Transcript Improving Flood Risk Management in Informal Settlements of Cape Town (ppt, 4 mb)

Improving Flood Risk
Management in the Informal
Settlements of Cape Town
Bethany Bouchard
Ashley Goncalo
Michael Susienka
Kevin Wilson
Liaisons:
Mogamat Kenny
Barry Wood
Catchment, Stormwater, & River Management
The Forecast
• Our Mission
• Information
Collection
• Addressing the
Issues
• Findings and
Recommendations
• Questions
Worcester Polytechnic Institute
Our Mission
Conduct a Flood
Risk Index (FRI)
Pilot Study
Create Guidelines
to Assist
Communities
Generate
Recommendations
for the City of Cape
Town
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Information Collection
• Settlement Visits
• On-Site and City
Interviews
• Case Study
Research
• GIS and Rainfall
Data Analysis
• Brainstorming
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Incoming Residents
are
Addressing
the
Issues
Infrastructure
Lack
Poor
of Location
Resources
Blockages
Unaware of High Risk Areas
Associated with Flooding
Increased
Flood Risk
within the
Informal
Settlements
Worcester Polytechnic Institute
Flood Risk Index – Pilot Study
Prototype Flood Risk Index
Purpose:
How
it works:
• To prioritize
settlements
at higher
Based
on measurable
indicators
flood risk forofhousing
upgrade
• Probability
a flooding
event
• To determine appropriate community
• Topography
capacity measures to be implemented
• House
structure susceptibility
in a settlement
• Community capacity and awareness
Flood Risk Index – Pilot Study
Mapping High-Risk Areas
Purpose:
• Indicate areas with high flood
risk based on topographical
location
• Use findings for topographical
indicator in the FRI
Flood Risk Index – Pilot Study
600
500
450
400
350
300
250
200
150
100
50
0
Rainfall (mm)
500
400
300
200
100
0
2004
2005
2006
2007
Year
Rainfall
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D6 Reports
D7 Reports
Number of incident reports
Flood Incident Reporting
Flood Risk Index – Pilot Study
Recommendations
• Improved
topographical data
collection methods
• More precise
records of
displaced residents
• Flood marshals
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Flood Risk Index – Pilot Study
Flood Marshals
• Sets foundation for
FRM at community
level
• Consistent data
collection
• Community
education
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Creating Guidelines to Assist
Communities
Creating Guidelines to Assist
Communities
Examples of how to mitigate seepage
via structural adaptations including
realistic photographs
Creating Guidelines to Assist
Communities
Creating Guidelines to Assist
Communities
Example of how to mitigate leakage in household:
How would the City communicate these suggestions
to the settlement residents?
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Creating Guidelines to Assist
Communities
• Analyzed positives, negatives, audience, amount to be
generated, estimated cost
School Folders and
Education Program
• Children as audience
• Tangible, multi-use product
• Increases community capacity
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Signs in Public Areas
(e.g. taps, bathrooms, public phones)
Results and Deliverables
Recommendations for the City of Cape Town
Worcester Polytechnic Institute
Results and Deliverables
Recommendations for the City of Cape Town
Worcester Polytechnic Institute
Results and Deliverables
Recommendations for the City of Cape Town
Worcester Polytechnic Institute
Thank You for Your Attention!
Questions?
Worcester Polytechnic Institute