Polk County Hazard Mitigation Plan
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POLK COUNTY MULTI-JURISDICTION HAZARD MITIGATION PLAN VERSION 3.2 Polk County Texas & Cities of Livingston, Corrigan, Goodrich, Onalaska, & Seven Oaks Developed in accordance with PUBLIC LAW 106–390—OCT. 30, 2000 (Disaster Mitigation Act of 2000), et al. by the Polk County Hazard Mitigation Team with assistance from MPTX Associates. ACKNOWLEDGEMENTS Preparation of this multi-jurisdiction hazard mitigation action plan involved collaboration among public, private and non-profit organizations including: Polk County and the Cities of Livingston, Corrigan, Goodrich, Onalaska, and Seven Oaks, Deep East Texas Council of Governments, Trinity River Authority, Texas Forest Service, representatives of private industry, the Texas Division of Emergency Management, among numerous others. The work of the Polk County Hazard Mitigation Taskforce (HMT) has made this project possible, led by the Polk County Office of Emergency Management. Numerous elected officials and city, county, regional and state personnel participated in the planning process and contributed greatly to this plan’s development. Sincere thanks goes out to all HMT participants and their staff for their work, information sharing, and ideas. A complete listing of the Hazard Mitigation Taskforce is provided in Section 2.1. The Polk County Judge’s Office, Commissioner’s Court, and participating community administration and staff deserve special recognition for their exceptional contributions to this project. Specific thanks goes out to Polk County Office of Emergency Management (Polk County OEM). Polk County EMC Courtney Comstock is recognized for her excellent work throughout this project and on previous version of this Hazard Mitigation Plan, Larry Pitts for his exceptional guidance and leadership on this project, and Linda Hicks for her assistance, mapping and data contributions to this plan and previous version. Finally, thanks to the staff of MPTX Associates for their work to facilitate the planning process, collect and compile data, and prepare this document. Polk County OEM MPTX Associates, Inc. GREG J. WOBBE, CFM, PRINCIPAL KRISTI DAVIS, PROJECT MANAGER COURTNEY COMSTOCK, EMC MITCHELL OSBURN, CFM, MITIGATION DIRECTOR LARRY PITTS (RET.) JOHN STREEB, GIS/IT DIRECTOR LINDA HICKS, GIS POLK COUNTY MULTI-JURISDICTION HAZARD MITIGATION PLAN (2018-2023) PAGE 2 Table of Contents Chapter 1. Introduction ............................................................................................................ 5 1.1 Executive Summary ......................................................................................................... 5 1.2 Authorities ........................................................................................................................ 5 1.3 Document Structure ......................................................................................................... 7 1.4 2017 Update-Version 3.0 ................................................................................................. 7 1.5 Participating Jurisdictions ................................................................................................. 8 1.5.1 County Profile ............................................................................................................ 9 1.5.2 Disaster Declaration History .....................................................................................13 1.5.3 Hazard Events, Polk County: 2012-2017 ..................................................................14 1.5.4 City Profiles ..............................................................................................................15 Chapter 2. Planning Process ..................................................................................................25 2.1 Hazard Mitigation Taskforce ............................................................................................26 2.2 Multi-Jurisdiction Participation .........................................................................................31 2.3 Team Meetings ...............................................................................................................32 2.4 Public Involvement and Participation ...............................................................................34 2.5 Adoption ..........................................................................................................................38 2.6 Implementation, Monitoring, Evaluation, and Update ......................................................38 2.7 Incorporation into Existing and Future Planning Documents............................................39 2.7.1 Integration of Studies and Existing Planning Mechanisms ........................................39 2.7.2 Technical Data Sources and Data Limitations ..........................................................41 2.8 Continued Public Involvement .........................................................................................43 Chapter 3. Risk Assessment ..................................................................................................44 3.1 Identifying Hazards .........................................................................................................45 3.1.1 Methods and Definitions ...........................................................................................46 3.1.2 Data Sources and Data Limitations...........................................................................47 3.2 Risk Assessment - Exposure ...........................................................................................48 3.2.1 Risk Assessment Per Jurisdiction .............................................................................49 3.2.2 Repetitive Loss Properties – NFIP Flood Insurance Claims ......................................55 3.2.3 Critical Facilities and Infrastructure ...........................................................................59 3.2.4 Land Use and Development Trends .........................................................................64 3.3 Hazard Profiles................................................................................................................65 3.3.1 Flood ........................................................................................................................65 3.3.2 Hurricane ..................................................................................................................97 3.3.3 Tornado .................................................................................................................. 110 3.3.4 Thunderstorm Winds .............................................................................................. 116 POLK COUNTY MULTI-JURISDICTION HAZARD MITIGATION PLAN (2018-2023) PAGE 3 3.3.5 Wildfire ................................................................................................................... 119 3.2.6 Winter Storm .......................................................................................................... 130 3.3.7 Lightning ................................................................................................................. 134 3.3.8 Drought .................................................................................................................. 136 3.3.9 Earthquake ............................................................................................................. 142 3.3.10 Hail ....................................................................................................................... 146 3.3.11 Extreme Heat ....................................................................................................... 149 Chapter 4. Mitigation Strategy ............................................................................................. 154 4.1 Local Hazard Mitigation Goals and Objectives .............................................................. 154 4.1.1 Mitigation Objectives .............................................................................................. 155 4.2 Action Item Identification and Prioritization .................................................................... 157 4.2.1 Action Item Identification ......................................................................................... 157 4.2.2 Action Item Prioritization Criteria and Process ........................................................ 157 4.3 Action Items .................................................................................................................. 161 4.4 Jurisdiction Specific Actions .......................................................................................... 165 4.5 National Flood Insurance Program Participation ............................................................ 174 Appendices ........................................................................................................................... 176 Appendix A. Adoption Documents ....................................................................................... 177 Appendix B: State of Texas Strategy Guidelines for HMGP Projects ................................... 183 Appendix C. Previous Action Item Status Report ................................................................ 185 Appendix D: Housing and Populations ................................................................................ 216 Appendix E. Historical Markers and Community Events ...................................................... 223 Appendix F. Existing