Columbia County, Georgia and the Cities of Grovetown and Harlem Multi -Jurisdictional Hazard Mitigation Plan 2021-2026 Columbia County, Georgia and the Cities of Grovetown and Harlem Multi-Jurisdictional Hazard Mitigation Plan Original Plan Approval: 08/17/2004 st 1 Update Plan Approval: 10/04/2011 nd 2 Update Plan Approval: 08/08/2016 rd 3 Update Plan Approval: ??/??/2021 Prepared For: Prepared By: Columbia County Emergency Management Agency Central Savannah River Area 650-B Ronald Reagan Drive Regional Commission Post Office Box 498 3626 Walton Way Extension Suite 300 Evans, Georgia 30809 Augusta, Georgia 30909 Office - (706) 868-3303 (706) 210-2000 Fax - (706) 868-3343 FAX (706) 210-2006 2021 Multi-Jurisdictional Hazard Mitigation Plan Update TABLE OF CONTENTS Page # Chapter One: Introduction to the Planning Process…………………………………………. 1 I. Purpose and Need of the plan, Authority & Statement of Problem………… 1 II. Local Methodology, Plan Update Process and Participants……………….... 2 III. Original Plan Review and Revision………………………………………….. 7 IV. Organization of the Plan……………………………………………………… 7 V. Local Hazard, Risk and Vulnerability…………………………..…………… 8 VI. Multi-Jurisdictional Considerations………………………………………….. 9 VII. Adoption, Implementation, Monitoring & Evaluation……………………..... 10 VIII. Plan Integration and Maintenance………………………………………….... 11 IX. Community Data……………………………………………………………...11 Chapter Two: Local Natural Hazard, Risk & Vulnerability (HRV) ………………………...19 I. Flooding………………………………………………………………..……..20 II. Tornado………………………………………………………………….….. .29 III. Earthquake…………………………………………………………………… 34 IV. Winter Storms …………………………… ………………………………… 38 V. Hurricanes/Tropical Storms ...……………………………………………… 41 VI. Drought…………………………………….…………………………............ 45 VII. Severe Thunderstorms……………………………………………………..… 49 VIII. Wildfires………………….………….………………………………………. 51 IX. Extreme Heat………………………………………………………………… 56 X. Dam Failures………………………………………………………………… 59 XI. Lightning…………………………………………………………………….. 62 XII. Hail………………………………………………………………………….. .64 Chapter Three: Mitigation Strategy…………………………………………………………..67 I. Introduction to Mitigation....……………….…………………………..……..68 II. Natural Hazards...…………………………………………………….............78 A. Flooding Action Plan………………...…………………….…………78 B. Tornado Action Plan....………………………………………….……78 C. Earthquake Action P………………………………………………….79 D. Winter Weather Action Plan………………………………………….79 E. Tropical Storm/Hurricane Action Plan……...……………………..…80 F. Drought……………………………………………………………….80 G. Severe Thunderstorm Action Plan……………………………………80 H. Wildfire Action Plan………………………………………………… 81 I. Extreme Heat Action Plan……………………………………………81 J. Dam Failure Action Plan……………………………………………..82 K. Lightning Action Plan………………………………………..……….82 L. Hail Action Plan………………………………………………………82 III. Mitigation Actions……………………………………………………………83 IV. Completed and Deleted Action Steps………………………………………...96 Chapter Four: Plan Integration and Maintenance…………………………………………....107 I. Implementation Action Plan …………………………………………………107 II. Evaluation, Monitoring, Updating……………………………………………110 III. Plan Update and Maintenance ……………………………………………...112 Chapter Five: Conclusion…………………………………………………………………......113 I. Summary……………………………………………………………………....113 II. References……………………………………………………………………..114 Appendices …………………………………………………………………………………...115 Columbia County 2021 Multi-Jurisdictional Hazard Mitigation Plan CHAPTER I. INTRODUCTION TO THE PLANNING PROCESS Table 1.1 provides a brief description of each section in this chapter and a summary of the changes made. Table1.1 Chapter I. Sections Section Updates I. Purpose and Need of the Plan, Updated text of this section Authority & Statement of Problem II. Local Methodology, Plan Update Updated list of committee members, revised Process and Participants information and text for the planning process. III. Original Plan Review and Revision All sections of the original plan were analyzed and revised as needed. IV. Organization of the Plan The plan is organized by GEMA local planning Local Hazard Mitigation Plan (HMP) Update Template and includes a timeline. V. Local Hazard, Risk, and Vulnerability Reviewed all information and revised all content Summary, Local Mitigation Goals as needed. and Objectives VI. Multi-Jurisdictional Special Reviewed and updated information regarding Considerations multijurisdictional concerns. VII. Adoption, Implementation, This was evaluated. Additional text was added to Monitoring and Evaluation clearly delineate the task of implementation and monitoring. Plan was adopted and submitted to GEMA and FEMA review. VIII. Community Data Updated demographic and information for each jurisdiction SECTION I. PURPOSE AND NEED OF THE PLAN, AUTHORITY AND STATEMENT OF PROBLEM The Columbia County 2021 Plan Update is