February 13, 2025

Regional groundwater flow modeling with Voronoi mesh on MODFLOW6 DISV and Flopy - Tutorial

February 13, 2025/ Saul Montoya

This example develops a groundwater model in MODFLOW6 DISV that implements a Voronoi mesh generated from the basin boundary and river network with the mf6Voronoi packages that allow high performance meshing fully coupled with geospatial data. On the Voronoi mesh, the refinement levels are defined by a minimum cell size, maximum cell size and a multiplier. The applied case covers all steps on model discretization, construction, simulation and 2D visualization.

February 05, 2025

Groundwater modeling figures and related topics

February 05, 2025/ Saul Montoya

Groundwater modeling figures and related topics

February 04, 2025

Basic example of groundwater modeling with MODFLOW6 and Flopy in Google Colab - Tutorial

February 04, 2025/ Saul Montoya

Basic example of MODFLOW 6 groundwater flow modeling with Flopy. The model is multilayered and runs on transient conditions with the recharge, well and river boundary conditions implemented. The example also load model results and create head distributions with flow direction plots with Matplotlib.

The example runs entirely on the Google Colab platform with the use of a Github repository with the MODFLOW 6 executables. This workflow is intended to give a complete online experience of groundwater modeling without any particular computer/software requirement.

January 29, 2025

Modeling Lithium brine pumping impact with Modflow 6 and Model Muse - Tutorial

January 29, 2025/ Saul Montoya

Lithium is present in some salt lakes along with other brines in different concentrations. In order to simulate the right groundwater flow regime of Lithium brine along other brines we need to model variable density flow from multiple species. This type of modeling is possible on the latest versions of Modflow 6 with the BUY package and Model Muse.

We have developed an applied case of variable density flow modeling on a andean salt lake that is pumped from 3 wells in 10 years. The model has a grid refinement close to the lake and works with 6 brines: B(OH)3, NaHCO3, NaCl, KHSO4, LiHSO4 and NaHSO4. The example implements the BUY package with all the required parameters together with the configuration of the boundary conditions and initial conditions. Concentration and water balances are processed with Python to evaluate the brine migration over time and the impact of pumping on the water balance.

January 24, 2025

Topobathymetric elevation generation for flood modeling with geospatial Python

January 24, 2025/ Saul Montoya

Elevation maps that represent surface and river bathymetry are an essential input for flood modeling in software like HEC-RAS. Even with the latest version of high profile open source GIS software as QGIS the combination of a surface elevation map and a river bottom elevation map is a challenge that requires many turnaround, conversion and manual labour. We have developed a useful script that works with surface and river bottom elevation in a "smart" way and creates a geospatial raster with the topobathymetric elevation by the use of geospatial Python libraries as Shapely and Rasterio. The script also includes some key steps to identify the river body and treat the missing values on the bathymetry map.

January 15, 2025

Introducing mf6Voronoi: A Python package for generating MODFLOW6 DISV Voronoi meshes

January 15, 2025/ Saul Montoya

Groundwater modeling with several boundary conditions and complex hydrogeological setups require advanced tools for mesh discretizacion that ensures adequate refinement in the zone of interest while preserving a minimal cell account. Type of mesh has to be engineered in a way to preserve computational resources and represent adequately the groundwater flow regime.

December 20, 2024

Introduction to Water Reservoir System Modeling with HEC-ResSim - Tutorial

December 20, 2024/ Saul Montoya

HEC-ResSim is a tool that supports reservoir simulation models, aiding decision-making for improved reservoir operations. The nature of HEC-ResSim, its flexible framework for describing reservoir operations, and its new and powerful features make it applicable for modeling almost any multi-purpose storage system. The approach used by HEC-ResSim is based on rules to replicate the operational decision-making followed by reservoir operators. For water release processes from the reservoir, HEC-ResSim considers variables such as the time of year, hydrological conditions, water temperature, and simultaneous operations with other reservoirs within the system.

This tutorial covers an applied case of reservoir modeling at the discharge point of an andean basin. The example covers the steps to set up the watershed, define the reservoir network, simulate the hydrological alternative and explore output hydrographs and tables.

