Emerging Technology for Communication

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• Emerging Technology for Communication
• Multi-Hazard Information

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Flood Map Modernization

• Flood Map Modernization has brought FEMAs maps
  and mapping process into the 21st century.
• The digital technologies advanced through Map
  Modernization have opened doors that allow more
  informed, sophisticated, and effective ways for
  local and state governments to assess,
  communicate, and reduce flood risk.

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FIRM to DFIRM

• FEMA undertook the in-progress, multi-year Map
  Modernization Program to provide a
  technology-based, cost-effective, long-term
  process for updating, maintaining, storing, and
  distributing the flood hazard and risk
  information portrayed on the flood maps.

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Flood Map Modernization

• Create countywide FIRMs Flood Insurance Study
  Texts
• Perform new engineering studies
• Convert vertical datum (NGVD 29 to NAVD 88)
• Upgrade FIRMs to Digital format (DFIRMs)
• Use local basemap imagery, if available
• Make the data publicly available

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DFIRM Development

• Current maps are
• Difficult to maintain reproduce
• Difficult to make accurate flood zone
  determinations

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What is a DFIRM?


Topography
Flood Data
Basemap

Digital FIRM
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DFIRM Production Tools

• Accessed on-line via Citrix login
• Built on ESRIs ArcMap and Production Line Tool
  Set (PLTS)
• 2 PLTS components implemented
• Job Tracking Extension
• GIS Data Reviewer
• Additional ArcObjects based tools were developed

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Customized Applications/Extensions
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DFIRM Development
DFIRM GIS Database Creation (GeoPop Pro)

• Create standards-based GIS data
• Pre-defined file names, formats, domains
  attributes
• Facilitates easy update and maintenance of the
  data and maps
• Multi-user editing and job tracking

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DFIRM Development

• Before Map Mod

• After Map Mod

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FEMA MapMod

• MultiHazard Information Platform (MIP)

http//hazards.fema.gov
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Community Interaction

• SCOPING
• Indentify needs and basemap
• PRELIMINARY
• Digitize flood hazard layer from paper FIRMs
• Update the horizontal and vertical reference
  datum
• Refit the floodplain floodway data to more
  current/complete base-map
• Incorporate Letters of Map Revisions (LOMRs)
• Create 1 seamless countywide FIS report and DFIRM
  
• Outreach to communities and incorporate feedback
• EFFECTIVE
• Post preliminary processing
• Map Adoption
• Outreach Activities
• Make the effective DFIRM data available on-line

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Outreach
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NFHL - Google Maps
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NFHL Virtual Earth
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NFHL Google Earth
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NFHL - DAPPLE
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National Flood Layer (NFL)

• Seamless flood hazard data

WMS
SHP, E00, MIF
KML
3D Fly through?
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Building a National Levee Database

• Interest around levees began gathering in 2004
• Post-Katrina, dramatic increase in interest
• National-level Levee initiatives
• US Army Corp of Engineers has the lead in
  developing the levee inventory for all federal
  levees in the nation
• FEMA has the need to respond to congressional
  inquiries about levees
• Local interests (DWR, communities)

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Building a National Levee Database

• Challenges
• The nation does not have a single comprehensive
  levee database
• Solutions
• Work with FEMA and the Army Corps of Engineers to
  develop a national levee database model.
• Fast track the inventory through collection of a
  simplified dataset

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Universe of Corps of Engineer Levees
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Levee Features Important to FEMA

• levee_centerline
• floodwall_line
• closure_structure
• FC_SEGMENT
• ORGANIZATION
• POINT_OF_CONTACT
• ADDRESS
• MEDIA
• FC_SYSTEM
• protected_area

floodwall_line
closure_structure
levee_centerline
protected_area
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Focusing in on FEMA Needs
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Determining Impact
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Incorporating Levee Information
Levee protecting against 1 annual Chance flood
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Capturing Feedback(Outreach, Phone Calls,
Meetings, etc.)
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(No Transcript)
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Data Sources
DFIRM
MLI
NED
Flood Information Tool
flood surface analysis boundary
levee centerline
ground surface
HAZUS
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Natomas Basin, California
Natomas East Main Drainage Canal
Natomas Basin
Sacramento River
American River
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HAZUS Default Settings
HAZUS MLI data
Sacramento River
Breach location
Est. direct losses 175 Million
Natomas East Main Drainage Canal
American River
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DFIRM Flood Information Tool
DFIRM MLI data
Sacramento River
Breach location
Est. direct losses 3299 Million
Natomas East Main Drainage Canal
American River
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Geospatial Process for Catastrophic Damage
Assessment

• The provides estimated residential damage data
  through geospatial analysis as an alternative to
  physical inspections in areas suffering extensive
  damage as a result of a natural disaster.
• Transition from on-ground inspection to
  geospatial analysis

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Katrina AnalysisInputs Outputs

• Inputs
• Aerial Photography NOAA, USACOE
• Land base Commercial
• Surge (slosh model) NOAA
• Water elevation gauge elevations USACOE or
  local
• Elevation data (DEM) State, USACOE, local
• Zip-code polygons, Zip 4 points Commercial

• Damage assessment polygons NGA and internally
  developed
• Wind models NOAA
• Tax roll local assessor, First American
• Parcels local assessor
• Outputs
• Damage classifications
• Flood depth values
• Zip code level aggregation

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Katrina AnalysisSummary of Products

• Damage classifications
• Storm surge
• Wind damage
• Inland flooding (levee break, riverine)
• Totally destroyed residences
• Roof missing
• Moved off foundation
• Long-term flood ponding greater than 2 ft.

• Summation of analyses
• area damaged within zip code (five digit)
• Damage source
• Level of inundation (flood areas)
• Assignment to zip 4 area if 100 destroyed
• Tax assessor information

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LiDAR Data Set
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New Best Practice

• Katrina (139,000 Applications for Assistance
  processed in 3 weeks) vs. Charlie (160,000
  Applications for Assistance processed in 18
  months)

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• Keep the Nations flood maps credible, enhance
  their quality, and maintain ease of data
  availability