Ulti-Jurisdictionhazard Mitigation Plan for Mahaska County, Iowa 2015
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Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa April 2021 Update 2021 | Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa Page | i [THIS PAGE LEFT INTENTIONALLY BLANK] 2021 | Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa Page | ii Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa Adopted: XX/XX/2021 Expires: XX/XX/2026 Prepared by: Area 15 Regional Planning Commission Special thanks to the Wapello County Emergency Management Commission, Wapello County Emergency Management Agency, and the Wapello County Hazard Mitigation Planning Team This plan was developed in coordination with the Federal Emergency Management Agency and Iowa Homeland Security and Emergency Management www.wapelloready.org www.area15rpc.com 2021 | Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa Page | iii 2021 | Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa Page | iv Local Contact Information1 Emergency Management Agency Cardinal Community Schools Tim Richmond - EMC (641) 652-7531 (641) 814-8333 [email protected] Eddyville-Blakesburg-Fremont Community Schools Wapello County Board of Supervisors (641) 969-4281 (641) 683-4630 [email protected] Ottumwa Community Schools (641) 684-6597 Sheriff – Don Phillips (641) 684-4350 Agency [email protected] (641) 637-5215 [email protected] Hospital (Ottumwa Regional Health Center) 1001 Pennsylvania Ave Blakesburg Ottumwa, IA 52501 (641) 938-2413 (641) 684-2300 [email protected] Fire Departments (Non-Emergency) Chillicothe Agency (641) 937-5002 (641) 226-7780 [email protected] Blakesburg (641) 938-2287 Eddyville Eldon (641) 652-3411 (641) 969-4267 [email protected] Eddyville (641) 969-4870 Eldon Ottumwa (641) 683-0665 (641) 652-7510 [email protected] Wapello Rural (641) 682-5673 Kirkville (641) 680-6924 Ottumwa (641) 683-0600 [email protected] 1 Current as of the date of adoption. Information is subject to change without notice. 2021 | Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa Page | v 2021 | Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa Page | vi Contents Section 1 – Introduction to Mitigation Planning ........................................................................ 1 Background ............................................................................................................................... 1 Purpose....................................................................................................................................... 3 Plan Organization ..................................................................................................................... 3 Section 2 – Mitigation Planning Process ..................................................................................... 5 Planning Meetings & Local Involvement ............................................................................... 5 Plan Review ............................................................................................................................... 7 Section 3 – Planning Area Profile ................................................................................................ 9 Historic Overview ..................................................................................................................... 9 Population, Demographics, & Economics ............................................................................ 12 Geography ............................................................................................................................... 13 Land Use ............................................................................................................................... 13 Surface Water & Floodplains................................................................................................ 13 Infrastructure .......................................................................................................................... 16 Streets & Highways .............................................................................................................. 16 Air, Rail, & Public Transportation ........................................................................................ 16 Utility Systems ...................................................................................................................... 18 Local Media .......................................................................................................................... 18 Schools ...................................................................................................................................... 18 Recreational, Historical, & Cultural Areas .......................................................................... 20 Emergency Response Services ............................................................................................... 21 Law Enforcement .................................................................................................................. 21 Ambulance & Hospital ......................................................................................................... 21 Fire Departments ................................................................................................................... 21 Structures, Community Assets, & Critical Facilities ........................................................... 22 Section 4 – Hazard Analysis & Risk Assessment ..................................................................... 25 Wapello County Hazard Analysis ......................................................................................... 25 2015 Wapello County Plan ................................................................................................... 25 2018 State of Iowa Plan ........................................................................................................ 26 2021 Wapello County Plan Update....................................................................................... 27 2021 | Multi-Jurisdictional Hazard Mitigation Plan for Wapello County, Iowa Page | vii Hazard Profiles........................................................................................................................ 28 Dam/Levee Failure................................................................................................................ 29 Drought ................................................................................................................................. 34 Earthquake ............................................................................................................................ 37 Expansive Soils ..................................................................................................................... 40 Extreme Heat ........................................................................................................................ 42 Flash Flood............................................................................................................................ 45 Landslides ............................................................................................................................. 48 River Flood ........................................................................................................................... 50 Severe Winter Storms ........................................................................................................... 54 Sinkholes ............................................................................................................................... 57 Thunderstorms, Lightning, & Hail........................................................................................ 59 Tornadoes & Windstorms ..................................................................................................... 63 Risk Assessment ...................................................................................................................... 69 History of Hazard Occurrence .............................................................................................. 69 Methodology ......................................................................................................................... 70 Risk Assessment ................................................................................................................... 70 Section 5 – Mitigation Strategy .................................................................................................. 73 Mitigation Goals ...................................................................................................................... 73 Mitigation Actions ................................................................................................................... 73 Categories of Mitigation Actions .......................................................................................... 74 Review of 2015 Mitigation Actions ...................................................................................... 74 Updated Mitigation Actions .................................................................................................. 79 Section 6 –Implementation ......................................................................................................... 85 Plan Adoption & Implementation ........................................................................................