Saltwater intrusion (SWI) is a type of pollution that adversely affects the quality groundwater in coastal aquifers. The Nile Delta aquifer (NDA) Egypt contains large amount freshwater. Increasing abstraction from and sea level rise have led to an increase SWI, which has reached up 100 km inland. Therefore, practical measures are required prevent further SWI. This study aims identify optimal we...

This study presents an integrated modeling system for the evaluation of quantity and quality water resources coastal agricultural watersheds. The consists coupled interrelated models, including (i) a surface hydrology model (UTHBAL), (ii) groundwater (MODFLOW), (iii) crop growth/nitrate leaching (REPIC, R-ArcGIS-based EPIC model), (iv) contaminant transport (MT3DMS), (v) seawater intrusion (SEA...

Fresh groundwater reserves, being of vital importance for more than a billion people living in the coastal zone, are threatened by saltwater intrusion due to anthropogenic activities and climate change. High resolution three-dimensional (3D), variable-density (VD), flow salt transport (FT) numerical models increasingly used support water managers decision makers their strategic planning measure...

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...

Abstract Coastal fresh groundwater management is a challenging research topic due to the relevance of these resources and huge suffered risks global change overpopulation. The geometrical features coastal aquifers play control role in saltwater intrusion (SWI). Seawater level rise reduction aquifer storage are promoting SWI. All key factors considered with two different numerical approaches def...

[1] Sea level rise and reduction of groundwater fluxes due to changes in rainfall patterns are the two major climate change–induced hydrological variables that can severely affect saltwater intrusion in coastal aquifers. In this study we use a combination of laboratory experiments and numerical simulations to study the impacts of changes in one of these climate change–induced hydrological varia...

The SWIFT2D surface-water flow and transport code, which solves the St Venant equations in two dimensions, was coupled with the SEAWAT variable-density ground-water code to represent hydrologic processes in coastal wetlands and adjacent estuaries. A sequentially coupled time-lagged approach was implemented, based on a variable-density form of Darcy’s Law, to couple the surface and subsurface sy...

0309-1708/$ see front matter 2011 Elsevier Ltd. A doi:10.1016/j.advwatres.2011.06.006 ⇑ Corresponding author. Tel.: +1 334 844 6268; fax E-mail address: [email protected] (T.P. Clemen Climate change effects are expected to substantially raise the average sea level. It is widely assumed that this raise will have a severe adverse impact on saltwater intrusion processes in coastal aquifers. In th...

Sea levels are expected to rise as a result of global temperature increases, one implication of which is the potential exacerbation of sea water intrusion into coastal aquifers. Given that approximately 70% of the world's population resides in coastal regions, it is imperative to understand the interaction between fresh groundwater and sea water intrusion in order to best manage available resou...

Laboratory and numerical experiments were conducted to provide a quantitative steady-state analysis of the effect incremental variations water level on saltwater intrusion. The purpose was seek mathematical correlations relating both wedge toe length height along coastline boundary head difference. laboratory completed in 2D sand tank where freshwater seawater levels varied. for two bead sizes ...