how katrina impacted the corps, and implications for those living near water1 slide1 examples in...
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How Katrina Impacted the Corps, and Implications for Those Living Near Water3 Risk Quantification Risk = Hazard Probability X System Performance X Consequences Flood Hazards Seismic Hazards Asymmetric Hazards Infrastructure Reliability Infrastructure Resilience Operation & Maintenance Contingency Planning and Response Mitigation Life Loss Property Damage Social and Economic Damage Environment Evacuation Disaster Recovery Probability of Failure Risk Quantification is key to managing risks: –Understanding the source and nature of the Risk –Communicating the Risk –Acting to Reduce the Risk Flood Risk ManagementTRANSCRIPT
How Katrina Impacted the Corps, and Implications for Those Living Near Water 1Slide 1
Examples in Quantifying Flood Risk
Presentation toNational Flood Risk Management
Policy Summit
Edward HeckerDirector, Contingency OperationsU.S. Army Corps of Engineers
14 July 2009
How Katrina Impacted the Corps, and Implications for Those Living Near Water 2
piezometer_pointpiezometer_pointborehole_point borehole_point
levee_inspection_pointlevee_inspection_point
sand_boil_pointsand_boil_point
levee_flood_fight_sitelevee_flood_fight_site
levee_break_sitelevee_break_site
levee_inspection_linelevee_inspection_linecross_section_linecross_section_line
encroachment_siteencroachment_site
Flood Risk Management
Inventory and Assessments
• National Levee Inventory: • Living database and national resource. • Include all federal and nonfederal levees • Risk Assessments:• Identify failure modes and prioritize remedial
actions.
How Katrina Impacted the Corps, and Implications for Those Living Near Water 3
Risk QuantificationRisk = Hazard Probability X System Performance X Consequences
Flood HazardsSeismic HazardsAsymmetric Hazards
Infrastructure ReliabilityInfrastructure ResilienceOperation & MaintenanceContingency Planning and ResponseMitigation
Life LossProperty DamageSocial and Economic DamageEnvironmentEvacuationDisaster Recovery
Probability of Failure
• Risk Quantification is key to managing risks:– Understanding the source and nature of the Risk– Communicating the Risk– Acting to Reduce the Risk
Flood Risk Management
How Katrina Impacted the Corps, and Implications for Those Living Near Water 4
Tolerable Risk Guidelineswithin a Risk Framework
• Informing Assessments:– How Safe is Safe?– Priority & Urgency– What is Tolerable?
• Informing Management:– Effectiveness of Interim
Measures?– What Options are Available?– What is Practicable?– How Well Justified is Action?
• Informing Communication:– How reliable is it?– What are Societal Risks?– What Risks Remain?
TRG
Tolerable Risk Guidelines
Risk Framework
Flood Risk Management
How Katrina Impacted the Corps, and Implications for Those Living Near Water 5
Shared Flood Risk Management
Residual Risk
How Katrina Impacted the Corps, and Implications for Those Living Near Water 6
Policy Studies• Wise Use of Floodplains – An ongoing, IWR policy
study to understand the effects of USACE programs and policies in different policy and watershed contexts on floodplain management choices affecting flood risk, and to describe options for policy, legislative or program reforms.
• WRDA 2007, Section 2032 - The President is to submit a report to Congress describing the vulnerability of the U.S. to damage from flooding, comparative risks faced by different regions of the country, programs in the U.S. which may be encouraging development and economic activity in flood prone areas, and recommendations for improving those programs and proposals for implementing the recommendations.
How Katrina Impacted the Corps, and Implications for Those Living Near Water 7
Preparation/Training
Mitigation Recovery
Response
Flood Risk Management Cycle
State & local partnerships• Hazard mitigation plans• Floodplain mgnt plans• Pre & post response and recovery
Event