IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Flood risk management and adaptation : Flood determinants in equatorial coastal cities: case study of douala (cameroon)
Flood determinants in equatorial coastal cities: case study of douala (cameroon)
Author : NDONGO Barthelémy [1] * LAKO MBOUENDEU Stéphane [2] , AWE TIRMOU Augustine [3].
ABSTRACT
Coastal cities are usually prone to recurrent floods which slows down their social and economic development. Particularly
in equatorial areas where heavy and long lasting rains are peculiar. Those rains usually cause floods which lead to
damages to households who are most of the time low revenue. Adapting urban management and planning to this
situation, provided that climate projections for Cameroon are announcing an increase in rainfall intensity and quantity,
requires to identify the majors favourable to floods, and understand the flooding mechanism.
This paper contributes to the understanding of the issue of coastal flooding through an analysis of the determinants that
contribute to the occurrence of the phenomenon. From field surveying, some major factors have been identified and the
hydrological characteristics of the area determined through hydrological analysis. These determinants are of hydrometeorological,
hydrodynamic and human order.
The economic capital of Cameroon, Douala, was taken as a special case of coastal cities. It is characterized by heavy
rainfall with high frequency, tide fluctuations, poor drainage system and also poor storm system handling. Indeed, beyond
the physical constraints, Douala is distinguished by human practices favourable to the malfunctioning of drains. More-over,
less considerations to climatic and social dynamics in the urban planning of the city is a major weakness.
Then, to ensure sustainable development of coastal cities in general and Douala in particular, urban planning and
management should take into consideration the climate and societal characteristics and variations that might influence
urban flooding; as the damage costs are always higher than prevention measures.
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Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Flood risk management and adaptation
Date Published : 28/08/2015
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