contents 1.0 Executive Summary .................................................................................................................................... 1 1.1 Hazard Identification and Risk Assessment .................................................................... 1 1.2 Capability Assessment ...................................................................................................... 4 1.3 Mitigation Strategy ............................................................................................................ 5 1.4 Plan Maintenance Procedures .......................................................................................... 6 1.5 Conclusion .......................................................................................................................... 6 2.0 Introduction .......................................................................................................................................... 1 2.1 Mitigation ........................................................................................................................... 1 2.2 The Local Mitigation Planning Impetus .......................................................................... 2 2.3 Organization of the Plan ................................................................................................... 3 3.0 Planning Process ........................................................................................................................................ 1 3.1 The Hazard Mitigation Technical Advisory Committee .................................................. 2 3.2 Public Participation and Stakeholder Input .................................................................... 8 3.3 Incorporation of Existing Plans and Studies ................................................................. 10 3.4 Method and Schedule for Keeping the Plan Current .................................................... 11 4.0 Community Profile ..................................................................................................................................... 1 4.1 Introduction ........................................................................................................................ 1 4.2 Physiography ...................................................................................................................... 2 4.3 Hydrology ........................................................................................................................... 3 4.4 Climate ............................................................................................................................... 3 4.5 Land Use and Development Trends ................................................................................. 4 4.5.1 Charles City County ................................................................................................. 4 4.5.2 Chesterfield County .................................................................................................. 5 4.5.3 City of Colonial Heights ........................................................................................... 5 4.5.4 Dinwiddie County ..................................................................................................... 5 4.5.5 City of Emporia......................................................................................................... 6 4.5.6 Goochland County .................................................................................................... 7 4.5.7 Greensville County .................................................................................................... 7 4.5.8 Hanover County and the Town of Ashland ............................................................. 7 4.5.9 Henrico County ......................................................................................................... 8 4.5.10 City of Hopewell ...................................................................................................... 8 4.5.11 New Kent County .................................................................................................... 9 4.5.12 City of Petersburg ................................................................................................... 9 4.5.13 Powhatan County ................................................................................................. 10 4.5.14 Prince George County ........................................................................................... 10 4.5.15 City of Richmond .................................................................................................. 11 4.5.16 Surry County ........................................................................................................ 11 4.5.17 Sussex County ....................................................................................................... 12 4.6 Population ........................................................................................................................ 13 4.6.1 Race and Sex ........................................................................................................... 13 4.6.2 Language ................................................................................................................. 14 4.6.3 Age ........................................................................................................................... 14 4.6.4 Education ................................................................................................................ 14 4.6.5 Income ..................................................................................................................... 14 4.7 Housing ............................................................................................................................. 15 4.8 Business and Labor ......................................................................................................... 16 i 4.9 Transportation ................................................................................................................. 23 4.10 Infrastructure ................................................................................................................. 24 4.10.1 Electric .................................................................................................................. 24 4.10.2 Natural Gas .......................................................................................................... 25 4.10.3 Telephone .............................................................................................................. 25 4.10.4 Public Water and Wastewater .............................................................................. 25 4.10.5 Internet .................................................................................................................. 26 5.0 Hazard Identification and Risk Assessment (HIRA) ...................................................................................... 1 5.1 Critical Facilities ............................................................................................................... 1 5.2 Land Cover and Land Use ................................................................................................. 2 5.3 Data Limitations ................................................................................................................ 3 5.4 Hazard Identification ........................................................................................................ 4 5.4.1 Types of Hazards ...................................................................................................... 4 5.4.2 Planning Consideration ........................................................................................... 5 5.4.3 Analysis and Data Sources ...................................................................................... 6 5.5 Major Disasters .................................................................................................................. 9 5.6 Flooding ............................................................................................................................ 10 5.6.1 Hazard Profile ........................................................................................................ 10 5.6.2 Magnitude or Severity ............................................................................................ 10 5.6.3 Hazard Areas .......................................................................................................... 12 5.6.4 Hazard History ....................................................................................................... 12 5.6.5 Hydrology ................................................................................................................ 14 5.6.6 Flood Maps ............................................................................................................. 17 5.6.7 National Flood Insurance Program ...................................................................... 19 5.6.8 FEMA Repetitive Loss and Severe Repetitive Loss Properties ............................. 22 5.6.9 Vulnerability Analysis ............................................................................................ 25 5.7 Wind (including Hurricanes and Thunderstorms) ......................................................... 32 5.7.1 Hazard