New Durham Hazard Mitigation Planning Committee Has Developed the Summary Matrix of Existing Hazard Mitigation Strategies Presented on the Following Pages
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Multi-Hazard Mitigation Plan Update 2016 Town of New Durham, New Hampshire Multi-Hazard Mitigation Plan Update 2016 Town of New Durham, NH Adopted 2004 Updated 2011 Updated 2016 Submitted to the New Hampshire Homeland Security & Emergency Management By the Town of New Durham, NH with Strafford Regional Planning Commission 1 Multi-Hazard Mitigation Plan Update 2016 Town of New Durham, New Hampshire This project was funded from the fiscal year 2014 Pre-Disaster Mitigation Competitive (PDMC) Grant Program, which was awarded to the Department of Safety, Division of Homeland Security and Emergency Management (HSEM) from the Federal Emergency Management Agency (FEMA). Acknowledgements This plan was created through a grant from New Hampshire Homeland Security Emergency Management (HSEM). The following organizations have contributed invaluable assistance and support for this project: The 2004 and 2010 New Durham Hazard Mitigation Committees New Hampshire Homeland Security Emergency Management (HSEM) Town of New Durham The 2016 Town of New Durham Multi-Hazard Mitigation Planning Team 15 people have attended meetings and been instrumental in completing this plan: Gregory Anthes Board of Selectmen, New Durham Marcia Berry Head Custodian, New Durham School, New Durham David Bickford Board of Selectmen, New Durham Neal Burns Lieutenant, Fire Department, New Durham Michael Clark Road Agent, Highway Department, New Durham Robert Fitzsimmons Interim Chief of Police, New Durham Scott Kinmond Town Administrator, New Durham Reginald Meattey Sargent/Officer in Command, Police Department, New Durham Amy Smith Police Department & Land Use Department Assistant Administrator, New Durham David F. Stuart Deputy Fire Chief/Fire Warden, New Durham Carter Terenzini Town Administrator (Interim), New Durham Don R. Vachon Supervisor, Highway Department, New Durham Michael Varney Captain, Fire Department, New Durham Peter Varney Emergency Management Director/Fire Chief, New Durham Elizabeth Durfee Regional Planner, Strafford Regional Planning Commission Plan Prepared and Authored By Elizabeth Durfee, Regional Planner Strafford Regional Planning Commission 150 Wakefield Street, Suite 12 Rochester, NH 03867 603-994-3500 www.strafford.org Date of Conditional Approval from FEMA: July 18, 2016 Date of Adoption by Town: September 19, 2016 Date of Final Approval from FEMA: September 28, 2016 Cover: Spring Flooding over Merrymeeting Road along the marsh area. 1984. (Credit: New Durham Historical Collections 2010) 2 Multi-Hazard Mitigation Plan Update 2016 Town of New Durham, New Hampshire Table of Contents Table of Contents ............................................................................................................................................. 3 Executive Summary ......................................................................................................................................... 5 Chapter I: Multi-Hazard Planning Process ..................................................................................................... 7 Authority....................................................................................................................................................... 7 Purpose & History of the FEMA Mitigation Planning Process ................................................................... 7 Jurisdiction ................................................................................................................................................... 8 Scope of Plan ................................................................................................................................................. 8 Multi-Hazard Planning Process ................................................................................................................... 8 Public Involvement in the 2016 Update ...................................................................................................... 9 Narrative Description of the Process and Methodology ............................................................................ 10 Chapter II: Hazard Identification and Analysis ........................................................................................... 20 Hazard Analysis ......................................................................................................................................... 20 Rating Probability, Severity, and Overall Risk of Future Disasters......................................................... 23 Hazard Ratings in New Durham, NH ........................................................................................................ 24 Description of Hazards ............................................................................................................................... 26 National Flood Insurance Program (NFIP) ............................................................................................... 46 New Durham Flood Insurance Program (NFIP) Status ............................................................................ 46 Chapter III: History and Demographics ........................................................................................................ 49 Introduction ................................................................................................................................................ 49 History ........................................................................................................................................................ 50 Historical Population Growth .................................................................................................................... 50 Projected Population Change ..................................................................................................................... 51 Migration .................................................................................................................................................... 51 Aging ........................................................................................................................................................... 51 Population and Age .................................................................................................................................... 52 Housing ....................................................................................................................................................... 52 Chapter IV: Critical Infrastructure & Key Resources (CI/KR) ..................................................................... 55 Chapter V. Multi-Hazard Effects in New Durham ....................................................................................... 60 Identifying Vulnerable Structures ............................................................................................................. 60 Calculating Potential Loss ......................................................................................................................... 61 3 Multi-Hazard Mitigation Plan Update 2016 Town of New Durham, New Hampshire Chapter VI: Multi-Hazard Goals and Existing Mitigation Strategies ......................................................... 66 Multi-Hazard Mitigation Goals .................................................................................................................. 66 Mitigation Strategies Currently Underway in New Durham ................................................................... 66 Gaps in Existing Measures ........................................................................................................................ 66 Summary of Recommended Improvements ............................................................................................... 67 Existing Protection Matrix ......................................................................................................................... 68 Chapter VII: Prior Mitigation Plan(s) ........................................................................................................... 72 Chapter VIII: New Mitigation Strategies & STAPLEE ................................................................................ 75 Feasibility and Prioritization ..................................................................................................................... 75 The Planning Committee’s Understanding of Multi-Hazard Mitigation Strategies ................................ 76 Additional Potential Mitigation Strategies................................................................................................ 81 Chapter IX: Implementation Schedule for Prioritized Strategies ................................................................ 84 Chapter X. Monitoring, Evaluation, and Updating the Plan ........................................................................ 87 Introduction ................................................................................................................................................ 87 Multi-Hazard Plan Monitoring, Evaluation, and Updates ........................................................................ 87 Integration with Other Plans ..................................................................................................................... 87 Chapter XI: Signed Community Documents & Approval Letters ................................................................. 89 Conditional Approval Letter from FEMA .................................................................................................