improving flood risk management in the informal settlements of cape town liaisons: mogamat kenny...
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Improving Flood Risk Management in the Informal
Settlements of Cape Town
Liaisons:Mogamat KennyBarry WoodCatchment, Stormwater, & River Management
Bethany Bouchard
Ashley Goncalo
Michael Susienka
Kevin Wilson
Worcester Polytechnic Institute
• Our Mission
• Information Collection
• Addressing the Issues
• Findings and Recommendations
• Questions
The Forecast
Worcester Polytechnic Institute
Our MissionConduct a Flood Risk Index (FRI)
Pilot Study
Create Guidelines to Assist
Communities
Generate Recommendations for the City of Cape
Town
Worcester Polytechnic Institute
Information Collection
• Settlement Visits• On-Site and City
Interviews• Case Study
Research• GIS and Rainfall
Data Analysis• Brainstorming
Worcester Polytechnic Institute
Lack of ResourcesPoor LocationAddressing the Issues Associated with Flooding
Incoming Residents are Unaware of High Risk Areas
Infrastructure Blockages
Increased Flood Risk within the Informal
Settlements
Flood Risk Index – Pilot Study Prototype Flood Risk Index
Purpose:• To prioritize settlements at higher
flood risk for housing upgrade• To determine appropriate community
capacity measures to be implemented in a settlement
How it works:Based on measurable indicators• Probability of a flooding event• Topography• House structure susceptibility• Community capacity and awareness
Flood Risk Index – Pilot StudyMapping High-Risk Areas
Purpose:• Indicate areas with high flood
risk based on topographical location
• Use findings for topographical indicator in the FRI
Worcester Polytechnic Institute
Flood Risk Index – Pilot Study Flood Incident Reporting
2004 2005 2006 20070
100
200
300
400
500
600
050100150200250300350400450500
Rainfall D6 Reports D7 Reports
Year
Rai
nfa
ll (
mm
)
Nu
mb
er o
f in
cid
ent
rep
ort
s
Worcester Polytechnic Institute
Flood Risk Index – Pilot StudyRecommendations
• Improved topographical data collection methods
• More precise records of displaced residents
• Flood marshals
Worcester Polytechnic Institute
Flood Risk Index – Pilot StudyFlood Marshals
• Sets foundation for FRM at community level
• Consistent data collection
• Community education
Creating Guidelines to Assist Communities
Examples of how to mitigate seepage via structural adaptations includingrealistic 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?
Creating Guidelines to Assist Communities
Worcester Polytechnic Institute
Worcester Polytechnic Institute
• Analyzed positives, negatives, audience, amount to be generated, estimated cost
School Folders and Education Program Signs in Public Areas
(e.g. taps, bathrooms, public phones)•Children as audience•Tangible, multi-use product•Increases community capacity
Creating Guidelines to Assist Communities
Worcester Polytechnic Institute
Finding
Need to strengthen communication between
City departments
Recommendations
• Informational database accessible to all relevant departments
Results and DeliverablesRecommendations for the City of Cape Town
Worcester Polytechnic Institute
Results and DeliverablesRecommendations for the City of Cape Town
Finding
Minimal management at the community and household
level
Recommendations
• Implementation of community-based disaster risk management program
• Collaboration with academic institutions (such as Disaster Mitigation for Sustainable Livelihoods Programme, UCT), and/or other NGOs
Worcester Polytechnic Institute
Finding
Litter blockages, underutilization of skips
Recommendations
• Community preference of method of rubbish storage/removal
• Incentive program
Results and DeliverablesRecommendations for the City of Cape Town
Worcester Polytechnic Institute
Thank You for Your Attention!
Questions?
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