Flood Inundation Mapping...Inundation Mapping becomes a tool for flood…. Preparedness...
Transcript of Flood Inundation Mapping...Inundation Mapping becomes a tool for flood…. Preparedness...
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U.S. Department of the InteriorU.S. Geological Survey
Flood Inundation Mapping
Bill Guertal, DirectorUSGS Indiana & Kentucky Water Science Centers
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Courtesy of Louisiana Digital Map Library: http://www.usgwarchives.org/maps/louisiana/
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From the 19th to the 21st centuryOld concept, new technology:Leveraging Evolving Technologies LiDAR- DEMs GIS World Wide Web 2D hydraulic models Real-time and forecast
hydrologic data FEMA’s HAZUS-MH
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NWS Assessment Team
Team comprised of NWS, USACE, USGS members Report contains a
number of findings & recommendations to improve customer service
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Key Findings & Recommendations
Finding 28: Flood inundation mapping will help the public, media, emergency managers, and others visualize the spatial extent and depth of flood waters in the vicinity of NWS river forecast locations.
Recommendation 28: The NWS should expand efforts with state and federal agencies and others to accelerate the implementation of flood inundation mapping across the United States.
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Inundation Mapping becomes a tool for flood….
Preparedness “What-if” scenarios
Response Tied to gage & forecast
data Recovery Damage assessment –
e.g. HAZUS-MH Mitigation & planning Flood risk analyses
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Flood Studies FEMA funded Many partners Conditions leading
to floods Flood magnitudes Peak profiles and
inundation maps Synthesis of
magnitude & maps June ‘08 – IN & WI
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Flood study inundation maps
Set HWMKs Run levels Combine mark
location & elevs, DEMs Interpolate
between marks –custom GIS app.
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PDF and GIS file formats
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NWS AHPS: Advanced Hydrologic Prediction Service
Forecast stage at flood forecast points Collocated at gages
http://www.weather.gov/ahps/
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Inundation-map Libraries DEMs + hydraulic
model Gage/HWMK
calibration data GIS generated maps bankfull-record stage Predefined map interval
Linked to forecast Served 24/7/365 thru
AHPS
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AHPS Library, Findlay OHUSGS in Cooperation with Findlay and NWS
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The next step
Dynamic real-time application Mines USGS/NWS data Hydraulic model run
on-the-fly Responds to changing
gage & forecast info Outputs RT &
predicted maps
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Real-time inundation mapping IN Silver Jackets
Pilot Project 11-mile reach of
White River, Indianapolis Tied to
streamgage/flood forecast point
Funding•City of Indianapolis•IDHS•USGS•Indianapolis Museum of Art
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SOA – Service Oriented Architecture
Allows different applications to exchange data with one another.
Products/services based on interoperability of independent & distributed applications.
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FASTMECH Calibration
Real-time USGS gage and NWS flood forecast data
FastMech runs on IU’s “Big Red”
Loss Calculation Process
Maps and Reports
Flood Depth Grid Data
Loss Estimate
Parcel Data
Flood Map
Parcel & HAZUS Data Service
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Summary and Conclusions Inundation maps + RT/forecast data =
powerful new tool for flood loss reduction Partnerships make it possible Highly expandable in scope and scale SOA = expandability & future potential Public flood education/ outreach Travel-time –spill applications Levee & dam breach applications
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Questions?