Abstract A three‐dimensional variably saturated flow model was developed for assessing future global water resources and parameterized groundwater pumping. We applied this to an actual watershed verify its validity as Earth System Model. For applicability, the parameterization method multi‐layered pumping verified through comparison with observations MODFLOW results. The proposed in study is ap...

excessive withdrawal of groundwater and reduced rainfall in recent years have caused the drawdown of groundwater table. therefore, it is necessary to manage it for preventing its damage. the present study was carried out to investigate the effect of increasing the irrigation efficiency on groundwater fluctuation on ajab-shir plain aquifer. the aquifer was simulated by using visual modflow 3.1 s...

this study will evaluates climate change impacts on groundwater resources in hamadan-bahar alluvial aquifer in the west of iran. different climate models are weighted in the basis of their ability in predicting monthly observed climate data in the base study period (1970-2000). with respect to climate models weights and their predictions, precipitation and temperature changes in 10, 50 and 90 p...

the dominant traditional view to designing drainage systems explains drainage goals only in terms of crop yield increase and rhizosphere improvement while ignoring the environmental impacts of drainage projects. nowadays, this view has been changed into a new one in which both environmental and agricultural purposes are taken into consideration. depth and spacing of subsoil drains are important...

In the analysis of streamflow depletion, the Hunt (1999) solution has an important advantage because it considers a partially penetrating stream. By extending the Hunt drawdown solution, this paper presents semianalytical solutions for gaining streams that evaluate the induced stream infiltration and base flow reduction separately. Simulation results show that for a given deltah (the initial hy...

An analysis of groundwater flow and transport processes of arsenic in the flow domain of the Yamuna sub-basin located in West Bengal (India) is presented. The objectives of the analysis are: to conceptualize the groundwater flow domain, to determine groundwater flow paths and groundwater velocities, to study arsenic transport in the flow domain, and to study the well captures zones. The first t...