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FEMA’s Disaster Applications of 3D Terrain Data
Doug Bausch, FEMA Region VIII
Denver, CO
July 25th, 2014
Doug Bausch, FEMA Region VIII
Denver, CO
July 25th, 2014
Rapid Inundation Assessment• Obtain 3D
terrain
• Develop flood surface from model and/or field observations
• Subtract terrain from flood surface
Minot, ND 2011-Rapid Situational Awareness
Sandy, 2012: Field Observed Flood Surface
6
Sandy 2012: Expedited Assistance
-44K households identified as damaged and inaccessible-Over $130M in expedited assistance based on accurate and rapid flood depth information
NYC: 3DEP vs Low Resolution
Areas “flooded” at low resolution
8
Sandy, 2012: Analysis of NFIP Impacts
Flood depths assigned to 200,000+ policies
Integrated into request to increase borrowing authority –
$9.7 billion
Colorado 2013 FloodsImpacts:• 10 lives lost• Over 8,000 evacuated• Over $3B in losses• 138 communities with
damage
Colorado Flood 2013 – 3DEP Post Event Lidar
• Significant stream morphology changes
• Rare use of disaster funds ($2M) to purchase
• Partnership and expedited delivery
• Rapidly produced new floodplain mapping
Denver
Boulder
COLORADO FLOODING DR- 4145 - CO
1/3rd of all households in Jamestown and Lyons were damaged700 households in Lyons without water or sewer
COLORADO FLOODING DR- 4145 - CO COLORADO FLOODING DR- 4145 - CO
Infrastructure Progress
COLORADO FLOODING DR- 4145 - CO COLORADO FLOODING DR- 4145 - CO
Infrastructure Progress-$60M to address imminent flood threat due to debris deposition and erosion
COLORADO FLOODING DR- 4145 - CO
Jamestown, CO: Pre- and Post-Floodplains
-Design guidance for permanent restoration-$2.1B infrastructure restoration
-includes $528M in mitigation and resiliency investments
Colorado 2013 Infrastructure Restoration
• Expedites response and recovery• Supports partnerships in
obtaining and expedited delivery
• Provides high quality accurate floodplain maps
• Supports sound decision-making and investments
• Helps support resilient communities
3DEP Disaster Applications Summary