Local Consultation on Floods in SaintLouis

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Local Consultation on Floods in Saint-Louis

• Mrs Khady DIAGNE (Enda TW)
• Lusaka,Zambie, May , 5 to 7 th 2004
  

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Introduction

• Local consultations were held on 13-14 April,
  2004, in Saint-Louis as requested at the Nairobi
  meeting. All actors in the City of Saint-Louis
  were invited to these Consultations

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Openning Ceremony with the Governor
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Introduction (to be continued)

• (NGOs, Urban Development Division, Environment
  and Protected Settlements Division, Water Supply
  Division, City Technical Services Department,
  Neighbourhood Councils, Grassroots Community
  Organisations, the Press...)
• The workshop was opened by the Governor of
  Saint-Louis Region.
• The following programme was drawn up

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PROGRAMME

• Day 1
• -         Workshop Formal Opening
• -         Welcome Address by ENDA
• -         Address by Saint-Louis City Mayor
• -         Address by UNDP Representative
• -         Address by Saint-Louis Governor
•  
• -         Coffee Break

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Programme

• Report on the conclusions of the Nairobi
  Regional Workshop (by Mrs Khady Diagne, ENDA
  Third World)
• - Preventive measures of the Urban Development
  Division concerning phenomena related to urban
  development, environmental changes and natural
  risks and their impact on local development (by
  Mrs Fagamou Sy, Head, Environment Regional
  Division)
• - Discussions

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Programme (to be continued)

• Preventive measures of the City Technical
  Services Department relating to floods in
  Saint-Louis (by Mr Bara Diop, Director, Technical
  Services)
• Contribution of Remote Sensing and Geographical
  Information Systems (GIS) to city flooding
  management (Dr Soulèye Wade, Deputy Director,
  Institute of Earth Sciences Cheikh Anta Diop
  University of Dakar)

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Programme (to be continued)

• Lunch Break
• Presentation of a draft Plan of Action to be
  examined thoroughly in thematic workshops (by
  Malick Gaye
• Beginning of thematic workshops on
  sensitization and information strategies, local
  and community structure organisation,
  identification of risk aggravation or reduction
  problems and factors, and preventive measures.

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Programme (end)

•  
• Day 2
• Workshop Reports
• Discussion of workshop reports
• Coffee break
• Presentation and adoption of the final work
  plan
• Lunch and workshop closure

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Beginning of the workshop
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Roles of the Regional Environment and Protected
Settlement Division in national disaster
prevention

• In Saint-Louis people have long been disturbed by
  floods and their disastrous effects, for example
• -    Houses and streets over flooded.
• -  Food supplies and other goods (furniture,
  cattle) lost.
• -    Septic tanks broken and their content mixed
  up with rainwater.
• -  Bad sanitary situations affecting peoples
  health, particularly childrens

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Roles of the Regional Environment and Protected
Settlement Division in national disaster
prevention (to be continued)

• -     Many localities inaccessible for months
• - The rising river waters are a threat
  particularly to Saint-Louis island.
• -  Many houses may collapse and cause
  considerable damages to their inmates.
• In order to prevent such disastrous situations,
  the Regional Environment and Protected Settlement
  Division proposes that

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Roles of the Regional Environment and Protected
Settlement Division in national disaster
prevention (to be continued)

• -  a study of the possible impact of any building
  should be carried out prior to its construction
• - no building should be allowed in any area
  unfit for urban settlement.
• - all building infrastructure should be allowed
  by the Regional Environment and
  Protected Settlement Division.
• - that areas liable to flooding should no longer
  be filled up with waste because waste is a threat
  to peoples health in the rainy season.

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Roles of the Regional Environment and Protected
Settlement Division in national disaster
prevention (to be continued)

• The Regional Division should
• - forbid quarrying for sand on the river banks
  and seaside.
• - participate in flood prevention activities.
• - forbid permanent house building on the river
  banks and seaside.
• - inform, sensitize and educate people to flood
  risks management.

