Basics of Groundwater Flow Modelling Using MODFLOW

Categories: Geotechnical
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About Course

Groundwater flow modelling using MODFLOW is a process used to simulate the flow of groundwater in an aquifer. The model uses inputs such as aquifer properties, well locations, and recharge rates to calculate groundwater levels, drawdown, and flow paths. This information is then used to make management decisions on water supply, aquifer remediation, or other water management strategies.

Master groundwater flow modelling from the ground up using the MODFLOW code and GMS software. You will learn the fundamentals of groundwater in general and groundwater modelling in particular during this course.

During our  course we will discuss interesting topics as follow:

  • Basics of groundwater
  • Theoretical background of groundwater flow
  • Aquifer types
  • Groundwater flow equation
  • Concept and steps of groundwater modelling
  • Creating Models using grid approach

Also, during our course we will use and practice on many software like:

  • Groundwater Modeling System (GMS): for groundwater flow modeling simulation
  • ArcGIS: for building the model conceptually, extract shape files and extract raster
  • Excel: to solve finite difference manually, to read spreadsheets and extract CSV files
  • Global Mapper: for extracting Digital Elevation Models (DEM), rectify images and convert projection

By the end, you will not only be able to create groundwater models by following the steps in this course, but you will also be able to understand the concept of groundwater modelling and how the MODFLOW code uses finite difference to solve the groundwater flow equation, as well as how to judge whether your model is correct or not and how to find and fix problems on your own.

 

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What Will You Learn?

  • Basics and Theoretical Background of Groundwater
  • Aquifer Types
  • Groundwater Flow Equation
  • Concept and Steps of Groundwater Modelling Using GMS Software
  • Finite Difference Method to Solve Groundwater Flow Equation
  • Introduction to GMS software
  • Grid Approach in GMS

Course Content

1. Introduction
MODFLOW is a numerical groundwater flow model that simulates flow and transport of water in underground aquifers. It is used to simulate groundwater flow and transport of dissolved substances.

2. Groundwater Aquifers
Groundwater aquifers are underground layers of water-bearing permeable rock, such as sand, gravel, or fractured bedrock. Aquifers are filled with water from precipitation, springs, and surface runoff, and can be used as a source of freshwater for drinking, irrigation, and industrial purposes. As aquifer water is withdrawn, it is important to monitor and manage the use of this resource to ensure its sustainability.

3. Groundwater Flow Equation
The groundwater flow equation is an equation used to calculate the movement of groundwater in an aquifer. It states that the rate of groundwater flow is equal to the difference between the hydraulic head and the hydraulic gradient, divided by the aquifer's permeability.

4. Groundwater Modelling
Groundwater modelling is a process of simulating the flow of groundwater through aquifers and aquitards. It is used to understand how changes in the environment, such as land use, climate, and pumping of water from wells, can affect the groundwater system. The model is used to predict the response of the system to different scenarios and to help inform the decision-making process for the management of groundwater resources. Groundwater models can be used for a range of applications, including the evaluation of water resources, the assessment of aquifer vulnerability to contamination, and the design of remediation strategies.

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