Evaluation of Groundwater Suitability for Domestic and Irrigational Purposes:A Case Study from Mingoa River Basin,Yaounde,Cameroon

作     者：Tabue Youmbi Jean Ghislain Feumba Roger Wethe Joseph Ekodeck Georges Emmanuel De Marsily Ghislain 

作者机构：Department of Earth SciencesUniversity of Yaounde IYaoundeCameroon Centre Regional pour l’Eau Potable et l’Assainissement a Moindre coutOuagadougouBurkina Faso Universite Pierre Marie Curie de Paris 6 et Ecole des Mines de ParisParisFrance 

出 版 物：《Journal of Water Resource and Protection》 (水资源与保护（英文）)

年 卷 期：2012年第4卷第5期

页      面：285-293页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

基　　金：supported by International Development of Research Center(IDRC) 

主　　题：Groundwater Suitability Mingoa Watershed Yaounde Cameroon Central Africa 

摘      要：A baseline study involving analyses of subsurface water samples from the Mingoa river basin (longitude: 11°30′E;latitude: 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 then, induces acidic waters. Groundwater samples are generally characterized by low conductivity values, of which 100% are within the range (55 ≤ EC ≤ 1500 μS/cm). The mean values of the major cations (Ca2+, Mg2+, Na+, K+) and anions (SO42– , Cl–, HCO3– ) are all within the World Health Organization (WHO) standards. Two of the springs sampled have nitrate (NO3– ) contamination. Even though contamination and acidic waters exist in some of the springs, the majority of the springs are excellent for agricultural and domestic purposes. Assessment of the groundwater for agricultural irrigation revealed two main categories. These are low salinity-low sodicity (C1-S1) and medium salinity-low sodicity (C2-S1), using the US Salinity Laboratory (USSL) classification scheme. As much as all of the samples plotted in the “excellent to good and “good to permissible categories on the Wilcox diagram. The groundwater in the study area may therefore be regarded as good for irrigation activities. The major identifiable geochemical processes responsible for the evolution of the various ions are mineral weathering, chemical reactions and anthropogenic activities.