Majid Kholghi

University of Tehran | UT · Department of Irrigation and Reclamation Engineering

In recent decades, groundwater overexploitation has caused an important aquifer level decline in arid zones each year. In addition to this issue, large volumes of effluent are produced each year in metropolitan areas of these regions. In this situation, an aquifer storage and recovery system (ASR) using the reclaimed domestic wastewater can be a lo...

Groundwater quality management is based on understanding the spatial distribution of parameters in when assessing the suitability of groundwater for use. In this study, different interpolation methods were evaluated in two shallow aquifers according to their hydrogeological characteristics. After initial data processing, 24 deterministic and geosta...

Iran - Water Resources Research, volume 16, issue 3, Autumn 2020 Land Subsidence Assessment due to Groundwater Exploration by using Differential Radar Interferometry Technique, Case Study: Qazvin province Document Type: Original Article Authors Mahdieh Janbaz Fotamy 1 Majid Kholghi 2 Abdolnabi Abdeh Kolahchi 3 MahAsa Roostaei 4 1 PhD student, U...

Aquifer storage and recovery (ASR) with treated wastewater, is considered as an effective solution for a critical aquifer decline due to groundwater overexploitation. In ASR operational step and after the aquifer storage phase, the problem is the new groundwater right for stakeholders and specifically farmers. In a 2-year study, the potential of a...

مدیریت منابع آب زیرزمینی، نیازمند شناخت عملکرد آن و پیش بینی تاثیر عوامل مختلف اقلیمی و انسانی می باشد. در این تحقیق، به منظور شناخت و شبیه سازی ویژگی های آبخوان دشت مهاباد از مدل GMS10.05 استفاده شد. پس از واسنجی و صحت سنجی مدل، عوامل تاثیرگذار بر تراز آب زیرزمینی مورد بررسی قرار گرفت و به این منظور مدل با حذف کلیه عوامل انسانی تاثیرگذار اجرا شد ک...

Groundwater plays a significant role in domestic, agricultural, and industrial water supply in semi-arid regions. In such areas, rapid growth of population and water demand in conjunction with climate change negatively impacts groundwater quantity and quality. In this research, human activities and climate change effects on groundwater quality in a...

Nowadays multicriteria decision making (MCDM) methods are a useful tool for investigating natural resources and to address problems related to hydro systems. The goal of this research was to assess the Daliri Standardization Method (DSM) to prioritize and make selections for application to MCDM. And to compare the DSM method with the Utility Additi...

Nowadays multicriteria decision making (MCDM) methods are a useful tool for investigating natural resources and to address problems related to hydro systems. The goal of this research was to assess the Daliri Standardization Method (DSM) to prioritize and make selections for application to MCDM. And to compare the DSM method with the Utility Additi...

1 Background and Objectives: When the water supply system faces serious problems and crises, it is necessary to identify the root causes and the history of the problems, in order to provide an effective solution. Measures can be effective when they occur on time, otherwise they will have a high cost and less impact. In this paper, the history of sa...

Studying the rainfall-runoff response of the catchments has several important reasons in hydrology. The main reason is limitation of hydrologic parameters that can be measured in hydrological system. Therefore, the model that can estimate the transformation of rainfall to runoff with available range of measurements, particularly to limited gauged c...

Excessive exploitation of groundwater resources has created challenges in utilization management of most aquifers in Iran for the last two decades. Using decision support system (DSS) for sustainable development is an efficient tool in managing aquifers, since an aquifer as a complex system is not a structural issue due to the varied components. Th...

This work was presented at EGU General Assembly 2017 as a Poster

This paper presents management of groundwater resource using a Bayesian Decision Network (BDN). The Kord-kooy region in North East of Iran has been selected as study area. The region has been divided to three parts based on Transmissivity (T) and Electrical Conductivity (EC) values. The BDN parameters (prior probabilities and Conditional Probabilit...

This paper presents management of groundwater resource using a Bayesian Decision Network (BDN). The Kordkooy region in North East of Iran has been selected as study area. The region has been sub-divided into three zones based on transmissivity (T) and electrical conductivity (EC) values. The BDN parameters: prior probabilities and Conditional Proba...