Tutorial

Input files

https://owncloud.hatarilabs.com/s/mj8eEm1QmX2A69m

Password to download data: Hatarilabs

December 03, 2024

Modeling Hydrogeological Units from Raster Data with Aquifer App and Gempy - Tutorial

December 03, 2024/ Saul Montoya

Construction of complex and high performance groundwater modes requires an appropriate distribution of the hydrogeological units with depth. We have developed an applied case of 3D modeling of hydrogeological units from data provided as raster (*.tiff) files. The webinar all steps from orientation and elevation sampling from raster data, the conceptualization and setup of the Gempy model in Aquifer App and finally the postprocessing of the 3D lithology based on the surface elevation. The input data comes from the USGS research on the aquifer Systems in the Williston and Powder River Structural Basins, United States and Canada.

November 28, 2024

How to create a MODFLOW 6 model from geospatial data with Python and Flopy - Tutorial

November 28, 2024/ Saul Montoya

We have developed an applied case of groundwater model discretized from ESRI Shapefiles with refinement areas. Boundary conditions are also set up from spatial data with the intersect functionality of Flopy. Model surface and layer bottom are imported / processed from xyz point data. The simulation is run for one steady and ten transient stress periods and results are plotted for head on aerial view and cross section.

November 04, 2024

Modeling Variable Viscosity Groundwater Flow with MODFLOW 6 and Model Muse - Tutorial

November 04, 2024/ Saul Montoya

In order to improve the accuracy of a groundwater flow simulation we need a strong conceptual model, a high quality observation dataset and a numerical code that can handle specific characteristics of the groundwater flow we want to evaluate. MODFLOW 6 can deal with variable density flow with the BUY package and also with variable viscosity with the VSC package that is implemented on the latest versions of Model Muse. This tutorial covers an applied case of variable viscosity modeling due to the injection of salinity and heat to a model with regional groundwater flow. The main features for the implementation of the VSC package are explained and the resulting concentrations on two observation points are evaluated with Flopy codes.

October 24, 2024

4 applied courses in groundwater modeling with MODFLOW - Flopy and more

October 24, 2024/ Saul Montoya

Besides doing amazing tutorials in groundwater modeling with MODFLOW and Flopy we also have the most complete set of Flopy courses applied to different areas of groundwater resources evaluation and impact assessment. But, there is more: we have a whole program that trains you from zero knowlege of Python to develop fully featured groundwater flow models.

October 09, 2024

Tutorial in Groundwater Modeling of Faults and Fractures with Modflow6 - Disv on Model Muse

October 09, 2024/ Saul Montoya

With Model Muse and MODFLOW6 DISV you can model faults and fractures having small cells close to the fracture alignment. In order to achieve small cell sizes close to the fracture aligment the normal MODFLO6 discretization schema (columns and rows) creates a series of unused/unwanted cells, but MODFLOW6 came with two new discretization options that allow us to have local refinements close to areas of interest decreasing the total amount of cells and thus the decreasing computational time.

September 25, 2024

Geological Modeling of Sedimentary Layers from Geospatial Data with Python and Aquifer App - Tutorial

September 25, 2024/ Saul Montoya

A practical example for constructing a geological model using Python and Aquifer App, based on geospatial data in ESRI Shapefile format and raster data in Tiff format. The tutorial demonstrates the complete procedure of spatial data processing using libraries such as Geopandas, Rasterio, and Pyvista to create surface and orientation files, which are then input into Aquifer App. Finally, the project is run locally in Gempy, generating the geometry of lithology and contacts.

September 09, 2024

Coupling local geological data into Model Muse with Python and Aquifer App - Tutorial

September 09, 2024/ Saul Montoya

Spatial discretization for a mine related groundwater model has to come from geospatial data that has a system of reference (crs). The latest version of Modflow that is Modflow 6 implements the discretized by vertices option (DISV) that allows the creation of triangular, quadtree, voronoi meshes among other options. We have developed some Python scripts to create voronoi meshes from shapefiles where the user has to define a limit polygon, layers (point, line or polygon) and refinement levels. The code generates meshes with adequate performance and gives geospatial output for the final voronoi mesh as well as the intermediate steps.

September 04, 2024

Open, modify, run, and read output from HEC-RAS models with Python - Tutorial

September 04, 2024/ Saul Montoya

Python can communicate with other softwares through standards in Windows (COMs) and thus provides a higher level of interoperability for river flow models made in HEC-RAS. The amount of tools provided by HEC-RAS through the COM is huge; in this tutorial we will cover some examples of HEC-RAS model interaction for two applied cases from Python scripts in Jupyter Lab.

