Town of Kent Hazard Mitigation Plan
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TOWN OF KENT HAZARD MITIGATION PLAN DECEMBER 2014 MMI #3843-04 Prepared for the: TOWN OF KENT, CONNECTICUT Kent Town Hall 41 Kent Green Boulevard Kent, Connecticut (860) 927-3433 www.townofkentct.com Prepared by: MILONE & MACBROOM, INC. 99 Realty Drive Cheshire, Connecticut 06410 (203) 271-1773 www.miloneandmacbroom.com The preparation of this report has been financed in part through funds provided by the Connecticut Department of Emergency Services and Public Protection (DESPP) Division of Emergency Management and Homeland Security (DEMHS) under a grant from the Federal Emergency Management Agency. The contents of this report reflect the views of the Town of Kent and do not necessarily reflect the official views of DEMHS. The report does not constitute a specification or regulation. Copyright 2014 Milone & MacBroom, Inc. ACKNOWLEDGEMENTS & CONTACT INFORMATION This plan was prepared under the direction of the Town of Kent. The following individual should be contacted with questions or comments regarding the plan: Mr. Bruce Adams First Selectman Town of Kent 41 Kent Green Boulevard Kent, CT 06757 (860) 927-4627 This Natural Hazard Mitigation Plan could not have been completed without the time and dedication of the following individuals at the local level: Mr. Rick Osborne, Highway Department Mr. Bruce Adams, First Selectman The consulting firm of Milone & MacBroom, Inc. (MMI) prepared the subject plan. The following individuals at MMI may be contacted prior to plan adoption with questions or comments using the contact information on the title page or the electronic mail addresses below: Mr. David Murphy, P.E., CFM Associate, Water Resources [email protected] Copyright 2014 Milone & MacBroom, Inc. TABLE OF CONTENTS Page EXECUTIVE SUMMARY ....................................................................................................... ES-1 1.0 INTRODUCTION 1.1 Background and Purpose .............................................................................................................. 1-1 1.2 Hazard Mitigation Goals ............................................................................................................... 1-4 1.3 Identification of Hazards and Document Overview ..................................................................... 1-5 1.4 Discussion of STAPLEE Ranking Method ................................................................................... 1-8 1.5 Discussion of Benefit-Cost Ratio ................................................................................................ 1-10 1.6 Documentation of the Planning Process ..................................................................................... 1-10 1.7 Coordination with Neighboring Communities ............................................................................ 1-17 2.0 COMMUNITY PROFILE 2.1 Physical Setting ............................................................................................................................. 2-1 2.2 Existing Land Use ......................................................................................................................... 2-1 2.3 Geology ......................................................................................................................................... 2-4 2.4 Current Climate Conditions and Climate Change ......................................................................... 2-7 2.5 Drainage Basins and Hydrology ................................................................................................... 2-8 2.6 Population and Demographic Setting ......................................................................................... 2-12 2.7 Governmental Structure and Capabilities ................................................................................... 2-12 2.8 Development Trends ................................................................................................................... 2-13 2.9 Critical Facilities, Sheltering Capabilities, and Emergency Response Capabilities ................... 2-13 3.0 FLOODING 3.1 Setting ........................................................................................................................................... 3-1 3.2 Hazard Assessment ....................................................................................................................... 3-1 3.3 Historic Record ............................................................................................................................. 3-4 3.4 Existing Capabilities ..................................................................................................................... 3-6 3.5 Vulnerabilities and Risk Assessment .......................................................................................... 3-11 3.6 Potential Mitigation Strategies and Actions ................................................................................ 3-14 3.7 Summary of Specific Strategies and Actions .............................................................................. 3-19 4.0 HURRICANES AND TROPICAL STORMS 4.1 Setting ........................................................................................................................................... 4-1 4.2 Hazard Assessment ....................................................................................................................... 4-1 4.3 Historic Record ............................................................................................................................. 4-2 4.4 Existing Capabilities ..................................................................................................................... 4-5 4.5 Vulnerabilities and Risk Assessment ............................................................................................ 4-6 4.6 Potential Mitigation Strategies and Actions ................................................................................ 4-12 4.7 Summary of Specific Strategies and Actions .............................................................................. 4-14 TOWN OF KENT HAZARD MITIGATION PLAN KENT, CONNECTICUT DECEMBER 2014 TC-i TABLE OF CONTENTS (Continued) Page 5.0 SUMMER STORMS AND TORNADOES 5.1 Setting ........................................................................................................................................... 5-1 5.2 Hazard Assessment ....................................................................................................................... 5-1 5.3 Historic Record ............................................................................................................................. 5-5 5.4 Existing Capabilities ..................................................................................................................... 5-7 5.5 Vulnerabilities and Risk Assessment ............................................................................................ 5-8 5.6 Potential Mitigation Strategies and Actions .................................................................................. 5-9 5.7 Summary of Specific Strategies and Actions .............................................................................. 5-10 6.0 WINTER STORMS 6.1 Setting ........................................................................................................................................... 6-1 6.2 Hazard Assessment ....................................................................................................................... 6-1 6.3 Historic Record ............................................................................................................................. 6-3 6.4 Existing Capabilities ..................................................................................................................... 6-8 6.5 Vulnerabilities and Risk Assessment ............................................................................................ 6-8 6.6 Potential Strategies and Actions ................................................................................................... 6-9 6.7 Summary of Specific Strategies and Actions .............................................................................. 6-11 7.0 EARTHQUAKES 7.1 Setting ........................................................................................................................................... 7-1 7.2 Hazard Assessment ....................................................................................................................... 7-1 7.3 Historic Record ............................................................................................................................. 7-2 7.4 Existing Capabilities ..................................................................................................................... 7-4 7.5 Vulnerabilities and Risk Assessment ............................................................................................ 7-4 7.6 Potential Mitigation Strategies and Actions .................................................................................. 7-9 7.7 Summary of Specific Strategies and Actions .............................................................................. 7-10 8.0 DAM FAILURE 8.1 Setting ........................................................................................................................................... 8-1 8.2 Hazard Assessment ......................................................................................................................