MODFLOW Articles
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Study of the 2–D copper transport in sandy soil by laboratory scale aquifer model (sand tank) experiment
In this study, a laboratory scale aquifer model (sand tank) experiment has been carried out to simulate the 2–D transport pattern of copper into the sandy soil. The data collected from the experiment was used for verification of this physical transport experiment by using a flow and transport simulation software (MODFOLW). In case of simulation of laboratory scale aquifer model experiment ...
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The application of groundwater modelling to simulate the behaviour of groundwater resources in the Ramhormooz Aquifer, Iran
In this study, groundwater modelling was proposed as management tool in Ramhormooz Plain, south western Iran. After definition of a conceptual model, the necessary data were defined into various packages of MODFLOW. Subsequently, the model was calibrated by trial and error estimation and the results were finally optimised by PMWIN through PEST code. After verification process, the model was used ...
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Swarm intelligence for groundwater management optimization
This paper presents some simulation–optimization models for groundwater resources management. These models couple two of the most successful global optimization techniques inspired by swarm intelligence, namely particle swarm optimization (PSO) and ant colony optimization (ACO), with one of the most commonly used groundwater flow simulation code, MODFLOW. The coupled simulation–optimization ...
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Evaluating the impact of grid cell properties in spatial discretization of groundwater model for a tropical karst catchment in Rote Island, Indonesia
To assess the effect of three grid cell properties (size, mean slope of the surface and distance between centre of grid and observation well) on groundwater models' performances, a tropical karst catchment characterized by monsoonal season in Rote Island, Indonesia was selected. Here, MODFLOW was used to develop models with five different spatial discretization schemes: 10 × 10 m, 20 × 20 m, ...
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Groundwater discharge downstream of an arid inland river in Northwestern China
Nalenggele River is an inland river located in the arid, fragile ecological environment area in Northwestern China. Groundwater discharge to the river can significantly impact the ecologic environment in the Nalenggele River basin, but few hydrogeological studies have been conducted in the inland arid basin. In this paper, two sections were chosen to analyze the groundwater discharge in the ...
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Modelling of coastal hydrogeology of Krishna delta in India
Numerical techniques are widely used for modelling groundwater aquifers. Hydrological models are generally concept based and highly non-linear due to complex parameterisation as compared to models of other disciplines. Calibration and validation of such models cannot follow conventional methods borrowed from other disciplines many times due to scale of the model domain. In the present paper, ...
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Study the impact of land use and over pumping on nitrate concentration in groundwater by using modelling approach
Gaza Strip, a heavily populated area, is a narrow coastal strip on the Mediterranean Sea (360 km 2 ). Groundwater is the only source of drinking water for the majority of the population. However, many human activities greatly threaten the groundwater resources and nitrate was and still is a major groundwater pollutant. Khanyounis, one of the southern governorates of Gaza Strip, is suffering ...
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Sustainability of societal water management practices
For sustainable water management in water scarce areas available quantity of water is consumptively used and saved water is conjunctively supplied in addition to insufficient quantity available in water deficit months. Such storages are generated season wise and selecting suitable technique of aquifer storage as against preservation in a surface water body is a vital issue. Conjunctive planning ...
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Micro level groundwater flow and transport model to predict future spread of pollution for Ambur sub–basin, Tamil Nadu, India
Realistic groundwater flow and transport models have greater use in understanding, predicting and managing groundwater systems in water–scarce and polluted areas. In this study, micro–level flow and transport models were developed, using the Visual MODFLOW software, for the highly polluted Ambur sub–basin, Tamil Nadu for the purpose of predicting pollution migration in the next 50 years and ...
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Modelling the interaction of surface and subsurface water flow by linking TOPMODEL and MODFLOW
A coupled ground water–surface water model was used to quantify the hydrological processes in a lowland watershed. The model was constructed by coupling TOPMODEL and MODFLOW without writing new code for the integrated model. Meteorological, land use and soil type data for the Tenmile watershed, USA, were used to run TOPMODEL, which partitions precipitation into evapotranspiration, runoff and ...