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Roles of the Regional Environment and Protected
Settlement Division in national disaster
prevention (end)

• Impacts on Local Development
• - Optimised economic development
• - Enhanced quality of life and healthy
  environment
• - Well secured material goods.

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2. Preventive Measures of the City Technical
Services Department Concerning Floods in
Saint-Louis

• Saint-Louis City Technical Services Department
  carries out flood risk prevention and
  vulnerability reduction activities. In
  particular, it provides support for implementing
  Flood Risk Prevention Plans which are under the
  Authority of the Ministry of the Interior and
  Local Government.

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2. Preventive Measures of the City Technical
Services Department Concerning Floods in
Saint-Louis (to be continued)

• City Administration Measures
• The heavy rains that have fallen these past few
  years with the attendant river floods have led
  public authorities to launch an emergency flood
  control programme
• The City of Saint-Louis has a sewerage disposal
  system that dates back to the pre-independence
  years. Thus, in 1985 a rehabilitation and
  extension programme was initiated and many pipes
  were laid thus several neighbourhoods at Sor
  locality were equipped with a sewerage system.

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2. Preventive Measures of the City Technical
Services Department Concerning Floods in
Saint-Louis (to be continued)

• The 1996 floods due to the rising river waters
  and heavy rains led the authorities to take
  measures in order to take care of the City
  sanitation.
• The emergency plan started in 1999 is an attempt
  to improve sanitation conditions in Saint-Louis.
  Some programmes have developed sanitation
  projects some of which are under way.
• Due to financial constraints, these programmes
  are still limited in terms of extension. Actually
  the network functioning is impaired by a number
  of problems
• -    network destroyed
• - network coupling (sewerage and rainwaters)
• -  network maintenance.

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2. Preventive Measures of the City Technical
Services Department Concerning Floods in
Saint-Louis (to be continued)

• Rain and Flood Water Sanitation
• The heavy rains of the past five years with their
  attendant river floods have led public
  authorities to launch an emergency flood control
  programme
• -         Rainwater floods
• -         River water floods.

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2. Preventive Measures of the City Technical
Services Department Concerning Floods in
Saint-Louis (to be continued)

• In 1985 an extension and rehabilitation project
  was initiated and in its framework many pipes
  were laid and several neighbourhoods were
  equipped with a sewage system.
• The sewage collection and transfer system
  includes six pumping plants that the Water Supply
  Division deems functional. It is used by ONAS
  (Senegal National Sanitation Office) at the
  following levels

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2. Preventive Measures of the City Technical
Services Department Concerning Floods in
Saint-Louis (to be continued)

• -   Secondary networks
• - Low-cost connection schemas
• - Non joint sanitation systems
•   Sewage Processing
• The whole sewerage processing problem will have
  to be considered with regard to
• the use of sewage disposal materials
• - Water purification plant feasibility survey.
  To be complete, sanitation must include a
  household waste disposal and processing system.

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2. Preventive Measures of the City Technical
Services Department Concerning Floods in
Saint-Louis (to be continued)

• - The final document entitled Overall Refuse
  Disposal Plan which has already been submitted
  to BURGEAP Office for validation, has been
  amended.
• The Plan proposes reviewing
• - the institutional set-up
• - the structure of the Refuse Disposal Service
  which is the manager of the whole system all over
  the City.
• - the set-up funding scheme and the sector
  operating costs.

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2. Preventive Measures of the City Technical
Services Department Concerning Floods in
Saint-Louis (end)

• It is becoming more and more urgent to implement
  this Overall Refuse Disposal Plan initiated
  in 1997. The Plan implies a combination of two
  systems
• -  the City Control Service
• - CETOM NGOs through Refuse Disposal Committees

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3- Contribution of Remote Sensing and
Geographical Information Systems (GIS) to city
flooding management
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Natural hazards management with RS and
GIS Application to the hydrology of Senegal
river and the flooding risks of the city of
Saint Louis

Contribution of RS and GIS to the management of
urban floods at Saint Louis (Senegal) and Douala
(Cameroon)
One of the small rivers crosscutting Douala

