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).