Lincoln County AHMP December2010 P.I X
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Lincoln County December All Hazard 2010 Mitigation Plan Prepared by Southwest This multi-jurisdictional hazard mitigation plan includes Lincoln County Regional and the cities of Arco, Hendricks, Ivanhoe, Lake Benton, and Tyler, Minnesota. Development This project was supported by Grant Award Number EMC-2007-PC-0004 Commission awarded by the Federal Emergency Management Agency (FEMA). Points of View or opinions in this document are those of the author and do not and Lincoln represent endorsement by FEMA or reflect FEMA’s views. County Emergency Management Lincoln County All Hazard Mitigation Plan December 2010 Executive Summary .................................................................................................................................... 1 CHAPTER 1: INTRODUCTION I. Mitigation Planning ....................................................................................................................... 3 A. Purpose and Authority B. FEMA Guidance and Plan Review C. Profile of Lincoln County CHAPTER 2: PREREQUISITES II. Multi-Jurisdictional Plan Adoption ............................................................................................. 17 A. Jurisdictions Represented in this Plan B. Adoption Procedure C. Supporting Documentation III. Multi-Jurisdictional Planning Participation ................................................................................. 18 A. How Each Jurisdiction Participated in this Plan CHAPTER 3: PLANNING PROCESS IV. Documentation of the Planning Process .................................................................................... 21 A. Description of the Planning Process B. The All Hazard Mitigation Planning Team C. Public Involvement D. Other Opportunities for Involvement E. Existing Plans, Studies, Reports and Technical Information CHAPTER 4: RISK ASSESMENT V. Identifying Hazards ..................................................................................................................... 27 A. Description of All Hazards VI. Profiling Hazards ......................................................................................................................... 30 A. Natural Hazards B. Technological Hazards Listing for each natural and technological hazard: a) Locations Affected by All Hazards b) Extent of Each Hazard c) Previous Occurrences of Each Hazard d) Probability of Future Hazard Events VII. Assessing Vulnerability: Overview ............................................................................................. 60 A. Summary of Vulnerability B. Impacts of Hazards on the Community VIII. Assessing Vulnerability: Addressing Repetitive Loss Properties ................................................ 69 IX. Assessing Vulnerability: Identifying Structures .......................................................................... 69 A. Existing Critical Facilities Lincoln County AHMP December2010 p.i X. Assessing Vulnerability: Estimating Potential Losses.................................................................. 71 A. Structures Vulnerable to Natural Hazards XI. Assessing Vulnerability: Analyzing Development Trends ........................................................... 75 A. Land Use and Development Trends XII. Multi-Jurisdictional Risk Analysis ................................................................................................ 76 A. Risk Assessment for Participating Jurisdictions CHAPTER 5: MITIGATION STRATEGY XIII. Local Hazard Mitigation Goals .................................................................................................... 77 A. Description of Mitigation Goals and Objectives XIV. Identification and Analysis of Mitigation Actions ....................................................................... 80 A. Mitigation Actions and Projects B. Reducing the Effects of Hazards on New Buildings & Infrastructure C. Reducing the Effects of Hazards on Existing Buildings and Infrastructure XV. Identification and Analysis of Mitigation Actions: National Flood Insurance Program (NFIP) Compliance ................................................................................................................................. 87 A. Participation in the NFIP B. Identification, Analysis and Prioritization of Actions Related to Continued Compliance in NFIP XVI. Implementation of Mitigation Actions ....................................................................................... 89 A. Action Prioritization B. Action Implementation and Administration C. Cost-Benefit Review XVII. Multi-Jurisdictional Mitigation Actions ....................................................................................... 91 A. Action Items for Each Participating Jurisdiction CHAPTER 6: PLAN MAINTENANCE XVIII. Monitoring, Evaluating, and Updating the Plan.......................................................................... 93 A. Method and Schedule for Monitoring this Plan B. Method and Schedule for Evaluating this Plan C. Method and Schedule for Updating the Plan XIX. Incorporation into Existing Planning Mechanisms ..................................................................... 94 A. Local Planning Mechanisms Available for Incorporating Mitigation Requirements B. Process for Incorporating Mitigation Strategies and Hazard Information in Other Plans and Ordinances XX. Continued Public Involvement .................................................................................................... 95 APPENDIX A. Resolutions of Adoption ............................................................................................................. 96 (To be appended following FEMA approval and adoption by each participating jurisdiction.) ADDENDUMS Lincoln County AHMP December2010 p.ii List of Figures Map of Local Units of Government .................................................................................. 2 1-1: Eligible Subapplicants ...................................................................................................... 4 1-2: Watersheds Map ............................................................................................................ 13 2-1: Tornado Damage, Tyler MN, 21 August 1918 ................................................................ 20 4-1: The 100-Year Floodplain ................................................................................................ 41 4-2: Floodplain Map .............................................................................................................. 42 4-3: TORRO Hail Scale ........................................................................................................... 47 4-4: Enhanced F-Scale for Tornado Damage ......................................................................... 50 4-5: Hazard Identification Worksheet ................................................................................... 62 4-6: City Hazard Ranking ....................................................................................................... 76 List of Tables 1-1: Civil Divisions in Lincoln County ....................................................................................... 8 1-2: Population in Southwest Minnesota ............................................................................... 9 1-3: Estimated Population and Households in Lincoln County ............................................... 9 1-4: Projected Population by Age and Gender ..................................................................... 10 1-5: Lincoln County Employment By Industry ....................................................................... 10 1-6: Lincoln County Major Employers ................................................................................... 11 1-7: Utility Systems ............................................................................................................... 15 1-8: Public Services................................................................................................................ 16 2-1: Multi-Jurisdictional Participation in Lincoln County AHMP Process .............................. 19 3-1: Lincoln County All Hazard Planning Team ..................................................................... 23 4-1: NCDC Snow & Ice Events in Lincoln County ................................................................... 35 4-2: NCDC Flood Events in Lincoln County ............................................................................ 45 Lincoln County AHMP December2010 p.iii 4-3: NCDC Hail Events in Lincoln County ............................................................................... 48 4-4: NCDC Tornado Events in Lincoln County ....................................................................... 51 4-5: Parcels Located in Flood Hazard Area, Lincoln County .................................................. 66 4-6: Assessing Critical Facilities in Lincoln County ................................................................ 70 4-7: National Register of Historic Places ............................................................................... 70 4-8: Potential Structure Vulnerability to F4/F5 Tornado Events........................................... 72 4-9: HAZUS Countywide Building-Related Economic Loss Estimates ................................... 74 5-1: Local Partners with Interest in All Hazards Mitigation .................................................. 81 5-2: Participation in National Flood Insurance Program ......................................................