• At Douala, city situated on a low land, floodings
  are due to water overflowing from small
  crosscutting rivers, during the rainy seasons

Saint Louis 1999 flooding

• At Saint Louis, floodings happen during the rainy
  seasons (August-October). They are due to the
  combination of factors such as heavy rainfalls,
  water flow, low topography, urbanisation and
  hydrological factors related to the dams
  Manantali and Diama dams built on the river

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• Flood Hazard management

• The major objective of the flood management
  project is to build a GIS on the flood phenomena
  in order to inform decision-makers about the
  strength and the factors causing the flood

• The GIS must also inform about the urban zones
  facing flood risk

• The combination of these 2 information layers
  will give indications on the vulnerability of a
  given zone

• The GIS information layers will include
  landuse/landcover maps, topographic information
  (MNT), flooded zones, hydrographic network,
  hydrological and hydrodynamic data, urbanized
  zones, soci-economic data, etc.

• For that EO data are needed optical high
  resolution and very high resolution data, radar
  PRI data, radar interferometric data

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Draft Plan of Action

• Identified Aggravating Factors
• -  natural (nature of site, relief, climate
  changes, hydrogeology / hydrology..)
• - anthropic (urban development, river bed
  control, ignorance of applicable regulations,
  unlawful activities...)

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Working group 1
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Draft Plan of Action(To be contuned)

• Preventive Solutions
• - Technical solutions (cartography, drainage
  networks, river dredging, reconstruction, new
  concepts of town development adapted to the
  context height, sharing...)
• - Information, education, awareness raising,
  repression.
• Local actors (Saint-Louis City Authority,
  Ministry of Local Government and Home Security,

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Draft Plan of Action(to be contined)

• Regional Technical Services, Grassroots Community
  Organisations, Non Governmental Organisations,
  Medias.
• Current Actions Rain Waters Master Plans,
• Establishment of a Consultation Committee (its
  Terms of Reference and Charter are to be
  elaborated ENDA).

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Draft Plan of Action(to be continued)

• (Resource Persons Regional Technical Services,
  City Authority, City Development Agency,
  Neighbourhood Councils, Grassroots Community
  Organisations, Universities, University
  Institutes, Press, Firemen Targets Local
  authorities, Schools, Neighbourhood Councils,
  Grassroots Community Organisations, Sports and
  Cultural Associations, Womens Development
  Groupings.

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Draft Plan of Action(To be continued)

• Means/Strategies Press, Cultural Activities,
  Public Talks, Conference, Leaflets,
  Public-Criers...)
• Support to Local Structures for capacity building
  (Resource Persons State, Local Communities,
  Grassroots Community, Organisations, Projects and
  Programmes, Universities, Targets Neighbourhood
  Councils,Structures involved in information,
  sensitization and educational activities
  Means/Strategies financial, logistic and
  technical support.

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Draft Plan of Action(to be continued)

• Expertise Exchanges, Local Meetings (Resource
  Persons All actors. Targets Neighbourhood
  Councils, Structures involved in information,
  sensitization, and educational activities
  Means/Strategies Establishing international,
  national, and local networks exchange visits,
  Neighbourhood Meetings, Workshops).

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Draft Plan of Action(end)

• Follow-up/Evaluation/Prospects (Resource persons
  Consultation Committee Targets All actors,
  Means and Strategies Supervision and Evaluation
  Mission (performance indicators, good practice
  qualitative appreciation, behavioural changes,
  Follow-up/Evaluation Reports...)

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Working group 2
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Establishment of a Consultation Committee

• Note Terms of Reference must be proposed
  (taking into account the existence of an ORSEC
  Plan, (i.e. a scheme for major civil
  emergencies), as well as a Draft Charter for the
  Consultation Committee.
• - A Committee to deal with the rainy season
  problems is available.
• - Reinforcement and reactivation of the already
  existing committee.
• - Execution Schedule 2004

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Thank you for your attention !
The Millennium Gate Dakar, Senegal