groundwater flow modeling Articles
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A refined groundwater flow model of the shallow aquifer in Tianjin Municipality, China
The assembly of a groundwater flow model for the shallow aquifer in Tianjin Municipality is outlined in this paper. Tianjin Municipality was selected because of its complicated hydrogeological conditions and rich data, which could be used to test a refined groundwater flow model for the shallow aquifer. When a shallow groundwater flow model is being assembled its recharge and discharge ...
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Assessing selected natural and anthropogenic impacts on freshwater lens morphology on small barrier Islands: Dog Island and St. George Island, Florida, USA
The freshwater lens morphologies of the barrier islands Dog Island and St. George Island on the panhandle coast of Florida (FL), USA, are controlled to varying degrees by both natural and anthropogenic factors. Variable-density groundwater flow models confirm that spatial variability of recharge values can account for the observed lens asymmetry on these islands. The depth to the base of the lens ...
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The combined use of MODFLOW and precipitation-runoff modeling to simulate groundwater flow in a diffuse-pollution prone watershed
A numerical modeling case study of groundwater flow in a diffuse pollution prone area is presented. The study area is located within the metropolitan borders of the city of Izmir, Turkey. This groundwater flow model was unconventional in the application since the groundwater recharge parameter in the model was estimated using a lumped, transient water-budget based precipitation-runoff model that ...
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Study of groundwater using visual MODFLOW in the Manas River Basin, China
For effective groundwater management of a basin, it is essential that a careful water balance study be carried out. A three-dimensional transient-state finite difference groundwater flow model is used to quantify the groundwater fluxes and analyze the dynamic changes of groundwater level. After monitoring groundwater levels for 43 typical observation wells through a simulation study of the ...
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Impact of pumping in open pit mining on groundwater flow: a case study
The groundwater flow behaviour was analysed during pre-monsoon, monsoon, and post-monsoon seasons. At first, the groundwater model was analysed in the steady state, and then the same was applied in the transient state to predict the spatio-temporal behaviour of groundwater in the region. Transient flow model was also developed to estimate the potential impact of pumping of groundwater due to ...
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Modelling present and future Po river interactions with alluvial aquifers (Low Po River Plain, Italy)
A modelling study on a multi-layered confined/unconfined alluvial aquifer system was performed to quantify surface water/groundwater interactions. The calibrated groundwater flow model was used to forecast climate change impacts by implementing the results of a downscaled A1B model ensemble for the Po river valley. The modelled area is located in the north-western portion of the Ferrara ...
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A Calibrated Predictive Geochemical Model of Leaching and Attenuation Reactions in a Mine Pit Lake
Abstract: A geochemical model was developed to predict future water quality of the Cove pit lake in support of site closure and regulatory permitting. The terminal, groundwater-fed Cove pit lake began filling in 2001, and water-quality samples from the 15-year filling period were used to calibrate the pit-lake model and evaluate the accuracy of the predictions. Inputs to the pit-lake model ...
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Project - Tier 1 Water Budget Model for the Conservation Halton Area
Client: Halton Region, 1151 Bronte Road, Oakville, Ontario, Canada, L6M 3L1 Sudhakar Kurli, P.Geo., Source Protection Coordinator Client: Key Personnel: E.J. Wexler, D. Kassenaar, A. Kodippili, J. Ford. Earthfx completed multiple modelling assessments for Halton Region beginning with the development of models for the Milton area, which were used in the Halton Aquifer Management Plan (Holysh, ...
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Project - Database and Groundwater Model Analysis of the Oak Ridges Moraine, Ontario
Project Description: Land development in the Greater Toronto Area (GTA) is encroaching on the high recharge areas of the Oak Ridges Moraine (ORM). The ORM provides drinking water for over 2 million residents and headwater streamflow for all the major rivers in the GTA. As part of provincial efforts to protect the moraine, Earthfx was hired to develop a database, regional scale groundwater flow ...
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Project - Wellhead Protection Area Delineation and Vulnerability Scoring for the Brantford Airport Wellfield
Client: Grand River Conservation Authority (GRCA): 400 Clyde, Cambridge, ON Contact: Sonja Strynatka, P.Geo, Senior Hydrogeologist Key Personnel: Michael Takeda, Spencer Malott, E.J. Wexler The Brantford Airport wellfield, located 6 kilometers west of the Brantford town centre, services a small population of residential and industrial water users. A single well (Airport Well 1) ...
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Development of a coupled flow and solute transport modelling for Astaneh–Kouchesfahan groundwater resources, North of Iran
Astaneh–Kouchesfahan Plain is an important source of groundwater in Northern Iran. In the study area, rational management of groundwater resources requires a precise evaluation of groundwater flow and transport components. For this purpose, a 2–dimentional groundwater flow and solute transport model was developed and calibrated using PMWIN 5.3. Simulation results under ...
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Project - Simulation of Groundwater Flow in the vicinity of the proposed Reeb Quarry, Town of Wainfleet, Ontario
Client: David Ketcheson, Azimuth Environmental Consulting, 85 Bayfield Street, Suite 400, Barrie Ontario L4M 3A7 tel: (705) 721-8451 Key Personnel: E.J. Wexler, D. Kassenaar A groundwater flow model was developed for the proposed Reeb Quarry and surrounding area. The property is located south of the Wainfleet Bog and west of the City of Port Colborne. An active quarry and a rehabilitated quarry ...
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Sustainable management of a coupled groundwater–agriculture hydrosystem using multi-criteria simulation based optimisation
In this paper we present a new simulation-based integrated water management tool for sustainable water resources management in arid coastal environments. This tool delivers optimised groundwater withdrawal scenarios considering saltwater intrusion as a result of agricultural and municipal water abstraction. It also yields a substantially improved water use efficiency of irrigated agriculture. ...
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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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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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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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Project - Southeast Collector Sewer Environmental Assessments
Client: Tom Guoth, GHD Ltd. (formerly Conestoga-Rovers & Associates) Ultimate Client: Regional Municipality of York Key Personnel: D. Kassenaar, E.J. Wexler, J. Ford, M. Takeda Earthfx developed a 3-dimensional groundwater flow model to analyze the impacts of construction dewatering for the Southeast Collector (SEC) Trunk Sewer on groundwater and stream baseflow. The work was done in support ...
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Simulation of aquifer-peatland-river interactions under climate change
Wetlands play an important role in preventing extreme low flows in rivers and groundwater level drawdowns during drought periods. This hydrological function could become increasingly important under a warmer climate. Links between peatlands, aquifers, and rivers remain inadequately understood. The objective of this study was to evaluate the hydrologic functions of the Lanoraie peatland complex ...
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Simulation of Three-Dimensional Pore-Pressure Distribution for Slope-Stability Analysis
Abstract: A 3D groundwater flow model was constructed using MINEDW [1] to simulate pore pressure at the Chuquicamata open pit mine slope in Chile. Three main factors required the implementation of a 3D model for the prediction of pore pressures: (1) discrete zones of recharge in the gravel zone lead to the non-uniform flow field; (2) the low-permeability west fault and shear zones maintain the ...
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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 ...
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