The Juksan weir, installed in the Yeongsan river South Korea from 2010 to 2012, has secured sustainable water resources and helped control flooding. However, low flow velocities due weir have deteriorated quality of water. For natural restoration, gate was opened 2017. In this study, three-dimensional finite difference model Visual MODFLOW used analyze effects opening on stream–aquifer interact...

Purpose Groundwater plays a critical part in both natural and human existence. When surface water is scarce arid climates, groundwater becomes an immensely valuable resource. Dak Lak area that frequently lacks resources for everyday living production, the scarcity of exacerbated during dry season. As result, it to do study understand about meet region's demand. This aims extend use MODFLOW mode...

A detailed finite-difference approach is presented for the simulation of transient radial flow in multi-layer systems. The proposed discretization scheme simulates drawdown within the well more accurately than commonly applied schemes. The solution is compared to existing (semi) analytical models for the simulation of slug tests and pumping tests with constant discharge in singleand multi-layer...

Historical drainage improvements have created complex hydrological regimes in many low-lying, wet coastal grassland areas. The manipulation of ditch water levels is a common management technique to maintain important in-stream and in-field habitats in such areas. However, in wet grasslands with low soil conductivities the water table in the centre of each field is not closely coupled to variati...

The new, two-way coupled, distributed and transient MARMITES-MODFLOW (MM-MF) model, coupling land surface soil zone domains with groundwater, is presented. It implements model-based partitioning sourcing of subsurface evapotranspiration ( ET ss ) as part spatio-temporal water balance (WB). involves its separation into evaporation E transpiration T ), while the each two groundwater g components....

We present a new three-dimensional steady-state saturated groundwater-flow forward-simulator with full conductivity tensors using a nineteen-points block-centered finite-difference method. Hydraulic conductivity tensors are defined at the block interfaces eliminating the need to average conductivity tensors at adjacent blocks to approximate their values at the interfaces. The capabilities of th...