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Groundwater flow modeling to support water management scenarios – the Bekaa Valley, Lebanon
The Italian Ministry of Foreign Affairs funded a project aimed at developing tools for water management in the Bekaa valley, Lebanon. The Lebanese Ministry of Energy and Water implemented the project, supported by the University of Milan Department of Agricultural and Environmental Sciences (DISAA). The geologic framework consists of a cretacean-eocean carbonatic structure, crossed by a fracture ...
By Tethys srl
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Multi-objective optimization for sustainable groundwater management by developing of coupled quantity-quality simulation-optimization model
This study addresses the issue of optimal management of aquifers using a mathematical simulation- optimization model which relies on the stability of water quality and quantity, considering salinity. In this research first we developed a hydrological model (SWAT) to estimate recharge rates and its spatiotemporal distribution. Then, groundwater simulation of the basin was simulated and ...
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Groundwater flow and transport model of the Estonian Artesian Basin and its hydrological developments
The sophisticated research and management problems of the Estonian water environment are considered by means of holistic modelling. The model elaborated is based on the computer code Visual MODFLOW Classic. The model encompasses the entire Estonian Artesian Basin (EAB) and the border districts of Russia and Latvia. It involves all main aquifers and aquitards on an area of 88,000 km2. The main ...
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Sustainable groundwater modeling using single- and multi-objective optimization algorithms
This study presents the first attempt to link the multi-algorithm genetically adaptive search method (AMALGAM) with a groundwater model to define pumping rates within a well distributed set of Pareto solutions. The pumping rates along with three minimization objectives, i.e. minimizing shortage affected by the failure to supply, modified shortage index and minimization of extent of drawdown ...
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Use of a Finite Element Code to Model Complex Mine Water Problems
Abstract: Numerical models are now used routinely to predict ground-water inflows to both surface and underground mines and to help design dewatering systems. Two of the more complex problems encountered in mine dewatering are 1) predicting the configuration of the phreatic surface and height of the seepage face in pit highwalls for slope stability analysis and 2) predicting inflow to ...
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Evaluation of the potential impact of Grand Ethiopian Renaissance Dam and pumping scenarios on groundwater level in the Nile Delta aquifer
The main objective of this study is to evaluate the potential impact of Grand Ethiopian Renaissance Dam (GERD) and pumping scenarios on groundwater level by a three-dimensional groundwater model of the Nile Delta using MODFLOW software. The Nile Delta has highly intensive irrigation canal networks that share yearly about 35.5 km3 of water. In this study, an integrated three-dimensional ...
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The nexus between groundwater modeling, pit lake chemogenesis and ecological risk from arsenic in the Getchell Main Pit, Nevada, U.S.A.
Abstract: The proliferation of mine pits that intersect the groundwater table has engendered interest in environmental consequences of the lakes that form after cessation of dewatering. The Getchell Main Pit (GMP) in Nevada hosts arsenic sulfide (AsxSy) mineralization (e.g., orpiment and realar) and ambient groundwater As up to 1.8 mg L-1 , making groundwater inflow a potentially significant As ...
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Data Management and Visualization for Interim Measure Plan - Case Study
Challenge Groundwater impact was discovered at the bedrock surface off-site and the client needed to quickly be able to access a long history of site data and develop a conceptual site model. Visually understanding where the impacted groundwater was in relation to property boundaries, surface water and stratigraphic features was critical for the client to determine next steps. Solution A team ...
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Project - WHPA Vulnerability Analysis for the Region of Peel Wellfields, Ontario
Client: Region of Peel Infrastructure Planning, Engineering and Construction Group A. Korniluk, M.Sc., P.Geo. Project Manager Hydrogeologist 10 Peel Centre Drive, Brampton, ON L6T 4B9 Project Description: Earthfx was hired by the Region of Peel to develop wellhead protection areas and contaminant vulnerability assessments for the Caledon East and Palgrave communities. Project work began with the ...
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Research on the process-based risk evaluation method of groundwater pollution for contaminated site
A universal method to evaluate groundwater pollution risk with the site scale has not been established. The groundwater pollution risk is commonly evaluated by overlaying the results of groundwater vulnerability and pollution sources, but this method is inapplicable for contaminated sites. Considering the current supervision demands of groundwater pollution in China, this paper suggests a ...
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