Sandy dust storms in Iraq represented a serious problem for human health, not only in Iraq but also extended to be in other countries. Therefore, this study has assessed five heavy metals (Cd, Ni, Zn, Pb, and Fe) in the sandy dust storms from ten locations in the middle and south of Iraq. Contamination levels in the dust were evaluated by using var...

Measurements of major ions, trace elements, water-stable isotopes, and geophysical soundings were made to examine the interaction between Urmia Aquifer (UA) and Urmia Lake (UL), northwest Iran. The poor correlation between sampling depth and Cl− concentrations indicated that the position of freshwater-saltwater interface is not uniformly distribute...

Coastal aquifers are at threat of salinization in most parts of the world. This work investigated the seasonal hydrochemical evolution of coastal groundwater resources in Urmia plain, NW Iran. Two recently proposed methods have been used to comparison, recognize and understand the temporal and spatial evolution of saltwater intrusion in a coastal a...

Precipitation is one of the main components in water budget balance and its trend analysis could help to understand the hydrological features of a basin in the future. In this study, 10 subbasins in western Iran are selected. One rain gauge station is chosen as a control station and three more are selected upstream, in the middle, and downstream of...

This paper presents the results of an assessment about interaction between Urmia Lake (UL) and coastal groundwater in the Urmia aquifer (UA). This aquifer is the most significant contributor to the freshwater supply of the coastal areas. The use of hydrochemical facies can be very useful to identify the saltwater encroachment or freshening phases i...

Introduction: Groundwater level is strongly falling due to dependence of agricultural, industrial, and urban water on this resource. The increasing population growth, industrialization progress, and agriculture intensification have all resulted in ever-increasing water demand for various purposes. Artificial recharge and discharge optimum managemen...

Groundwater quantity and quality modeling is one approach for optimal use of available water resources in arid and semiarid regions. This study was conducted to simulate flow treatment and nitrate transport on Shahrekord aquifer using three-dimensional solute transport model and geographical information system. Hydraulic conductivity, specific yiel...

In arid and semi-arid regions of the world, sustainable social-economic development relies almost exclusively on the availability of good quality groundwater. Pro-active management of these resources is vital, and reliable assessments of aquifer vulnerability are an important component of the overall management plan. In southwest Iran, the universa...

The aim of this study is to simulate the transport of degraded nitrate by nano- Fe/Cu particles in the length of a packed sand column. A meta-modeling approach based on the adaptive neuro-fuzzy inference system (ANFIS) method and a finite volume modeling of the 1D advection–dispersion–reaction equation (ADRE) have been used for simulation of this s...

There are many fundamental problems with the injection of nano-zero-valent iron (NZVI) particles to create permeable reactive barrier (PRB) treatment zone. Among them the loss of medium porosity or pore blocking over time can be considered which leads to reduction of permeability and bypass of the flow and contaminant plume up-gradient of the PRB....

Wastewater planning management is a complex problem involving agricultural, rural and industrial interests. In countries facing rapid population growth, identifying methods that can allow them to take good decisions among several competitive alternatives is of utmost importance. The purpose of this paper is to present a methodology for a wastewa-te...

Ensemble techniques are used in regression/classification tasks with considerable success. Due to the flexible geometry of artificial neural networks (ANNs), they have been recognized as suitable models for ensemble techniques. The application of an ensemble technique is divided into two steps. The first step is to create individual ensemble member...

In this work the application of a modified surface nano zero valent iron (NZVI) as bimetallic Fe/Cu particles to remove high concentration of NO3 −-N through packed sand column has been studied. Dispersed nano-Fe/Cu particles has been synthesized in water mixed ethanol solvent system (1:4 v/v) and described by XRD pattern, TEM and SEM images and BE...

Groundwater balance needs the estimation of hydrodynamic coefficients. Numerical groundwater modeling is an important tool in the practice of groundwater engineering. PMWIN 5.3 model using the finite difference numerical method is an applied tool to solve differential equations in the porous media flow. In this study, Shahrekord aquifer modeling is...