August 15, 2024

How to create a Geological Model from a Point Shapefile with Gempy and Aquifer App - Tutorial

August 15, 2024/ Saul Montoya

This is an applied case were we build a geological model only with lithology information stored as a point shapefile. The tutorial covers all steps from raster (array) generation for all surfaces together with the orientation sampling and format of surfaces/orientations as Gempy input files. The generated data was inserted in the Aquifer App that implements an interface to create Gempy models. Finally the lithology and layer surface geometry was exported as Vtk to be represented on Paraview with the initial data to evaluate the accuracy of the simulation.

August 12, 2024

Geological modeling of a petroleum system with Gempy, Gemgis and Aquifer App - Tutorial

August 12, 2024/ Saul Montoya

Aquifer App offers a friendly, clean and powerful way to create Gempy scripts for geological modeling. We have developed an applied case of a 3D petroleum system model for a part of the Williston Basin, USA that contains the Nesson Anticline. Top layer information was provided as raster format where elevation and orientation for random points were extracted with Python codes using the Gemgis package and exported in Gempy input file format. On Aquifer App the processed CSV files were inserted and the geological model was set up with the corresponding geological sequence.

August 01, 2024

NetCDF for water resources with Python for dummies (CHIRPS dataset) - Tutorial

August 01, 2024/ Saul Montoya

NetCDF has become a popular choice for storing and delivering precipitation and water resources related data. Its capacities to store multiple geospatial raster layers over time allow another level of abstraction on data analysis, however the format is of limited use on normal desktop applications and most times we are required to use a programming language such as Python or R.

July 17, 2024

Export 3d Geological Units as Vtk format with Gempy and Aquifer App - Tutorial

July 17, 2024/ Saul Montoya

Aquifer App offers a friendly, clean and powerful way to create Gempy scripts for geological modeling. The platform also allows users to run the scripts and download the whole modeling project that has the 3D geometry of the geological units and faults in Vtk format. This tutorial shows an applied case of geological data visualization, model creation, model run, export and representation of the Vtk files in Paraview.

July 12, 2024

Regional geological modeling with surface topography with Gempy and Aquifer App - Tutorial

July 12, 2024/ Saul Montoya

The coupling of Python scripts with the Aquifer App platform allows us to generate geological models with a versatility not seen before. This is a basic example of regional geological modeling in Aquifer App with surface topography from a digital elevation model in TIF format. The tutorial also makes a 3D representation of the contacts and orientations of the one layer geology in a Jupyter notebook for better analysis of the geological sequence.

Blog

Regional groundwater flow modeling with Voronoi mesh on MODFLOW6 DISV and Flopy - Tutorial

Groundwater modeling figures and related topics

Basic example of groundwater modeling with MODFLOW6 and Flopy in Google Colab - Tutorial

Modeling Lithium brine pumping impact with Modflow 6 and Model Muse - Tutorial

Topobathymetric elevation generation for flood modeling with geospatial Python

Introducing mf6Voronoi: A Python package for generating MODFLOW6 DISV Voronoi meshes

Introduction to Water Reservoir System Modeling with HEC-ResSim - Tutorial

Tutorial

Input files

Modeling Hydrogeological Units from Raster Data with Aquifer App and Gempy - Tutorial

How to create a MODFLOW 6 model from geospatial data with Python and Flopy - Tutorial

Modeling Variable Viscosity Groundwater Flow with MODFLOW 6 and Model Muse - Tutorial

4 applied courses in groundwater modeling with MODFLOW - Flopy and more

Tutorial in Groundwater Modeling of Faults and Fractures with Modflow6 - Disv on Model Muse

Geological Modeling of Sedimentary Layers from Geospatial Data with Python and Aquifer App - Tutorial

Coupling local geological data into Model Muse with Python and Aquifer App - Tutorial

Open, modify, run, and read output from HEC-RAS models with Python - Tutorial

How to create a Geological Model from a Point Shapefile with Gempy and Aquifer App - Tutorial

Geological modeling of a petroleum system with Gempy, Gemgis and Aquifer App - Tutorial

NetCDF for water resources with Python for dummies (CHIRPS dataset) - Tutorial

Export 3d Geological Units as Vtk format with Gempy and Aquifer App - Tutorial

Regional geological modeling with surface topography with Gempy and Aquifer App - Tutorial

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