Release Notes in this Version

Importing ground models from GeoTIFF

A problem with ground models shifting by one cell row when importing from GeoTIFF has been fixed.

Importing grid ground models from files

When the import of a grid ground model from an ASCII raster file fails, InfoWorks ICM now releases the file so that it can be renamed or edited without having to exit InfoWorks ICM.

Copying networks to cloud databases

Networks copies into cloud databases from Workgroup databases on which the archive tool had previously been used were sometimes missing data. This problem would only occur if all of the following apply:

• The network being copied has been modified by the archive tool and there is an archive file.
• The network was copied to the cloud with a 2025 version of the software.
• The network has branches.
• Some data in a branch has been archived.
• New objects have been created in a branch and in the trunk.

This issue has been fixed.

Validating RTC in the grid view

An issue with an error "Please enter a valid argument" when validating RTC in the grid view has been resolved.

RTC ranges

Simulations should no longer fail due to the presence of an object in a RTC range with '.' as its penultimate character.

RTC editor

Performance of the RTC tree control when working with Range objects has been improved.

4K displays

The appearance of toolbar buttons and other areas of the user interface has been improved for 4K displays when running Windows 11.

CSV export of FEH2013 point descriptors

CSV export of FEH2013 point descriptors now respects the gauge_data.

Crash when opening legacy networks

A crash when opening some networks created in version 6.5 or earlier has been fixed.

Exporting to SWMM5

When exporting from SWMM networks to SWMM5, system flow tolerance and lateral flow tolerance are now exported as integers.

DWF in SWMM networks

In the absence of a time pattern, a dry weather flow factor of 1 is now assumed, instead of 0.

Printing custom graphs

When printing a custom graph, if the title and statistic block is set to be excluded via the page setup dialog, it is now not printed.

Import from XPSWMM

When import an xpx file into a SWMM network, SCS initial abstraction factor are now imported correctly.

Ruby method model_object_collection

The Ruby method model_object_collection now returns a meaningful message if an invalid type is requested, instead of "Unexpected number of bytes read from buffer".

Exporting FEH2022 to CSV

Exports of FEH2022 rainfall events to CSV now have correct profile names.

Close gaps and overlaps tool

A crash in the close gaps and overlaps tool when used with a mesh level zone with no geometry has been fixed.

Rainfall in SWMM simulations

Results of SWMM simulations should now show the correct rainfall for subcatchments and rain gages.

InfoSWMM importer

Simulation options and timestep controls are now imported correctly from InfoSWMM.

Importing hydrology from SWMM networks into InfoWorks networks

Hydrology using runoff model type SCS_curvilinear and infiltration model Curve_number is now correctly imported into InfoWorks networks from SWMM networks.

Theming rainfall with GIS layers

When the rainfall theme is displayed with the option "Rainfall Intensity - Show Layers" the GIS layers is now shown on top of the rainfall.

Statistical reports

Statistical report values now align with graphed results for the same link.

Weirs

It is now possible to select the default flag on the secondary discharge coefficient on a weir link. The default value will be the same as the current primary coefficient.

Validation of inline banks

A spurious validation error at inline banks has been removed.

Creation of TIN grounds model from LandXML

Some issues with the creation of TIN ground models with breaklines, contours and data points from LandXML have been fixed.

Import of SWMM network into InfoWorks network

The number of duplicate runoff surfaces created when importing a SWMM network into an InfoWorks network has been reduced, although there is still work to be done to reduce this further.

Importing complex polygons from a shapefile

Multi-part polygon features are now imported correctly from a shape file of type CShapefile::ePolygonZ.

Grid windows

It is now possible to change the font size in grid windows from the Grid menu.

Subgrid meshes

The tech preview feature Subgrid Sampling was not working correctly when meshing with walls. This has been fixed.

2D conduits

2D conduits (conduit type "Conduit 2D", "Linear Drainage (2D)" or "Culvert (2D)") potentially had minor inconsistencies in behaviour between CPU and GPU runs. This has been fixed when using a database of version 2026.1 or later. Databases of earlier formats retain the current behaviour.

CNSWMM infiltration

An error in the treatment of the rainfall percentage parameter in the CNSWMM infiltration method has been corrected.

Head/discharge tables in 2D simulations on GPU

Head/discharge tables were not being extrapolated correctly when running simulations on a GPU. This meant that head values outside the range of the head/discharge table were giving rise to an incorrect discharge value. This has been corrected.

Running on a new PC

Some users experienced an error "Getting options: User has opt-out for event logs" when first running the software on a clean PC. This should no longer happen.

File geodatabase import

A crash that was occurring when attempting to import a polyline with missing Z values from a file geodatabase has been rectified.

Cloud database corruption

A very rare problem with cloud databases becoming corrupted, resulting in run failures and unexpected behaviour of the tree view, has been fixed.

Vulnerabilities

The following security vulnerabilities have been addressed:

CWE-787, CVE-2024-9681, CVE-2024-58249, CVE-2023-46218, CVE-2025-0725, CVE-2025-0167, CVE-2024-11053, CVE-2024-9681, CVE-2024-8096, CVE-2024-7264, CVE-2024-2398, CVE-2024-2004, CVE-2023-46219

See the Autodesk Trust Center for details about vulnerabilities in InfoWorks software.