zeeland and flooding - american planning...
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Zeeland and flooding
To be prepared
Simulating Floods in 3D Raising flood awareness
Hanneke Blok MA
Ylva Peddemors BEng
Olga Pleumekers Msc
Province of Zeeland
The Netherlands
Dutch Delta Area
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The Netherlands
Dutch Delta Area
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Dutch Delta Area
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Middelburg
History
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11-19-1404: First St. Elisabeth Flood
11-18-1421: Second St. Elisabeth Flood
11-05-1530: 'St Felix Mad Saturday’
11-01-1570: All Saints Flood
01-26-1682: In Zeeland 161 polders flooded
01-15-1808: Flood in Zeeland en Flanders
02-01-1953: Flood in Zeeland and Delta area
Flood in 1953
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This never again!
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Safety standards and flooded areas
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Water Safety 2012
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Multilayer Safety:
1. Prevention of flooding (water defenses)
2. Smart spatial planning to avoid
casualties and damage when flooded
3. Good crisis management when flooded
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• Robust multifunctional water defenses: high and dry, connecting safe havens and contributing to area development
• Dry robust roads when flooded
• Enough safe accessible shelter locations
• Develop no or waterproof housing in low lying areas in future
• Promote awareness and resilience inhabitants (knowing what to do)
Water Safety 2012
Threat and coping appraisal
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Threat and coping appraisal
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• People must know
what their flood risk is
and must know its
severe impact
• People must know
how to cope with this
risk
Threat and coping appraisal
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• Governments must
develop resilience
strategies with the people
• People are willing to work
together with governments
and emergency services
when taken seriously
• Building up relations in the
cold phase, benefits
response in the warm
phase
Threat and coping appraisal
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All aspects must
be taken into
consideration
Threat and coping appraisal
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Threat and coping appraisal
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Protection Motiavation is influenced
by other aspects as well
+ -
Threat and coping appraisal
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Effective Campaigns
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Effective Awareness campaigns
• Are personal
• Recognizable
• Made with the people
We developed
• A tool to make people aware of their risk of
flooding
• A tool to start a dialogue between
governments and people to enhance
resilience
Comprehensible message?
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Knowledge & Awareness
Flood impact calculations
A flood impact scenario shows the inland
consequences of one possible hole in dike
or dune.
Every single scenario is a pure theoretical
outcome conform nation-wide established:
• (hydraulic) boundary conditions
• formulas
• assumptions
• manuals
• legislation
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Character profile of Zeeland
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• Diked areas: 8 rings
• Primary sea defences:
360 miles (red)
• Secondary flood defences:
380 miles (green)
• Other inland dikes and
elevated tracks:
many hundred miles
The model
LIZARD FLOODING
Database
Web interface
Sobek
HIS schade en
slachtoffers
Users Login account
Expert
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Data input for simulation
Voorbereid op overstromingen
• Surface-level grid
• Surface roughness
• All aspects of watercourses
• Culverts, cuttings and civil engineering
works
• Elevated tracks and inland dikes
• Extra layers and shape-files
Sobek
Expert
Data input for simulation
Voorbereid op overstromingen
• Output Sobek
• Economic value grid
• Population grid
• Area functions
• Land use
HIS schade en
slachtoffers
Expert
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Calculating flood impact scenarios
Calculating flood impact scenarios
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The outcome
The results of one flood impact scenario are:
SOBEK:
• 2D flood impact animation
• Water depths
• Current velocities
HIS-SSM:
• Victims
• Economic damage
More than 10.000 flood impact scenarios
nation-wide in the Netherlands
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Database
Web interface
Users Login account
Flood impact scenarios
The aim of calculating flood impact
scenarios is to identify potential flooding in
the Netherlands in an unambiguous and
comparable way across province border.
AND
How to use -for engineers- understandable
outcome to enlarge flood awareness and
encourage resilience among
decision makers, citizens and businesses.
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Users Login account
Expert
Lizard Flooding database
• Consulting scenarios
• Adding scenarios
• Sharing scenarios
• Comparing scenarios
• Analysing scenarios
• Exporting all results
• And calculating 2D Movie: vlissingen_2D
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Database
Web interface
Users Login account
So far, so good
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Is there a better way to communicate?
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How to use -for engineers- understandable
outcome to enlarge flood awareness and
encourage resilience among
decision makers, citizens and businesses?
2D into 3D
What is the response of 3D viewers so far?
• Interactive 3D is a positive tool 98%
• It is clear and informative 98%
• It does not frighten me 76%
• I have not take measures yet 77%
• I will take precaution now 52%
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Conclusion so far
The more general messages about flood
awareness and resilience, the sooner
people are off hook. It does not lead to
action. DO make your message specific,
area based and interactive.
3D visualization at a local level in peoples
own living area ensures flood risks are
real.
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Conclusion so far
It is a powerful communication tool towards
non-engineers
It reflects the success of 3D in cinemas
It appeals both young and old
3D visualisation tells a thousand words
(facts and figures)
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Interactive 3D visualization
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But first…!
Better visualisation needs better simulation
models
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woensdag 2 mei 2012
Water model
= 80% elevation model
Water model
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woensdag 2 mei 2012
= 80% elevation model
Water model Water model Water model
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woensdag 2 mei 2012
= 80% elevation model
Water model Water model Water model
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woensdag 2 mei 2012
= accurate elevation model
Which level of detail?
• 100 x 100 m
• 1 x 1 m
Water model A sophisticated watr model
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woensdag 2 mei 2012
100 x 100 m
10 x 10 m
1 x 1 m
Water model What data is available
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woensdag 2 mei 2012
Our Goal:
• The use of high detailed data in water models
• More calculation points:
From 1.000.000 to 1.000.000.000!
• Much faster:
From days to minutes.
Water model 3Di Water management
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woensdag 2 mei 2012
Water model
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3Di Water management
woensdag 2 mei 2012
Water model Demo 3Di calculation model
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woensdag 2 mei 2012
Water model 3D visualization
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woensdag 2 mei 2012
Demo 3D vizualisation Water model Demo 3D visualisation
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Contact
Hanneke Blok
Ylva Peddemors
Olga Pleumeekers
www.flood-aware.com
www.3di.nu
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