Flow and mass transport parameter estimation was done by creating an inverse model of a seawater intrusion system using a genetic algorithm (GA) method as the optimization procedure. Firstly, the SEAWAT code was used for the forward solution part and then a program was written in MATLAB for coupling the forward and inverse processes. The auto-calib...

The nitrate value is one of the most important pollutants in some urban and rural aquifers in Iran due to agricultural, urban and industrial activities. For any modelling and management purpose an estimation of spatial variability of this pollutant is required. Karaj aquifer is situated in 40 kilometres of West of Iranian capital, Tehran. An invest...

One of the most salty lakes in Iran is located in North-East of Fars province with Electrical Conductivities (EC) of up to 61420 mumhos/cm where water supply depends severely on groundwater resources. Increasing demand for freshwater and overexploitation of the aquifer has caused a drawdown in groundwater levels followed by a seawater intrusion int...

Groundwater protection is a major challenge in arid and semi-arid region because it is the main source of water in these areas. In addition to water quantity, the water quality is getting worth due to wastewater discharges, increasing salinity and overdraft usage. Therefore, it is necessary to use a proper method to prevent these resources from bei...

Hydrological forecasting is one the most important issues in water resources systems which helps in dealing with the real time operation, flood and drought warning, and irrigation scheduling. Recent studies have suggested that the use of data fusion approach instead of using a single forecast approach may improve the hydrological forecast skill. Th...

The forecasting of hydrological variables, such as streamflow, plays an important role in water resource planning and management. Recently, the development of stochastic models is regarded as a major step for this purpose. Streamflow forecasting using the ARIMA model can be conducted when unknown parameters are estimated correctly because parameter...

In this study, various methods have been studied to determine the quality boundaries of groundwater. Since the main problem in this subject is not lack of proper laws and regulations, it is need to determine groundwater quality standards in order to respect the groundwater protection boundaries. In this regards, it is necessary to specify at least...

A linear programming model is developed for annual cultivation rules of multi-crop irrigation areas in a reservoir-irrigation system. The objective is to maximize the annual benefit of the system by assigning annual irrigation areas as well as monthly irrigation schedules over the planning horizon. The annual irrigation areas are considered to be a...

Overtopping is one of the main factors responsible for dam failure. To avoid overtopping, dam is equipped with one or some spillways to release the water impounded in the reservoir. The number and size of these spillways are determined on the basis of design flood. Determination of design flood of dam spillway can be formulated as a multiobjective...

Water level in aquifer plays the main role in groundwater modeling as one of the input data. In practice, due to aspects of time and cost, data monitoring of water levels is conducted at a limited number of sites, and interpolation technique such as kriging is widely used for estimation of this variable in unsampled sites. In this study, the effici...

In this stduy, a new framework which integrates the Geographic Information System (GIS) with the Watershed Modeling System (WMS) for flood modeling is developed. It also interconnects the terrain models and the GIS software, with commercial standard hydrological and hydraulic models, including HEC-1, HEC-RAS, etc. The Dez River Basin (about 16213 k...

In interpolation of groundwater properties such as transmissivity, due to the unknown distributed values of the variables and heterogenity, the best and the unbiased aspects are frequently difficult to obtain. Therefore, applying a modern technique is necessary to obtain a real estimation of transmissivity. To gain the transmissivity values as an i...

A new governing equation was proposed for the spatially varied flows with increasing discharge, which affects the position and the depth of the control section as well as the entire water surface profile within the channel. This paper presents the use of the Newton-Raphson method in the solution process. The results of the computational model were...

: Iran is facing a severe drought periods in which water supply availability is limited. In such case, optimization techniques can determine the optimum allocation of ground- water. The selected region is the Bistoon plain. This is an alluvial aquifer in Western Iran with 200 square kilometers area. Irrigated agriculture is extensively practiced in...

The main goal of this paper is to propose a new practical method for hydrologic soil group estimation in surface runoff process based on geomorphology facieses and slop. The determination of CN based on this method can reduce the time and cost of project. In this research the upstream rivers of Glinak Watershed have been used as a case study to exa...