Design and implementation of a GIS for flood protection in Dakar peri-urban area (Senegal)

Client : Agence de Développement Municipal (ADM)
Partners : Nordic Development Fund
Realisation : 2016-2018

SCE missions :

SCE intervened on 2 components :
Flood risk mapping

  • Acquisition and processing of recent satellite images
  • Data collection on hazard, vulnerabilities and past flood protection projects including field surveys
  • Drainage and flood modelling
  • Production of hazard, vulnerability and flood risk maps under GIS format

GIS design and implementation

  • Audit of existing water treatment plants (Legadai – 150 000 m3/day and Gefarsa – 30 000 m3/day) and recommendations for improvement
  • GIS platform design and technical specifications
  • Assistance to client for hardware and software acquisition tendering and evaluation
  • GIS installation
  • Development of GIS maintenance procedures
  • End-users training


A consequent part of Senegal’s capital city Dakar’s population currently lives in the flood-prone suburban areas of Pikine and Guediawaye, severely affected by recent floods. In order to respond sustainably to such flood issues, the Government of the Senegalese Republic, the World Bank and the Nordic Development Fund decided to implement an urban development project called “Projet de Gestion des Eaux Pluviales et d’adaptation au changement climatique (PROGEP)” (Stormwater management and climate change adaptation project)
This project, which is estimated to cost around 72.900.000 US dollars, aims at reducing flood risks in the peri-urban area of Dakar and is composed of four components, including component A: Integration of flood risks in urban planning.

The present project, part of this component A, aims at:
▪ Providing the local and national authorities with comprehensive and updated flood risk maps, through hydrologic studies and maps development
▪ Developing a GIS platform to disseminate the information among the all stakeholders.


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