Apport de la variabilité spatiale des caractéristiques physiques du bassin versant dans la modélisation hydrologique et les sous-produits du bilan hydrologique : cas du bassin versant de l’aval Mekerra, Algérie

Abstract

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Impacts of groundwater over exploitation on the renewal and hydrodynamic behavior of the alluvial aquifer of Sidi Bel Abbes (Algerian NW)

“…8d and 11d) is due to exceptional precipitation recorded during the last 2 years of the observation period. According to Otmane et al (2017) and Otmane et al (2019), rainfall recorded in 2008-2009 concurs in recurrences of more than a century at all stations included in this study.…”

“…For the 1996-2010 period, some cases of extreme humidity occur along with an increase in drought conditions (62%). This is due to the climate change phenomenon affecting the region during the last decades (Talia et al 2011;Otmane et al 2019). Therefore, over the three considered periods from 1971 to 2010, the drought prevails significantly with time, accounting for 38% to 62% (1996-2010) of cases.…”

Modelling the monthly hydrological balance using Soil and Water Assessment Tool (SWAT) model: A case study of the Wadi Mina upstream watershed

“…In the study basin, only 29% of the rainfall that falls into the basin contributes to runoff or infiltration into aquifers. This distribu- The disparity in the distribution of the hydrological balance components in Algerian basins was also observed by Otmane et al (2019). Their study of the Wadi Mekerra basin (northwest Algeria) using the SWAT model revealed that approximately 72% of precipitation in the basin returns to the atmosphere through evapotranspiration, with only 6% generating flow into the Wadi.…”

“…Originally designed to predict water quantity and quality at the watershed level under various meteorological and spatial conditions and at different time scales (daily, monthly and yearly), SWAT can also aid in planning and decisionmaking processes aimed at environment protection and ensuring water availability for future uses (Silva et al 2015;Fatichi et al 2016). SWAT has been utilized in numerous projects worldwide (Sophocleous and Perkins, 2000;Tripathi et al 2003;Hao, 2004;Laurent, 2007;Xiang et al 2022), and has been applied in several watersheds in Algeria (Zettam et al 2017;Hallouz, 2018;Otmane et al 2019;Mami et al 2021).…”