Chippewa County Hazard Mitigation Plan Update DRAFT
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Natural Hazard Mitigation Plan Chippewa County, Wisconsin 2020-2025 SECTION I. INTRODUCTION CHIPPEWA COUNTY NATURAL HAZARD MITIGATION PLAN PREPARED BY: Chippewa County Local Emergency Planning Committee Chippewa County Emergency Management Chippewa County communities WITH ASSISTANCE BY: West Central Wisconsin Regional Planning Commission ADOPTED MONTH XX, 2020 BY THE CHIPPEWA COUNTY BOARD OF SUPERVISORS SECTION I. INTRODUCTION <ADD FEMA APPROVAL LETTER HERE> SECTION I. INTRODUCTION <ADD WEM APPROVAL LETTER HERE> TABLE OF CONTENTS SECTION I. INTRODUCTION .............................................................................................. 1 A. PLAN PURPOSE ................................................................................................................. 1 B. PLANNING PROCESS ......................................................................................................... 1 C. MULTI-JURISDICTIONAL PLANNING APPROACH ................................................................... 3 D. COMMUNITY INVOLVEMENT ................................................................................................ 5 E. INCORPORATION OF RELATED PLANS, STUDIES, REPORTS, AND DATA .................................. 6 SECTION II. COMMUNITY PROFILE – CHIPPEWA COUNTY ............................................ 8 A. GEOGRAPHIC LOCATION .................................................................................................... 8 B. NATURAL FEATURES AND ENVIRONMENT ............................................................................ 9 C. DEMOGRAPHIC, ECONOMIC, AND LAND USE PROFILE ........................................................ 13 D. CRITICAL FACILITIES AND EMERGENCY SERVICES ............................................................. 27 E. TRANSPORTATION SYSTEMS ............................................................................................ 32 SECTION III. ASSESSMENT OF HAZARD CONDITIONS .................................................. 34 A. HAZARD IDENTIFICATION .................................................................................................. 34 i. Federal Disaster Declarations for Chippewa County ........................................................... 34 ii. Chippewa County Multi-Hazard Prioritization....................................................................... 35 iii. Natural Hazards of No Significant Risk ................................................................................ 37 B. HAZARDS OF CONCERN ADDRESSED IN OTHER PLANS ...................................................... 40 i. Communicable Disease and Public Health .......................................................................... 40 ii. Hazardous Materials Spills ................................................................................................... 47 iii. Active Threats ...................................................................................................................... 53 iv. Cyber-Attack ......................................................................................................................... 58 C. RISK AND VULNERABILITY ASSESSMENT ........................................................................... 63 i. Tornados .............................................................................................................................. 54 ii. Thunderstorms and High Winds ........................................................................................... 80 iii. Winter Storms and Extreme Cold ......................................................................................... 96 iv. Long-Term Power Outage .................................................................................................. 110 v. Flooding .............................................................................................................................. 120 vi. Wildfire................................................................................................................................ 143 vii. Extreme Heat ..................................................................................................................... 163 viii. Drought ............................................................................................................................... 171 D. CLIMATE CHANGE AND NATURAL HAZARD RISK ............................................................... 178 SECTION IV. CURRENT MITIGATION ACTIVITIES .......................................................... 186 SECTION V. PROGRESS ON 2012 MITIGATION PLAN STRATEGIES ........................... 195 SECTION VI. MITIGATION GOALS AND STRATEGIES .................................................... 200 A. MITIGATION GOALS ....................................................................................................... 200 B. EVALUATION OF ALTERNATIVE MITIGATION STRATEGIES .................................................. 201 C. RECOMMENDED MITIGATION STRATEGIES (ACTION PLAN). .............................................. 202 i. Severe Weather Mitigation Strategies ................................................................................ 202 ii. Flood Mitigation Strategies ................................................................................................. 203 iii. Wildfire Mitigation & Emergency Access Strategies .......................................................... 204 iv. Agriculture-Specific Strategies ........................................................................................... 204 v. Other Planning, Policy, & Coordination Strategies ............................................................ 205 vi. Other Communication & Outreach Strategies .................................................................... 206 vii. City & Village (Multi-Jurisdictional) Strategies.................................................................... 207 D. IMPLEMENTATION OF PRIORITY PROJECTS ...................................................................... 210 E. ADDITIONAL IMPLEMENTATION GUIDANCE ....................................................................... 212 Table of Contents i SECTION I. INTRODUCTION SECTION VII. PLAN ADOPTION AND MAINTENANCE PROCESS .................................. 214 A. PLAN COORDINATION .................................................................................................... 214 B. PLAN MAINTENANCE ...................................................................................................... 215 C. PLAN ADOPTION ............................................................................................................ 217 LIST OF APPENDICES APPENDIX A. Adopting Resolutions and Letter of Participation ........................................... 218 APPENDIX B. Flood Assessment Methodology ......................................................................... APPENDIX C. Stakeholder Interview List ................................................................Page................... #s will be APPENDIX D. Notice Requesting Public Comment on Draft Plan ................................include..............d in APPENDIX E. Vulnerability Assessment for Critical Facilities................................final..................... draft APPENDIX F. Unique Risks and Vulnerabilities by Incorporated Community ............................. APPENDIX G. Hazard Mitigation Activities by Incorporated Community ..................................... APPENDIX H. Chippewa County Dam Inventory ........................................................................ APPENDIX I. Natural Hazard Mitigation Toolbox ...................................................................... APPENDIX J. Feasibility Analysis of Alternative Mitigation Strategies ....................................... APPENDIX K. Potential State and Federal Grant Programs for Mitigations Projects .................. APPENDIX L. Summary of Plan Changes since the 2012 Plan ................................................. SPECIAL NOTE REGARDING THE FEMA PRE-DISASTER MITIGATION (PDM) GRANT PROGRAM The Pre-Disaster Mitigation (PDM) Grant Program has been a primary source of mitigation grant funding in west-central Wisconsin for projects such as community safe rooms, burying elevated power lines in areas prone to outages, and creating/updating local mitigation plans. The PDM Program was recently replaced by the Building Resilient Infrastructure and Communities (BRIC) Grant Program as a result of the Disaster Relief and Recovery Act of 2018. Like the PDM Program, proactively mitigating the impacts of natural hazards continues to be the purpose of the BRIC Program and many aspects of the new program are unchanged, including cost-share requirements. Potential grant projects must also continue to align with a current local mitigation plan for local grant eligibility. The new BRIC Program places greater emphasis on funding resilient infrastructure, mitigating lifelines (critical facilities and services), and incorporating nature-based solutions. Capability- and capacity-building activities, such as modernizing building codes, private- public partnerships, and staff training, are also now explicitly eligible as a mitigation grant project. ii Chippewa County Natural Hazard Mitigation Plan SECTION I SECTION I. INTRODUCTION A. PURPOSE OF THE PLAN The Chippewa County Natural Hazard Mitigation Plan has been prepared as a result of the County’s application for, and award of, Pre-Disaster Mitigation