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Contents ix Table 11-1. Jurisdictions and Date Joined NFIP .................................................................................................. 11-5 Table 11-2. Flood Insurance Statistics ................................................................................................................. 11-6 Table 11-3. CRS Community Status in the Planning Area .................................................................................. 11-6 Table 11-4. FEMA Disaster Declarations for Flood Events in Alameda County ................................................ 11-8 Table 11-5. Flood Events in the Tri-Valley Planning Area .................................................................................. 11-8 Table 11-6. Probability of Future Occurrences of Flood Events ........................................................................ 11-12 Table 11-7. Summary of Peak Discharges within the Planning Area ................................................................ 11-13 Table 12-1. FEMA Landslide Disaster Declarations in Alameda County ........................................................... 12-3 Table 12-2. Landslide Events in the Tri-Valley Planning Area ........................................................................... 12-4 Table 13-1. Beaufort Wind Chart ......................................................................................................................... 13-4 Table 13-2. Severe Weather Events in the Tri-Valley Planning Area .................................................................. 13-6 Table 14-1. Recent Fires Affecting Planning Area (Burning More Than 10 Acres) ............................................ 14-3 Table 14-2. Record of Fire in Alameda County ................................................................................................... 14-5 Table 15-1. Summary of Likely Primary and Secondary Climate Change Impacts on the Planning Area .......... 15-5 Table 15-2. Average Temperature Projections in Tri-Valley Planning Area ....................................................... 15-6 Table 16-1. Naturally Spread Diseases Seen in California ................................................................................... 16-2 Table 17-1. Common Mechanisms for Cyber-attacks .......................................................................................... 17-6 Table 17-2. Hazard Materials Spills in Tri-Valley Planning Area Reported to Cal OES (2012-2016) ............. 17-15 Table 17-3. Total Fatal and Injury Collision Data for Tri-Valley Planning Area .............................................. 17-16 Table 17-4. Injuries and Fatalities from Hazardous Materials Spills in Tri-Valley Planning Area ................... 17-20 Table 17-5. Criticality Factors ............................................................................................................................ 17-22 Table 17-6. Vulnerability Criteria ...................................................................................................................... 17-22 Table 20-1. Alternatives to Mitigate the Dam Failure Hazard ............................................................................. 20-2 Table 20-2. Alternatives to Mitigate the Drought Hazard .................................................................................... 20-3 Table 20-3. Alternatives to Mitigate the Earthquake Hazard ............................................................................... 20-4 Table 20-4. Alternatives to Mitigate the Flood Hazard ........................................................................................ 20-5 Table 20-5. Alternatives to Mitigate the Landslide Hazard ................................................................................. 20-6 Table 20-6. Alternatives to Mitigate the Severe Weather Hazard ........................................................................ 20-7 Table 20-7. Alternatives to Mitigate the Wildfire Hazard .................................................................................... 20-8 Table 21-1. Plan Maintenance Matrix .................................................................................................................. 21-2 Figures Figure 3-1. Hazard Mitigation Plan Web Site Homepage ...................................................................................... 3-9 Figure 3-2. Hazard Mitigation Survey .................................................................................................................. 3-10 Figure 3-3. Tri-Valley StoryMap ......................................................................................................................... 3-11 Figure 3-4. Social Media Public Outreach ........................................................................................................... 3-12 Figure 4-1. Planning Area ...................................................................................................................................... 4-2 Figure 4-2. Watersheds and Water Bodies in the Planning Area ........................................................................... 4-4 Figure 4-3. Normal Precipitation and Temperatures in Planning Area, 2000-2023 ............................................... 4-5 Page 74 of 228