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Published byJonah Wilcox Modified over 9 years ago
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May 17, 2011 True Flood Loss Analysis: Integrating Both Depth Grid and Specific Building Inventories Jason Rutter, CFM CoreLogic
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2 Overview 1.Concept – Data Enhancements 2.Level I Results – Tulsa, OK 3.Impact of Enhanced Depth Grids 4.Impact of Enhanced Property Information 5.Level II+ Results – Tulsa, OK 6.Additional Benefits of Analysis
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3 Concept HAZUS Level I Depth Grid HAZUS Level II+ Property Data
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4 Data Enhancements Depth Grid – PTS Property Data – local and county records
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5 HAZUS Level I Results – Tulsa, OK Settings: 100 Year Return Period 10 Mile drainage Area 10 Meter DEM Economic Loss From Building Damage $390,052,000
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6 Data Enhancement – RAMPP Depth Grid Depth Grid Comparison – County Area Coverage HAZUS Level I:17.8%(Red) RAMPP Depth Grid:18.8%(Blue) Results HAZUS Level I:$390,052,000 RAMPP Depth Grid:$452,198,000
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7 Detailed Property Locations Selection Criteria: HAZUS Level I Flood Zone Area HAZUS Level II+ Flood Zone Area Buffers Properties Selected Total Properties: 33,973 Structures: 24,522 Vacant: 9,451
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8 Importing Properties Into HAZUS Imported Properties: 24,522 Extracted from National Database – 200 standardized fields Aggregated land use codes Calculations and Assumptions (foundation type, first floor height) Create a HAZUS ready access file Improvement ValueCost Living Area Sq FtSqFt Year BuiltYrBuilt Number of StoriesNumStories Mobile Home Indicator“RES2”
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9 Impact of Enhanced Data HAZUS Level IRAMPP Depth Grid Structures: 12,099 ( above HAZUS limits )Structures: 4,964
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10 HAZUS Level II+ Results – Tulsa, OK Structures Impacted: 4,964 Estimated Building Damage: $82,501,947 Average Building Damage: $16,520 LEVEL I and LEVEL II Comparison Damage EstimateNumber of Buildings LEVEL I$390,052,000NA LEVEL II+ $82,501,9474,964
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11 HAZUS Level I vs. Level II+ HAZUS Level I Damage = $1,973,000 HAZUS Level II+ Damage = $119,599 Structures = 4 Vacant Properties = 9
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12 HAZUS Level I vs. Level II+ HAZUS Level I Damage = $4,486,000 HAZUS Level II+ Damage = $1,338,372 Structures = 18 Vacant Properties = 12
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13 HAZUS Level II+ Results – Market Values Calculated using Automated Valuation Models (AVM) Properties with Market Values Calculated – 75% Market Values v. Assessed Value 112% Increase HAZUS Level II+ Market Value Losses Estimated Losses = $ 92,377,065
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14 Benefits 1.More Accurate Aggregate Values Average Annualized Loss (AAL) Adjustments Post Disaster Funding Estimates 2.Identification of Properties At-Risk Mitigation Programs Outreach NFIP Insurance Take Rate Analysis
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15 Summary 1.HAZUS has the ability to process thousands of individual properties when provided enhanced data. Requires a transition to new uses of HAZUS. 2.Enhancing HAZUS with additional data requires comprehensive, standardized attribution. 3.Accurate, representative loss analysis requires property locations to accurately represent local geographic build patterns.
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16 Questions Jason Rutter, CFM CoreLogic
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