2015 Natural Hazards Mitigation Plan County of Kane Natural Hazards Mitigation Plan Contents Executive Summary ...............................................................................ES-1 1. Introduction 1.1. Original Planning Approach ........................................................... 1-3 1.2. 2015 Plan Review and Update Process ........................................... 1-7 1.3. Land Use and Development .......................................................... 1-10 1.4. Critical Facilities ........................................................................... 1-12 1.5. References ..................................................................................... 1-14 2. Hazard Analysis 2.1. Overbank Flooding ......................................................................... 2-1 2.2. Historical Flooding ....................................................................... 2-10 2.3. Impact of Flooding ........................................................................ 2-13 2.4. National Flood Insurance Program ............................................... 2-17 2.5. Economic Impact .......................................................................... 2-23 2.6. Tornadoes ...................................................................................... 2-26 2.7. Earthquakes ................................................................................... 2-33 2.8. Thunderstorms .............................................................................. 2-37 2.9. Winter Storms ............................................................................... 2-40 2.10. Conclusions ................................................................................... 2-44 2.11. References ..................................................................................... 2-46 3. Goals 3.1. Setting the stage .............................................................................. 3-1 3.2. Setting directions ............................................................................ 3-5 3.3. Goals and Guidelines ...................................................................... 3-7 4. Preventive Measures 4.1. Building Codes ............................................................................... 4-1 4.2. Manufactured Homes ...................................................................... 4-5 4.3. Planning and Zoning ....................................................................... 4-6 4.4. Subdivision Regulations ............................................................... 4-10 4.5. Open Space Preservation .............................................................. 4-11 4.6. Stormwater Management .............................................................. 4-13 4.7. Conclusions ................................................................................... 4-16 4.8. Recommendations ......................................................................... 4-16 Natural Hazards Mitigation Plan – i – May 2015 4.9. References ..................................................................................... 4-18 5. Property Protection 5.1. Keeping the Hazard Away .............................................................. 5-1 5.2. Retrofitting ...................................................................................... 5-4 5.3. Insurance ......................................................................................... 5-7 5.4. The Government’s Role .................................................................. 5-8 5.5. Repetitive Loss Properties and Analysis ...................................... 5-11 5.6. Conclusions ................................................................................... 5-15 5.7. Recommendations ......................................................................... 5-15 5.8. References ..................................................................................... 5-16 6. Resource Protection 6.1. Wetland Protection ......................................................................... 6-1 6.2. Erosion and Sedimentation Control ................................................ 6-4 6.3. River Restoration ............................................................................ 6-5 6.4. Best Management Practices ............................................................ 6-7 6.5. Dumping Regulations ..................................................................... 6-9 6.6. Urban Forestry .............................................................................. 6-10 6.7. Farmland Protection ...................................................................... 6-11 6.8. Conclusions ................................................................................... 6-13 6.9. Recommendations ......................................................................... 6-14 6.10. References ..................................................................................... 6-14 7. Emergency Services 7.1. Threat Recognition ......................................................................... 7-1 7.2. Warning .......................................................................................... 7-4 7.3. Response ......................................................................................... 7-7 7.4. Critical Facilities Protection ......................................................... 7-11 7.5. Post-Disaster Recovery and Mitigation ........................................ 7-11 7.6. Conclusions ................................................................................... 7-13 7.7. Recommendations ......................................................................... 7-14 7.8. References ..................................................................................... 7-15 8. Structural Projects 8.1. Reservoirs and Detention ................................................................ 8-2 8.2. Levees and Floodwalls.................................................................... 8-5 8.3. Channel Improvements ................................................................... 8-7 8.4. Crossings and Roadways ................................................................ 8-9 8.5. Drainage and Storm Sewer Improvements ..................................... 8-9 8.6. Drainage System Maintenance ..................................................... 8-10 8.7. Conclusions ................................................................................... 8-11 Natural Hazards Mitigation Plan – ii – May 2015 8.8. Recommendations ......................................................................... 8-12 8.9. References ..................................................................................... 8-12 9. Public Information 9.1. Outreach Projects ............................................................................ 9-1 9.2. Real Estate Disclosure .................................................................... 9-4 9.3. Library and Web Sites .................................................................... 9-5 9.4. Technical Assistance....................................................................... 9-6 9.5. Public Information Program Strategy ............................................. 9-7 9.6. Conclusions ..................................................................................... 9-9 9.7. Recommendations ........................................................................... 9-9 9.8. References ..................................................................................... 9-10 10. Action Plan 10.1. Program Action Items ................................................................... 10-5 10.2. Public Information Strategy ........................................................ 10-42 10.3. Administrative Action Items ....................................................... 10-43 10.4. Action Items Completed Since the 2009 Update ........................ 10-46 10.5. Action Items Removed at the Jurisdictions request .................... 10-52 11. Plan Update 11.1. 2015 Plan Update .......................................................................... 11-1 11.2. Guidelines for the Next plan Update - 2020 ................................. 11-6 Appendices Appendix A. County and Municipal Resolutions Appendix B. Annual Reports Appendix C. The Community Rating System Natural Hazards Mitigation Plan – iii – May 2015 Natural Hazards Mitigation Plan Executive Summary 1. Introduction Kane County Illinois is subject to natural hazards that threaten life and health and have caused extensive property damage. Floods struck the County in 1993, 1996, 2007, 2008, 20113 blizzards in 1999, 2000, and 2011, and tornadoes in 1990, 1991, 1993, 2003, 2004, 2009, and 2010. To better understand these hazards and their impacts on people and property, and to identify ways to reduce those impacts, the County’s Department of Environmental Management and Office of Emergency Management jointly undertook this Natural Hazards Mitigation Plan. July 18, 1996, Blackberry Creek Flood Kings Road and Amarillo in Source: Chris Dagiantis, Carpentersville, August 23, 2007 Kane County Development Department Source: Carpentersville Fire Department Mitigation activities need funding. A mitigation plan is now a requirement for Federal mitigation funds. Section 104 of the Disaster Mitigation Act of 2000 (42 USC 5165) states that after November 1, 2003, local governments applying for pre-disaster mitigation funds must have an approved