Post on 06-Feb-2016
description
FEMA’s Disaster Applications of 3D Terrain Data
Doug Bausch, FEMA Region VIIIDenver, 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