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K. M. Ibe, G. I. Nwankwor and S. O. Onyekuru, “Assessment of Groundwater Vulnerability and Its Impact to the Development of Protection Strategies for Water Supply Aquifer in Owerri S.E. Nigeria,” Environmental Monitoring and Assessment, Vol. 67, No. 3, 2001, pp. 323-360.

has been cited by the following article:

• TITLE: Groundwater Annual Dynamics in the Basins of Woro and Chago (Eastern Niger) as Affected by Seasonal Variability and Anthropic Activities

  AUTHORS: Adamou Mahaman Moustapha, Nazoumou Yahaya, Aw Sadat, Awaiss Yahaya, Ambouta Karimou

  KEYWORDS: Basin; Groundwater; Drought; Evapotranspiration; Variation

  JOURNAL NAME: Journal of Water Resource and Protection, Vol.5 No.9, September 30, 2013

  ABSTRACT: The Sahelian region is known to have extremes climatic constraints since the end of the seventies. The studied zone is characterized by an extreme spatial and temporal variability of the environmental factors, complicating the understanding of the mechanisms governing the functioning of the hydrological system in the basin. The evapotranspiration was very high (1975 mm/an), whereas the local annual rainfall was around 300 mm/year. The piezometric data showed a rise of the groundwater level during the rainy season and a decrease in the dry season. The water balance obtained using the Penman-Monteith method showed the predominance of the evapotranspiration (75% to 80% of the rainfall) on the drainage (20% to 25% of the precipitations).