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Steady-State Unconfined Aquifer Simulation of the Gareh-Bygone Plain, Iran

Hossein Hashemi
2012 Open Hydrology Journal  
Estimated hydraulic conductivity, K's, and related confidence interval for four sub-zones (Z1, Z2, Z3, and Z4) of GBA for the ten different steady-state periods. Fig. (10) .  ...  Also, the steady-state groundwater model can be a part of unsteadystate modeling provided that estimated parameters are transferred to the unsteady simulation.  ... 
doi:10.2174/1874378101206010058 fatcat:pznpi5hk2ffe5lpfikgft4kn3q

Optimum experimental design of a monitoring network for parameter identification at riverbank well fields

Ping Wang, Sergey P. Pozdniakov, Vsevolod M. Shestakov
2015 Journal of Hydrology  
Under the assumption of steady-state flow, an analytical approach for determining the key hydraulic parameters (aquifer transmissivity and riverbed filtration resistance) between a stream and a hydraulically  ...  near the Kuybyshev Reservoir, Russia, was designed to minimise the uncertainty in the estimates of hydraulic parameters.  ...  Acknowledgements This research was partially supported by grants from the National Natural Science Foundation of China (No. 41301025  ... 
doi:10.1016/j.jhydrol.2015.02.004 fatcat:2ox2kcs3jbc7dbuxgzhessnzku

An Integrated Approach for Studying the Hydrology of the Ljubljansko Polje Aquifer in Slovenia and Its Simulation

Vrzel, Ludwig, Vižintin, Ogrinc
2019 Water  
The results were then used as boundary conditions imposed on a transient state groundwater flow model performed in finite element subsurface flow simulation system (FEFLOW 6.2).  ...  Since boundary conditions are essential for simulating groundwater flow in a sensitive aquifer, a modelling system of rivers and channels (MIKE 11) and water flow and balance simulation model (WaSiM) were  ...  The funders had no role in the design of the study, in the collection, analyses, or interpretation of the data, in the writing of the manuscript, or in the decision to publish the results.  ... 
doi:10.3390/w11091753 fatcat:3wgzwip52bdvbhkqhtg2s5qh3e

Modelling groundwater flow and advective contaminant transport in the Bou-Areg unconfined aquifer (NE Morocco)

F. El Yaouti, A. El Mandour, D. Khattach, O. Kaufmann
2008 Journal of Hydro-environment Research  
A three-dimensional finite-difference groundwater flow model was implemented to investigate the variety of hydrogeological conditions and to simulate the behavior of the flow system under different stresses  ...  The two-layer model was calibrated with two steps: a steady state calibration, using observed groundwater levels from 1990, and a transient calibration and verification, using observed groundwater levels  ...  Also, we thank the Agency of Moulouya Hydraulic basin of Oujda for their data contribution.  ... 
doi:10.1016/j.jher.2008.08.003 fatcat:tqibm3cunra6lhll7eipenaadu

Mathematical Modeling of Bara Groundwater System Central Sudan

K.M. Kheiralla
2012 Journal of Ecosystem & Ecography  
the aquifers, water released from storage in the main aquifer due to heavy pumping), in addition to the prediction of the reactions of the hydraulic system due to groundwater withdrawal, and final determination  ...  Groundwater has proved to be a major resource in Northern Kordofan State (NKS) in the development plans of water supply, irrigation as well as industrial sectors.  ...  The safe yield of the lower confined aquifer is linked to a dynamic water level on top of this aquifer i.e. less than 181m, and can be estimated from the presented model results.  ... 
doi:10.4172/2157-7625.1000120 fatcat:ajk3ztutwnefxiwhgdhzuvihyy

Numerical groundwater flow modeling of Kohat basin : An example from Himalayan fold and thrust belt Pakistan

2021 Mausam  
The hydraulic heads of the observation wells were used as initial conditions for steady state simulation; the model successfully generated heads calibrated with 95% confidence interval with correlation  ...  The output is focused to predict the groundwater breed zone resulted in groundwater flow pattern, which closely resembled the natural flow.  ...  Disclaimer : The contents and views expressed in this research paper/article are the views of the authors and do not necessarily reflect the views of the organizations they belong to.  ... 
doi:10.54302/mausam.v69i2.305 fatcat:w4hny754fff5ray7mqjt2aks5i

Assessment of the potentiometric drawdown in the Guarani Aquifer System in Bauru/SP by a model of analytical elements

Vinicius Ferreira Boico, Edson Wendland, José Anderson do Nascimento Batista
2018 Revista Brasileira de Recursos Hídricos  
The Analytic Element Method was used for groundwater flow modeling at steady-state, which includes the regional flow, the water withdrawal from wells and the main local geological conditions.  ...  The hydraulic gradient 0.82 m/km was estimated in the GAS in Bauru City. The potentiometric drawdown in the GAS in Bauru was estimated as 50 m since the beginning of the groundwater exploitation.  ...  The groundwater flow was modified and directed to the city center. The drawdown at steady-state flow after the groundwater exploitation of GAS in 1988 and 2014 reached 20 and 50 m, respectively.  ... 
doi:10.1590/2318-0331.0318170121 fatcat:3stzpb3s75cjddy7klcm2ykkia

Ground water flow modeling for calibrating steady state using MODFLOW software: a case study of Mahesh River basin, India

