Measures of soil and water conservation (SWC) could affect the hydrological process. The impacts of typical measures on groundwater recharge, levels and flow were analyzed based on simulated rainfall experiments and a groundwater model. The three-dimensional finite-difference groundwater flow model (MODFLOW) was calibrated and verified for bare slope, grassland and straw mulching scenarios base...

Unmodified versions of common computer programs such as MODFLOW, MT3DMS, and SEAWAT that use Cartesian geometry can accurately simulate axially symmetric ground water flow and solute transport. Axisymmetric flow and transport are simulated by adjusting several input parameters to account for the increase in flow area with radial distance from the injection or extraction well. Logarithmic weight...

s of Papers & Presentations of MODFLOW-SURFACTTM and MODHMS® HGL Software Systems HydroGeoLogic, Inc. 1107 Sunset Hills Road Ste. 400 Reston VA 20190

FRACK is a fractured media freeware flow and solute transport suite currently under development that is intended to serve as both a preand post-processor to MODFLOW. As a pre-processor, FRACK generates and maps networks of deterministic and/or stochastic fractures onto a regularly-spaced finitedifference grid, according to a fracture continuum method that closely approximates flow solutions to ...

Abstract This study used GMS-Modflow to investigate the ten-year groundwater potential in Concepcion, Tarlac. region Central Luzon, Philippines, with limited surface water, depends on as its primary freshwater source. The water demand projection estimated an increase of 38.5% from 2020 2030; hence, higher abstraction is perceived next ten years. To deviate risk associated reliance groundwater, ...

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...

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...

Vegetation change in arid areas may lead to the redistribution of regional water resources, which can intensify competition between ecosystems and humans for resources. This study aimed accurately model impact vegetation on hydrological processes an endorheic river watershed undergoing revegetation, namely, middle lower reaches Bayin River basin, China. A LU-SWAT-MODFLOW was developed by integr...