NEW version of HGS PREMIUM August 2026 (REVISION 3002)

Support Ongoing Improvements to HGS

Share your ideas to help improve the HydroGeoSphere user experience. Your feedback plays an important role in guiding future development— whether it’s new commands, workflow enhancements, or usability improvements that support more efficient integrated hydrologic modelling.

The HydroGeoSphere August 2026 release is now available for download.

This month’s update focuses on improving water volume and transport calculations, expanding transport capabilities across the 1D well, tile, and channel domains, and enhancing water balance and output reporting. Together, these updates improve simulation accuracy and provide greater flexibility for analyzing solute transport and water movement across multiple HydroGeoSphere (HGS) domains.

Expanded channel domain water balance reporting

• Expanded channel domain water balance reporting

• Updated the nodal fluid mass balance commands (polygon tracking) to include the full water balance for the channel domain.

  This provides a more complete view of water movement when using polygon tracking in models that include channels.

Expanded transport capabilities for well, tile, and channel domains

Several updates extend transport functionality across the 1D domains:

• Added concentration and solute exchange flux binary output files.

• New well domain property file command coupling dispersivity.

• Updated the transport boundary conditions specified concentration, specified concentration from file, and specified concentration from initial concentration so they can now be applied to the 1D domains.

• Updated the commands initial concentration, initial concentration from file, and initial concentration from output file so they can now be applied to the 1D domains.

  These updates provide greater flexibility for defining, simulating, and analyzing solute transport within wells, tiles, and channels.

Expanded dual continuum output

• Added volumetric water content for the dual continuum domain to the binary output files and observation well/point files.

  This provides additional information for analyzing water storage and saturation conditions within dual continuum models.

Fixes for solute exchange and transport mass balance calculations

• Fixed a bug in the computation of dispersive solute exchange terms for the well, tile, and channel domains.

• Fixed transport mass balance reporting for the well, tile, and channel domains so that initial mass and solute exchange fluxes are reported correctly rather than always appearing as zero.

  These fixes provide more accurate transport calculations and mass balance reporting across the 1D domains.

Fixes for water volume and volumetric water content calculations

• Resolved bugs in the computation of porous medium and dual continuum water volume and volumetric water content caused by improper scaling by the volumetric fraction of total porosity when a dual continuum domain is defined.

  These fixes improve the accuracy of water storage calculations in models that include a dual continuum domain.

Documentation updates

• The HydroGeoSphere Reference Manual (hydrosphere_ref.pdf) has been updated to include these new features and enhancements.

You can find details about these new features in the HydroGeoSphere Reference Manual. And as always, we are committed to the continued improvement of the user experience. Do you have suggestions for new commands or improvements to the user experience? Send your ideas to support@aquanty.com