This short video demonstrates the essential workflow for building and running a HydroGeoSphere model— including a brief review of the HGS model input file and the process of running key HGS executables .

This webinar introduces practical strategies for building high-quality, efficient HydroGeoSphere models— covering best practices for strong conceptual model development, boundary condition design, staged modeling, and numerical solver optimization to improve convergence and reduce runtimes.

This video training session demonstrates how to visualize and communicate HydroGeoSphere model results using Tecplot 360— covering essential and advanced techniques for creating high-quality 2D/3D plots, images, and animations.

This recorded training session demonstrates how to generate high-quality unstructured meshes with AlgoMesh for use in HydroGeoSphere— covering the fundamentals of triangular finite element grids, mesh generation algorithms, and best practices for integrating real-world geometry into modeling workflows.

This webinar demonstrates how to post-process and visualize HydroGeoSphere model outputs using HGS2VTU.exe—covering its core features, supported file formats, and time-series and resampling capabilities.

This tutorial introduces the particle tracing capabilities of HydroGeoSphere. Particle tracing allows users to track the movement of massless particles through the subsurface to visualize flow paths and transport dynamics.

This tutorial introduces how to integrate PEST with HydroGeoSphere for automated parameter estimation and model calibration. Using the Abdul verification problem, it walks through PEST input file structure and shows how to run PEST to optimize HGS model parameters, with all required files provided.

This tutorial introduces the simple drain and makeup water boundary conditions in HydroGeoSphere to maintain a target head by allowing one-way inflow or outflow when thresholds are reached— an effective approach for modeling water management scenarios.

This tutorial explains how to use minimum layer thickness commands in HydroGeoSphere to enforce nodal elevation rules and prevent layer pinchouts when building model meshes, especially in complex geological systems.

This tutorial introduces the reservoir with spillway boundary condition in HydroGeoSphere, which improves reservoir simulations by enabling dynamic inflow and outflow control based on storage conditions— useful for modelling hydraulic water management systems.

This post explains how to use the debug.control file in HydroGeoSphere to adjust simulation performance in real time—allowing changes to convergence, time stepping, output, or pausing without restarting the model.

This post introduces the Map property from raster for chosen elements command in HydroGeoSphere (Rev. 2432), which simplifies assigning spatially variable properties from raster data with flexible mapping and smooth interpolation for heterogeneous models.

Explore how HydroGeoSphere is advancing integrated hydrologic modelling through real-world research applications. Visit our blog to discover the latest HGS Research Highlights and dive deeper into the science behind the work.

This post explains how to use Tecplot export commands in HydroGeoSphere to visualize model properties and structures without running a full simulation, helping users review setups and catch issues early.

Download the ‘Introductory Modules’ - a series of increasingly complex box models which can be reviewed to understand the structure of *.grok files. These are a great introduction to solute transport and discrete fracture flow.

Through the HGS Interface for GMS, users can model watershed-scale processes including surface water, groundwater, and evapotranspiration, with expanded features planned for future releases.

This tutorial demonstrates post-processing options for a HydroGeoSphere model in GMS. Click here to download the project files (.ZIP).

This tutorial demonstrates how to set up a HydroGeoSphere model with a porous media domain in GMS. Click here to download the project files (.ZIP).

This tutorial demonstrates how to add surface flow and evapotranspiration to a HydroGeoSphere model in GMS. Click here to download the project files (.ZIP).

GMS 10.8 introduces a new HydroGeoSphere (HGS) interface, bringing Aquanty’s fully integrated, physics-based hydrologic model into GMS.

This webinar tutorial demonstrates how to build fully integrated groundwater–surface water models using the HydroGeoSphere Interface in GMS—showcasing the GUI, core flow and boundary condition tools, and a guided workflow developed in partnership with Aquaveo.