Physicochemical and Bacteriological Quality of Ground Water in the Basin of Gounti Yena Valley in Niamey City (Niger Republic)  

作　　者：Halidou Alassane Hado Mahaman Moustapha Adamou Guillaume Favreau Karmadine Hima Ibrahim Dan Dano Abdourahmane Toure Amadou Nafissa Saidou Halidou Alassane Hado;Mahaman Moustapha Adamou;Guillaume Favreau;Karmadine Hima;Ibrahim Dan Dano;Abdourahmane Toure Amadou;Nafissa Saidou(Faculty of Agronomy, Abdou Moumouni University of Niamey, Niamey, Niger;IGE, Grenoble INP, CNRS, IRD, Grenoble Alpes University, Grenoble, France;Faculty of Science and Technology, Abdou Moumouni University of Niamey, Niamey, Niger;Medical and Health Research Center, Niamey, Niger;Quali Control Lab, Niamey, Niger)

机构地区：[1]Faculty of Agronomy, Abdou Moumouni University of Niamey, Niamey, Niger [2]IGE, Grenoble INP, CNRS, IRD, Grenoble Alpes University, Grenoble, France [3]Faculty of Science and Technology, Abdou Moumouni University of Niamey, Niamey, Niger [4]Medical and Health Research Center, Niamey, Niger [5]Quali Control Lab, Niamey, Niger

出　　处：《Journal of Water Resource and Protection》2022年第2期186-220,共35页水资源与保护（英文）

摘　　要：The Gounti Yéna valley, the subject of this study, is a tributary of the Niger River, it is the main watercourse that divides the left bank of the city of Niamey into two unequal parts. The surface area of its watershed is estimated at about 62 Km2. The objective of the present study is on the one hand to evaluate the current state of the physico-chemical and bacteriological quality of the water of Gounti Yéna basin, and on the other hand to define the risks of water pollution and its origin in the face of the phenomenon of rising water table of this basin. In order to carry out this work, we proceeded to a study of the evolution of the physicochemical and bacteriological parameters of the water of the basin of Gounti Yéna during the period going from November 2020 to October 2021, at the level of four points of sampling chosen from the upstream to the downstream of the basin. The results obtained showed that the physico-chemical quality of the water in Gounti Yéna basin is influenced by the lithology of the watershed, climatic factors (rainfall and temperature) and anthropic actions. This study also highlighted the presence of fecal contamination in the water of the Gounti Yéna basin, with a greater degree of emphasis during the rainy season. This contamination remains a concern and may constitute a health risk.The Gounti Yéna valley, the subject of this study, is a tributary of the Niger River, it is the main watercourse that divides the left bank of the city of Niamey into two unequal parts. The surface area of its watershed is estimated at about 62 Km2. The objective of the present study is on the one hand to evaluate the current state of the physico-chemical and bacteriological quality of the water of Gounti Yéna basin, and on the other hand to define the risks of water pollution and its origin in the face of the phenomenon of rising water table of this basin. In order to carry out this work, we proceeded to a study of the evolution of the physicochemical and bacteriological parameters of the water of the basin of Gounti Yéna during the period going from November 2020 to October 2021, at the level of four points of sampling chosen from the upstream to the downstream of the basin. The results obtained showed that the physico-chemical quality of the water in Gounti Yéna basin is influenced by the lithology of the watershed, climatic factors (rainfall and temperature) and anthropic actions. This study also highlighted the presence of fecal contamination in the water of the Gounti Yéna basin, with a greater degree of emphasis during the rainy season. This contamination remains a concern and may constitute a health risk.

关 键 词：Pollution Physicochemistry BACTERIOLOGY Water Table FLOODING Niamey 

分 类 号：F42[经济管理—产业经济]