Applied case of local groundwater modeling based on a regional groundwater flow to evaluate the interaction of the water reservoir with the groundwater flow system and the seepage rate from the reservoir. The model runs on steady state and shows the procedure to modify original/final surfaces without error on layer thickness.
Read MoreApplied case of groundwater modeling in the area influenced by a water reservoir. This tutorial provides the regional flow conditions that serve as boundary conditions for a refined model of the reservoir's interaction with groundwater.
Read MoreApplied example of the simulation of groundwater inflow to a open pit considering faults of 1 meter thickness. The model has 6 stress period, one steady state and 5 transient stress periods representing the pit development over 4 years of a total mine life of 20 years. The tutorial shows the complete process beginning from mesh creation, model construction, water budget analysis and 3d representation.
Read MoreStiff Diagrams are a common and powerful tool for the representation of surface water / groundwater main ions. Anion and cation concentrations are represented on equivalent weight (meq/l), and usually cations are represented at the left side and anions at the right side. Traditionally, this diagram is useful for the comparison of the main water chemical components by examination of a series of diagrams, however it was not easy to compare the diagrams with the position of the observacion point.
To enhance the chemical analysis on regional scale this tutorial has coupled the Stiff Diagrams with their position on a QGIS project. The diagramas are generated from a spreadsheet with Python on a Jupyter Notebook and stored a vector file (.svg), then the images files are referenced on a style file (.sld) and uploaded to QGIS3.
Read MoreInfiltration galleries are a low cost and low maintenance option for domestic water supply. The amount of inflow water and the interaction with the water bodies are main concerns on the evaluation and design of infiltration galleries. We have done an applied case of inflow simulation to infiltration galleries with MODFLOW6 based on Voronoi meshes. The example covers all steps from mesh creation, steady state model construction, simulation of infiltration galleries and the inflow calculation per gallery group. Finally a 3D representation of the model geometry, boundary conditions and head distribution is performed on Paraview.
Read MoreThis tutorial shows an applied case that covers the discretization of a model using Voronoi grids, taking into consideration the water network, the predictive flow area, and the model boundaries. Based on this mesh, a flow and transport model under steady-state conditions is constructed to simulate the contaminant plume over a period of 50 years, evaluated every 5 years. The model includes piezometers and the development of concentrations over time is evaluated using the Pandas library with Matplotlib. Finally, the entire model geometry, boundary conditions, hydraulic loads, and concentrations are visualized in 3D with Paraview.
Read MoreMODFLOW6 with mf6Voronoi can handle the simulation of specific tasks related to the mine industry. We have already covered the simulation of pit inflows with Voronoi meshes and now we are going to model the seepage from a tailings storage facility. The applied case covers all steps from mesh construction, flow model and transport model. Results are plotted on 2d and exported to 3d in Vtk format.
Read MoreSometimes regional models are required as an input for local models of flow and transport. This is an applied case of the groundwater modeling on the regional scale in the state of Guerrero, Mexico that will be the input for future local models of pit dewatering, and contaminant transport from the tailings dam and waste dump. The groundwater model is built with MODFLOW6 and mf6Voronoi on a series of Jupyter Notebooks and results are plotted with Paraview.
Read MoreGroundwater modeling figures and related topics
Read MoreConstruction 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.
Read MoreBesides 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.
Read MoreWith 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.
Read MoreA 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.
Read MoreSpatial 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.
Read MoreThe 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.
Read MoreThe 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 geological modeling of two horizontal layers in Aquifer App that can create models using Gempy. The tutorial also makes a 3D representation of the contacts and orientations of the layers in a Jupyter notebook for better analysis of the geological sequence.
Read MoreComplex geochemical simulations are entirely possible to be performed with Phreeqc coupled with Aquifer App and Python. Brines can be simulated at different concentrations to obtain relations that are input of other variable density flow models. In this case we have model one brine, sodium bicarbonate, with the REACTION keyword with moles values that range from 0.5 to 12 moles. Values of mass, volume, concentration, and density were processed in Python from the dataframes generated from Aquifer App.
Read MoreWe define evaporation as the process of removing water from the chemical system in Phreeqc and this can be achieved with the REACTION keyword and a negative reaction coefficient. We have developed an applied case of water evaporation from precipitation water and the mix of the resulting water to restore the original volume. The whole Phreeqc setup, simulation and result analysis process has been in Aquifer App.
Read MoreAn example that demonstrates the Phreeqc and Aquifer App capabilities to model ion exchange. This example uses the cation ion exchange approach where only the EXCHANGE keyword is used because EXCHANGE_MASTER_SPECIES and EXCHANGE_SPECIES are included in phreeqc.dat database. The model output is parsed as charts and tables and the solution composition and description are calculated and compared before and after the exchange.
Read MoreGenerating 3D visualizations of groundwater models is essential to analyze the flow regime, perform quality checks and see the interaction of the groundwater body with external factors / boundary conditions. The Flopy library has tools to export the parameters, boundary conditions and results that we have modified and compiled within a Python class. The use of this class allows the generation of Vtk files on a friendly way and in few steps. The tutorial also includes a representation of the parameters generated in ParaView.
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