Roger Feumba

University of Yaounde I | UY1 · Département des Sciences de la Terre et de l'Univers

Providing everyone daily with safe drinking water is a moral imperative. Yet, sub-Saharan Africa seems not able to achieve “safe drinking water for all” by 2030. This sad situation calls for a closer examination of the water supply options for both rural and urban populations. Commonly two main aspects are considered: (i) behavioural responses to a...

Ndé Division in West-Cameroon is facing with water supply although many attempts of restoring existing SCANWATER facilities by Bangangté Municipality. In order to address the issue, we assess the exploitable pumping flow rate of catchment aquifers and its hydraulic properties by using Jacob and Theis method, and define protection zones with Hoffman...

This study aims to investigate a methodology to map regional discontinuities, based on a combined structural geomorphology, analysis of images and maps and examinations of bore's data base linked to the hydraulic productivity of boreholes. This method is implemented in the region of Mbam and Lekie (Cameroon). In a first step, the methodological app...

L'estimation de la recharge des nappes est très importante pour une bonne gestion des eaux souterraines. Ce présent travail de recherche porte sur la méthode WTF au cours des évènements pluvieux subséquents dans un bassin versant pendant 05 ans allant de juillet 2015 à juin 2020. L'approche méthodologique menée a consisté à faire un suivi des eaux...

Les routes jouent un rôle important dans le développement socioéconomique d'un pays. Le réseau routier camerounais est insuffisant. Néanmoins les routes existantes sont confrontées à une faible durée de vie. L'objet de cette étude est de déterminer les caractéristiques physiques du sol et de montrer leurs influences sur la durabilité du corps de ch...

L’objectif de cet ouvrage est d’analyser les impacts liés à la présence d’une décharge d'ordures urbaine existante, à ses lixiviats et biogaz sur l’écosystème local et la santé des travailleurs et des riverains de l’établissement. Les auteurs ont utilisé les approches transdisciplinaire, participative, et genre (approche Ecosystémique et santé huma...

L’étude s’est déroulée dans la zone industrielle de Bonabéri, située à l’Ouest de la ville de Douala. Elle constitue une importante contribution à l’hydrogéologie et au fonctionnement hydrodynamique des aquifères superficiels des bassins sédimentaires côtiers. Bonabéri constitue une unité morphologique de basse altitude influencée par les mouvement...

This study is a help approach to protect and prevent pollution of the unconfined aquifer of Douala sedimentary basin. It was conducted in order to identify areas at high risk of contamination and protect them in the long-term. Maps were validated based on field measurements. The assessment was conducted using DRASTIC and GOD methods. Statistical an...

Comme de nombreuses villes d’Afrique, Yaoundé, au Cameroun, connaît une croissance urbaine exponentielle (5,6 % par an). Aujourd’hui, des bidonvilles qui s’étendent rapidement et des quartiers mal desservis occupent 40 % du territoire de la capitale.

The purpose of this project is to determine actions to undertake in the domains of sanitation, practices of the various actors, allowing the improvement of hygiene and human health not only in the coastal areas, but also in slums of the humid tropical large cities. The project is implemented both in slums districts of Douala 4 and Yaoundé 6 Sub-div...

The aim of this article consists of developing an ecosystemic approach to collect information about groundwater pollution in order to determine its origin and infer the health risks in Mingoa's watershed through the study of 12 spontaneous settlements. From an environmental point of view, family interviews and direct observations allowed us to inve...

The city of Yaoundé in Cameroon, like many cities in Africa, is experiencing rapid urban growth (5.6% per year). Quickly expanding slums and poorly serviced neighbourhoods now make up 40% of the current total land area of the city. In 2001, a team of researchers from the Ecole Nationale Supérieure Polytechnique and the Université de Yaoundé I and I...

Il est admis que des pratiques saines et des comportements dignes améliorent les conditions d’existence des habitants d’une aire géographique donnée et peuvent indubitablement prolonger la durée de vie humaine. Malheureusement, dans les villes des pays du Sud, le vécu quotidien montre des écarts importants dans les ménages dus à l’ignorance, à la n...

Cet ouvrage est le résultat d’une recherche menée dans un écosystème urbain à Yaoundé par une équipe transdisciplinaire entre 2002 et 2009 avec le soutien technique et financier du Centre de recherche pour le développement international (CRDI, basé au Canada). L’action a démarré dans le quartier Melen 4, un quartier à habitat spontané situé en face...

In Douala, economic capital of Cameroon, annual rainfall and temperature from its meteorological station (latitude: 4˚00'N; longitude: 9˚43'E; elevation: 5.0 m) were obtained and analysed to investigate the impact of climate variability on groundwater recharge. The climate shows a strong evidence of changes towards persistent weather conditions. Th...

This study based on the quality of underground water of slum districts in the industrial zone of Bonaberi-Douala in Cameroon was lead in order to reinforce sensitizing campaigns undertaken by their Development Committee about healthy behaviour. Between 9°40’2,65’’-9°41’26,28’’E and 4°3’51,88’’-4°4’48,62’’N, this watershed is 4.366 km² in area and i...

Many research project have been led in Yaounde between 1995 and 2000 based on water and sanitation according to mono or multidisciplinary approach including mainly specialists of water sciences and civil engineering. After these actions through workfields and laboratory analyses, few observations have been made: �Slums district of Yaounde represent...

This study was carried out in partnership between LESEAU and ERA – Cameroun either to reinforce sensitization campaigns undertaken by the project team based on hygiene and sanitation, or to identify determinants which contribute of presence of harmful substances in drinking water of households of 15 slums district of Yaounde in Cameroon. On exactly...

La presente etude traite de la vulnerabilite des nappes phreatiques et de la proposition d’un perimetre de protection dans le bassin versant de la Mingoa, menacees par les foyers de pollution notamment les latrines traditionnelles representant 83 % des ouvrages d’assainissement individuel. Ces nappes phreatiques sont fortement sollicitees par pres...

The aim of this study based on realisation of hydrogeological map and determination of the quality of underground water of “City of Peace” in Douala was lead by LEWS’s researchers of NASE of Yaounde in Cameroon in order to reinforce sensitizing undertaken by their Development Committee about healthy behaviour. On 98 wells identified with the aid of...

A baseline study involving analyses of subsurface water samples from the Mingoa river basin (longitude: 11˚30′E; lati-tude: 3˚52′N) in migmatitic complex in Yaounde Cameroon (central Africa) was carried out to assess their suitability for drinking, domestic and agricultural purposes. Study results show that pH is ranged between 5.1≤ pH ≤ 5.8 and th...