the review and improvement on our Multi-Hazard Pre- Disaster Mitigation Plan approved in August 2005 and subsequently updated and approved on November 10, 2011 and August 8, 2016. The update is written to comply with Section 409 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act Title 44 CFR as amended by Section 102 of the Disaster Mitigation Act of 2000. The act gives state and local governments the framework to evaluate and mitigate all hazards as a condition of receiving federal disaster funds. The act provides federal assistance to state and local emergency management and other disaster response organizations in an effort to reduce damage from disasters. The plan has involved multiple community partners including elected officials, city and county personnel, fire, emergency medical services, law enforcement, and the business community. The ultimate goal of this plan is to identify natural hazards and develop strategies to lessen the impact on our community. The Columbia County Emergency Management Agency (EMA) is responsible for presenting this planning document on behalf of Columbia County, including all cities therein. The plan identifies Columbia County 1 2021 Multi-Jurisdictional Hazard Mitigation Plan all natural disasters that could threaten the lives and properties of our community. The scope of the update includes both short- and long-term mitigation strategies, implementation and possible sources of project funding. The plan also contains the following information on: • The vision of mitigation in our community; • The profile of Columbia County, its geography, history, physical features and other community indicators; • The planning process and the involvement of all municipal, state and federal governments, the public, industry and other community players; • Documentation of past and predicted exposure to natural hazards and the potential risks that include the impacts on critical infrastructure with anticipated losses; • An overview of all three jurisdictions’ capabilities to implement hazard mitigation goals and objectives and policies that will effectively mitigate risks to the community; • Procedures for maintaining an effective, long-range HMP and strategy to implement; • An assessment of current policies, goals and regulations that pertain to hazard mitigation; • Documentation of the planning process; • Updated hazard events that occurred since 2016; • Updated critical facilities; • Documented mitigation strategies implemented since 2016; and • Examined and updated mitigation strategy goals, objectives and action steps. The update is the product of the combined efforts of Columbia County and the cities of Grovetown and Harlem. Realizing that identifying the community’s risks and working collectively toward the prevention of disasters is in the county’s best interest, the EMA took the lead role in the update. Under the EMA’s leadership, there has been an endorsement and a commitment by Columbia County as well as the cities of Grovetown and Harlem. Continued mitigation planning is imperative to lessen the impacts of disasters in all three jurisdictions. This plan serves as an excellent method to organize and document current and ongoing mitigation strategies. The implementation of the plan and its components is vital to achieve a community that is resistant to the impact of a disaster. It is the goal of this plan, that implementation will result in a reduction of the loss of life and property, allowing the county to prosper with minimal disruption of services to the community. SECTION II. LOCAL METHODOLOGY, PLAN UPDATE PROCESS AND PARTICIPANTS The Columbia County Board of Commissioners (BOC) contracted with the Central Savannah River Area Regional Commission (RC) to assist in the plan update. The RC has assisted eleven counties in the completion and update of their Pre-Disaster Mitigation Plans. The RC was tasked to review the current plan and identify and incorporate new information. The RC in conjunction with the EMA Director, supervised the project, organized the data, set meeting dates, documented in-kind services, and worked with GEMA to complete the update. The EMA Director was tasked with developing the HMP Committee. Table 1.2 identifies the 2021 planning committee members. Columbia County 2 2021 Multi-Jurisdictional Hazard Mitigation Plan Table 1.2 Name Title Organization Scott Johnson County Manager CC Board of Commissioners Glenn Kennedy Deputy County Manager CC Board of Commissioners Matt Schlachter Deputy County Manager CC Board of Commissioners Andy Leanza EMA Director *(former) CC Board of Commissioners Shawn Granato EMA Deputy Director *(current) CC Board of Commissioners Suzie Hughes EMA Specialist CC Board of Commissioners Connie Smith Floodplain Manager CC Board