INTENTIONAL BLANK PAGE Table of Contents Section 1. Introduction ............................................................................................................. 1 1.1 San Bernardino County Unincorporated Area ................................................................ 2 San Bernardino County Fire Protection District ..................................................... 3 San Bernardino County Flood Control District ....................................................... 4 Special Districts Department ................................................................................. 6 1.2 Purpose of the Plan ...................................................................................................... 11 1.3 Authority ....................................................................................................................... 12 1.4 What’s New .................................................................................................................. 12 Updates to the Current Plan ............................................................................... 13 New Jurisdictional Annexes ................................................................................. 13 New Risk Assessment ......................................................................................... 14 Successful Wildfire Mitigation Implementation .................................................... 15 Flood Hazard Mitigation Success ........................................................................ 18 Geologic Hazard Mitigation Success ................................................................... 21 1.5 Community Profile ........................................................................................................ 23 Physical Setting ................................................................................................... 23 History ................................................................................................................. 26 Climate ................................................................................................................ 27 Demographics ..................................................................................................... 28 Existing Land Use ................................................................................................ 30 Development Trends ........................................................................................... 32 Section 2. Plan Adoption ........................................................................................................ 35 2.1 Adoption by Local Governing Body .............................................................................. 35 2.2 Promulgation Authority ................................................................................................. 35 Section 3. Planning Process .................................................................................................. 37 3.1 Preparing the Plan ........................................................................................................ 37 Project Prioritization Involved Comprehensive Consideration of Criteria/Factors 39 Planning Team .................................................................................................... 39 3.2 Coordination with Other External Jurisdictions, Agencies and Organizations .............. 44 Internal Coordination ........................................................................................... 44 External Coordination .......................................................................................... 47 3.3 Public Involvement/Outreach ........................................................................................ 48 Public Meetings ................................................................................................... 48 Ready SB County Preparedness App Message/Web Postings ........................... 50 CERT Teams ....................................................................................................... 50 Public Hearing Process (to be completed upon FEMA Approval)........................ 51 3.4 Planning Process.......................................................................................................... 51 Hazard Screening ................................................................................................ 52 Set Goals ............................................................................................................. 53 Review and Propose Mitigation Measures .......................................................... 54 Draft the Multi-Jurisdictional Hazard Mitigation Plan ........................................... 56 i Adopt the Plan .................................................................................................... 56 Section 4. Risk Assessment .................................................................................................. 59 4.1 Hazard Identification .................................................................................................... 59 Hazard Screening Criteria ................................................................................... 59 Hazard Prioritization ............................................................................................ 63 4.2 Hazard Profiles ............................................................................................................ 63 4.3 Earthquake Geologic Hazards ..................................................................................... 65 Regulatory Environment ..................................................................................... 65 Past Occurrences ............................................................................................... 66 Location/Geographic Extent ................................................................................ 66 Magnitude/Severity ............................................................................................. 68 Frequency and Probability of Occurrence ........................................................... 69 4.4 Wildfire ......................................................................................................................... 73 Regulatory Environment ..................................................................................... 73 Past Occurrences ............................................................................................... 74 Location/Geographic Extent ................................................................................ 77 Magnitude/Severity ............................................................................................. 78 Frequency/Probability of Future Occurrences ..................................................... 78 4.5 Flood ............................................................................................................................ 83 Regulatory Environmental ................................................................................... 84 Past Occurrences ............................................................................................... 85 Location/Geographic Extent ................................................................................ 86 Magnitude/Severity ............................................................................................. 88 Frequency/Probability of Future Occurrences ..................................................... 89 4.6 Drought ........................................................................................................................ 91 Regulatory Environment ..................................................................................... 92 Past Occurrences ............................................................................................... 92 Location/Geographic Extent ................................................................................ 93 Magnitude/Severity ............................................................................................. 93 Frequency/Probability of Future Occurrences ..................................................... 97 4.7 Terrorism ..................................................................................................................... 99 Antiterrorism Regulatory Environment ................................................................ 99 Counterterrorism Regulatory Environment ........................................................ 100 Past Occurrences ............................................................................................. 100 Location/Geographic Extent .............................................................................. 103 Magnitude/Severity ........................................................................................... 104 Frequency/Probability of Future Occurrences ................................................... 107 4.8 Climate Change ......................................................................................................... 109 Regulatory Environment ................................................................................... 109 Past Occurrences ............................................................................................. 111 Location/Geographic Extent .............................................................................. 112 Magnitude/Severity ..........................................................................................