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2021 Multijurisdictional Local Hazard Mitigation Plan Contents Table 6-1. Summary of Relevant Federal Agencies, Programs and Regulations ................................................... 6-1 Table 6-2. Summary of Relevant State Agencies, Programs and Regulations ....................................................... 6-3 Table 7-1. Hazus Model Data Documentation—Critical Facilities. ....................................................................... 7-7 Table 7-2. Hazus Model Data Documentation ....................................................................................................... 7-8 Table 8-1. San Mateo County Dams with Potential to Endanger Lives and Property ............................................ 8-5 Table 8-2. State of California Downstream Hazard Potential Classification ......................................................... 8-7 Table 8-3. Exposed Population and Property in Evaluated Dam Failure Inundation Areas ................................... 8-8 Table 8-4. Distribution of Population Exposed to Dam Failure Hazard by SoVI Rating ..................................... 8-10 Table 8-5. Loss Estimates for Dam Failure .......................................................................................................... 8-11 Table 9-1. State Drought Management Program .................................................................................................... 9-5 Table 9-2. Agriculture Land and % Change in San Mateo County in 2017 ......................................................... 9-13 Table 10-1. Mercalli Scale and Peak Ground Acceleration Comparison ............................................................. 10-3 Table 10-2. NEHRP Soil Classification System ................................................................................................... 10-6 Table 10-3. Recent Earthquakes Magnitude 5.0 or Larger Within 100-Mile radius ............................................ 10-6 Table 10-4. Additional Faults within a 50-Mile Radius ....................................................................................... 10-7 Table 10-5. Earthquakes Modeled for Risk Assessment .................................................................................... 10-14 Table 10-6. Distribution of Population Exposed to Earthquake Hazard by SoVI Rating .................................. 10-20 Table 10-7. Estimated Earthquake Impact on Persons ....................................................................................... 10-20 Table 10-8. Age of Housing Units in Planning Area .......................................................................................... 10-21 Table 10-9. Estimated Impact of Earthquake Scenario Events in the Planning Area ......................................... 10-22 Table 11-1. Flood Insurance Statistics.................................................................................................................. 11-7 Table 11-2. CRS Status of Participating Jurisdictions .......................................................................................... 11-7 Table 11-3. Summary of Flood Problems............................................................................................. 11-8 Table 11-4. History of Flood Events .................................................................................................................. 11-10 Table 11-5. Repetitive Loss Properties in San Mateo County. ........................................................................... 11-15 Table 11-6. Summary of Peak Discharges—San Mateo County ........................................................................ 11-16 Table 11-7. Summary of Still-Water Elevations the Pacific Ocean ................................................................... 11-19 Table 11-8. Exposed Population and Property in Mapped Flood Zones ............................................................ 11-20 Table 11-9. SoVI Index Population Distribution for the 1-Percent and 0.2-Percent-Annual-Chance Flood...... 11-23 Table 11-10. Estimated Flood Impacts on Persons and Households .................................................................. 11-24 Table 11-11. Estimated Impact of a Flood Event in the Planning Area ............................................................. 11-25 Table 12-1. Landslide Events in San Mateo County ............................................................................................ 12-3 Table 12-2. Exposed Population and Property in Mapped Landslide Hazard Zones ........................................... 12-8 Table 12-3. Distribution of Population Exposed to Landslide Hazard by SoVI Rating ..................................... 12-10 Table 12-4. Loss Estimation for Landslide ......................................................................................................... 12-11 Table 13-1. Exposed Population and Property in Sea-Level Rise Zones ............................................................. 13-6 Table 13-2. Distribution of Population Exposed to Sea-Level Rise Hazard by SoVI Rating............................... 13-8 Table 13-3. Mean Depths of Flooding for Sea-Level Rise Scenarios .................................................................. 13-8 Table 13-4. Loss Estimation for Sea-Level Rise .................................................................................................. 13-8 Table 14-1. Operational Enhanced Fujita Scale ................................................................................................... 14-5 Table 14-2. Beaufort Wind Chart ......................................................................................................................... 14-6 Table 14-3. Severe Weather Events in San Mateo County Since 1950 ................................................................ 14-9 Table 14-4. Recurrence Probabilities for Severe Weather Events ...................................................................... 14-12 ix