Fema s disaster applications of 3d terrain data
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FEMA’s Disaster Applications of 3D Terrain Data. Doug Bausch, FEMA Region VIII Denver, CO July 25 th , 2014. Rapid Inundation Assessment. Obtain 3D terrain. Develop flood surface from model and/or field observations. Subtract terrain from flood surface.

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FEMA’s Disaster Applications of 3D Terrain Data

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Fema s disaster applications of 3d terrain data

FEMA’s Disaster Applications of 3D Terrain Data

Doug Bausch, FEMA Region VIII

Denver, CO

July 25th, 2014


Rapid inundation assessment

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

Minot, ND 2011-Rapid Situational Awareness


Sandy 2012 field observed flood surface

Sandy, 2012: Field Observed Flood Surface


Sandy 2012 expedited assistance

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

NYC: 3DEP vs Low Resolution

Areas “flooded” at low resolution


Sandy 2012 analysis of nfip impacts

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 floods

Colorado 2013 Floods

Impacts:

  • 10 lives lost

  • Over 8,000 evacuated

  • Over $3B in losses

  • 138 communities with damage


Colorado flood 2013 3dep post event lidar

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

Boulder

Denver


Fema s disaster applications of 3d terrain data

1/3rd of all households in Jamestown and Lyons were damaged

700 households in Lyons without water or sewer


Fema s disaster applications of 3d terrain data

Infrastructure Progress

COLORADO FLOODING DR- 4145 - CO


Fema s disaster applications of 3d terrain data

-$60M to address imminent flood threat due to debris deposition and erosion

Infrastructure Progress

COLORADO FLOODING DR- 4145 - CO


Jamestown co pre and post floodplains

Jamestown, CO: Pre- and Post-Floodplains


Fema s disaster applications of 3d terrain data

Colorado 2013 Infrastructure Restoration

-Design guidance for permanent restoration

-$2.1B infrastructure restoration

-includes $528M in mitigation and resiliency investments


Fema s disaster applications of 3d terrain data

3DEP Disaster Applications Summary

  • 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


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