Low permeability zones (LPZs) are major sources of groundwater contamination after active remediation to remove pollutants in adjacent high (HPZs). Slow back diffusion from LPZs HPZs can extend management polluted sites by decades. Numerical models often used simulate diffusion, estimate cleanup times, and develop site strategies. Sharp concentration gradients present at the interface between L...

The standard formulation of a block-centered finite-difference model, such as MODFLOW, uses the center of the cell as the location of a cell node. Simulations of a dynamic water table can be improved if the node of a cell containing the water table is located at the water table rather than at the center of the cell. The LPF package of MOD-FLOW-2000 was changed to position a cell's node at the w...

Multiaquifer wells, i.e. wells that are open across more than one aquifer, can have a profound effect on the hydraulics of the groundwater system. They change the physical system by acting as very permeable tubes that establish direct hydraulic links between nonadjacent strata. The inclusion of a multiaquifer well in a numerical model of groundwater flow also changes the governing equations. Se...

Pemahaman komprehensif interaksi hidrologi–hidrogeologi dapat dilakukan dengan pendekatan pemodelan numerik. Salah satu perangkat coupled model hidrologi-hidrogeologi adalah SWAT-MODFLOW. Penelitian ini ditujukan untuk mengevaluasi kemampuan SWAT-MODFLOW dan memahami hidrologi hidrogeologi studi kasus wilayah Daerah Aliran Sungai Cisangkuy, Kabupaten Bandung. Hasil dari simulasi memperlihatkan ...

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, ...