Egis assists Senegal in its fight against the effects of climate change in Saint-Louis


The coastal city of Saint-Louis is today under threat from the effects of climate change. Egis and its partner Deltares have been appointed to assist the Senegal Municipal Development Agency (ADM) in the sustainable and resilient development and planning of this city registered as a UNESCO World Heritage site.

Located on the River Senegal estuary, the city of Saint-Louis is exposed to the risk of coastal erosion, compounded by the effects of climate change and the risk of flooding in the delta where flows are very powerful during rainfall.
Saint-Louis’ only protection from the ocean is the Langue de Barbarie, a thin, sandy peninsula that has been undermined by the actions of mankind. In this context, people and dwellings are exposed and vulnerable, most notably in built-up coastal zones.

Working in association with Deltares (an independent Dutch institute for applied research in the field of water and subsurface), Egis will assist ADM up until 2021 to alleviate this situation and recommend sustainable and resilient planning for Saint-Louis. Several scenarios will be put forward comprising technical, economical, environmental, social and institutional components.

This assignment is an application of the studies into the impact of climate change on land and sea infrastructure and on the management of urban zones: comprehension of the issues, the design of maritime and river modelling tools, the formulation of a sustainability and urban resilience strategy.

In particular, river and sea models will be developed and calibrated based on the findings of three on-site surveys (swell, current, salinity, morphology, bathymetry, Lidar topography) covering the phenomena of river and coastal hydrodynamics, wave propagation, the impact of storms on the coastal fringe and how the coastline is changing.

This contract is part of ADM’s implementation of the storm water management and climate change adaptation project and the Saint-Louis emergency recovery and resilience project, financed respectively by the Nordic Development Fund and the World Bank.

The project is a prime example of our longstanding commitment in the fight against climate change which lies at the heart of our strategic development priorities for the coming years.