Flow deficit, evapotranspiration and infiltration in arid areas: The case of Southern Tellian Atlas Sub-Basins, eastern Algeria

Abstract

Knowledge of inputs into an aquifer environment still remains a task difficult to identify for a groundwater model implementing software to simulate scenarios over long periods. Due to several related factors such rain and flow regimes, and the geology and morphometry of hydrological units, the water entering in the system is a random parameter. The objective of this study is to assess the flow deficit and the recharge rate in the North of Hodna region. The hydrometric stations network managed by the Agence Nationale des Ressources Hydrauliques (ANRH), sometimes within the same watercourse, presents sufficient series to make comparisons between the flow deficits. Thus, starting from there, taking into account the sub-basins geology, we dissociated the evapotranspiration portion of water input from the infiltration. This method showed an 8% of recharge and 82% of deficit.