S. F. R. Khadri, Chaitanya Pande
2016 Modeling Earth Systems and Environment  
Groundwater flow models are used to calculate the rate and direction of movement of groundwater through aquifers.  ...  A groundwater model is thus a simplified version of the real system that approximately simulates the input-output stresses and response relations of the system.  ...  The calibration of the model parameters was conducted under steady-state flow and Transient state conditions.  ... 
doi:10.1007/s40808-015-0049-7 fatcat:bbj4lfkitfahnjzbyvcnkagsia

Reducing Uncertainty in Calibrating Aquifer Flow Model with Multiple Scales of Heterogeneity

Ye Zhang
2013 Ground Water  
Due to uncertainties such as a lack of understanding of subsurface processes and a lack of techniques to parameterize the subsurface environment (including hydraulic conductivity, source/sink rate, and  ...  Introduction While computer modeling plays an essential role in hydrogeology, due to uncertainties in describing aquifer parameters, flow and transport processes, and the associated initial and boundary  ...  The author also acknowledges the support from the Center of Fundamental of Subsurface Flow, the School of Energy Resources at the University of Wyoming, NSF CI-WATER (Cyberinfrastructure to Advance High  ... 
doi:10.1111/gwat.12111 pmid:24749908 fatcat:4u5kdfkltzb2zbdyz7vjdahsva

Natural vs. artificial groundwater recharge, quantification through inverse modeling

H. Hashemi, R. Berndtsson, M. Kompani-Zare, M. Persson
2013 Hydrology and Earth System Sciences  
The study used the MODFLOW-2000 to estimate recharge for both steady- and unsteady-state conditions.  ...  </strong> Estimating the change in groundwater recharge from an introduced artificial recharge system is important in order to evaluate future water availability.  ...  The authors are also grateful to Eric Hooglund for review of the manuscript. Edited by: T. P. A. Ferre  ... 
doi:10.5194/hess-17-637-2013 fatcat:pbwbzdx63jgl5pifdhogbkix7m

Natural vs. artificial groundwater recharge, quantification through inverse modeling

H. Hashemi, R. Berndtsson, M. Kompani-Zare, M. Persson
2012 Hydrology and Earth System Sciences Discussions  
The study used the MODFLOW-2000 to estimate recharge for both steady-and unsteady-state conditions.  ...  Estimating the change in groundwater recharge from an introduced artificial recharge system is important in order to evaluate future water availability.  ...  The authors are also grateful to Eric Hooglund for review of the manuscript. Edited by: T. P. A. Ferre  ... 
doi:10.5194/hessd-9-9767-2012 fatcat:kp3r4yu5pbagboiqyw5a6q7yie

Can we simulate regional groundwater flow in a karst system using equivalent porous media models? Case study, Barton Springs Edwards aquifer, USA

Bridget R Scanlon, Robert E Mace, Michael E Barrett, Brian Smith
2003 Journal of Hydrology  
The MODFLOW code was used for the distributed parameter model. Estimation of hydraulic conductivity distribution was optimized by using a combination of trial and error and automated inverse methods.  ...  The purpose of this study was to evaluate two different equivalent porous media approaches: lumped and distributed parameter, for simulating regional groundwater flow in a karst aquifer and to evaluate  ...  Geological Survey), Steve Worthington (Worthington Groundwater, Canada), and Martin Sauter (University of Tubingen, Germany).  ... 
doi:10.1016/s0022-1694(03)00064-7 fatcat:oivwu6mv4fcnveeecidtm7wgdm

Numerical understanding of regional scale water table behavior in the Guadalupe Valley aquifer, Baja California, Mexico

J. R. Campos-Gaytan, T. Kretzschmar
2006 Hydrology and Earth System Sciences Discussions  
A steady-state calibration model was carried out in order to obtain the best possible match to measured levels at the Guadalupe Valley Aquifer.  ...  The State of Baja California has been subject to an increment of the agricultural, urban and industrials activities, implicating a growing water-demand.  ...  The RMSE relation of the steady-state calibration results is 5.48 m for January 1983.  ... 
doi:10.5194/hessd-3-707-2006 fatcat:u4prkb7rfvatzivex6yfsa5eju

Glacial Melt in the Canadian Rockies and Potential Effects on Groundwater in the Plains Region

Alfonso Rivera, Angus I. Calderhead
2022 Water  
A growing concern relates to the significant glacier melt estimated from glacier mass balances, which indicate that glaciers and ice fields have experienced considerable mass losses over the last 15 years  ...  The contribution of glacier water in the eastern part of the Rockies is time-dependent with delayed groundwater flows of 1000s of years in the Front ranges, 1000s to 100,000s of years in the foothills  ...  Acknowledgments: The authors would like to acknowledge continued support of the Groundwater Geoscience program of the Geological Survey of Canada (National Aquifer and Groundwater Accounting Project),  ... 
doi:10.3390/w14050733 fatcat:cjpcvcpxrvhvtlhl4rz3mr7xny

A Steady-State Model to Simulate Groundwater Flow in Unconfined Aquifer

Mauro Pagnozzi, Gianluca Coletta, Guido Leone, Vittorio Catani, Libera Esposito, Francesco Fiorillo
2020 Applied Sciences  
In particular, groundwater flow simulations were performed for a multilayered, unconfined aquifer in steady-state conditions for different thicknesses of the aquifer's saturated zone.  ...  The hydraulic and hydrogeological features of the Caposele aquifer have been investigated by using a numerical groundwater flow model.  ...  Acknowledgments: Authors are grateful to four anonymous reviewers for their helpful advice.  ... 
doi:10.3390/app10082708 fatcat:5ue652m5ufhdpik7w4spw7cyba
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