Presentation by Shristi Vaidya, Deltares, Netherlands, at the Symposium Knowledge and Innovation for Decision Making, during Delft Software Days - Edition 2017. Friday, 27 October 2017, Delft.

1. Impacts of flooding on Critical
Infrastructure
Case study of Manzese ward, Dar es Salaam
27th October 2017

2. Recent flooding in Dar es Salaam

3. Recent flooding in Dar es Salaam

4. Recent flooding in Dar es Salaam

5. Objectives
 Get an overview of the interdependencies among CI networks in
Manzese ward
 Identify the most vulnerable groups of the communities (based on
age, gender, income groups and disability) due to CI disruption or
failure

6. Manzese ward
 Mostly informal settlement
 Poor drainage
 Poor solid waste management
Waste disposal on the
water ways
Poor drainage River flood plain area

7. Actions in Manzese ward
 Train the Red Cross volunteers who live in Manzese
ward
 Red cross volunteers conducted Circle-bao workshop
with the stakeholders of Manzese ward

8. CIrcle-Bao

9. Steps of CIrcle-Bao workshop
Open data and
information on CI
available from the client
Background
information
Interactive
mapping and
stakeholder
identification
Participatory
discussion
among the
stakeholders
Clearly visible
results of CI
interdependen
cies

10. Outcomes of CIrcle-Bao in Manzese
Showing interdependencies Showing interdependencies
and intensity of impacts
“It is magical how CIrcle-bao clearly shows the relations among the
Critical Infrastructure. I am very thankful that our ward Manzese
was chosen for this training.” (Quote from a Tanzania Red Cross
Volunteer).

11. Benefits of the workshop results?
Decision Makers
- for strategic planning of the preventive interventions, preparedness
and disaster response
- Prioritization of actions based on the severity of impacts
Local stakeholders and citizens
- Better informed and have an overview of the CI system in their area
- take preparedness measures to reduce the impacts of disruption or
failure of CI
Humanitarian groups
- Prioritization of the actions based on urgency and identified vulnerable
groups of the communities

12. - Local involvement in a workshop such as Circle-Bao is more powerful because they
can relate to the situations
- With better information and overview, the local stakeholders are empowered to raise
their voice and influence strategic planning and decision making to reduce the flood
impacts and vulnerabilities of the community groups
Lessons learnt
- Keep it simple

13. - Parameters for measuring the impacts (e.g. delay, cost)
- Interpretation of the severity of the impacts
- Are 2 days enough for training the volunteers?
- Language barrier
Limitations

14. Asante Sana!
Thank you very much!