Changelog for TUFLOW Plugin 2026.0.x Bug Fixes

General Notes

This page contains a list of bug fixes for the 2026.0 release series of the TUFLOW Plugin.

  1. General Notes
  2. TUFLOW Plugin 2026.0.16
  3. TUFLOW Plugin 2026.0.15
  4. TUFLOW Plugin 2026.0.14
  5. TUFLOW Plugin 2026.0.13
  6. TUFLOW Plugin 2026.0.12
  7. TUFLOW Plugin 2026.0.11
  8. TUFLOW Plugin 2026.0.10
  9. TUFLOW Plugin 2026.0.9
  10. TUFLOW Plugin 2026.0.8
  11. TUFLOW Plugin 2026.0.7
  12. TUFLOW Plugin 2026.0.6
  13. TUFLOW Plugin 2026.0.5
  14. TUFLOW Plugin 2026.0.4
  15. TUFLOW Plugin 2026.0.3
  16. TUFLOW Plugin 2026.0.2
  17. TUFLOW Plugin 2026.0.1

TUFLOW Plugin 2026.0.16

Release date: 10 July 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed a bug when plotting from TUFLOW cross-sections (e.g. 1d_xs) layers.

TUFLOW Plugin 2026.0.15

Release date: 09 July 2026

Other

  • Updated toolboxes to work with QGIS 4.2, which made some breaking changes to the QGIS API. Some of the tools affected by this change are the import empty and create project toolboxes. If using QGIS 4.2, please ensure you are using the latest version of the TUFLOW Plugin (2026.0.15 or later) to avoid any issues with these tools.
  • Import Empty - The links to the TUFLOW User Manual located in the empty tooltips have been reverted back to the 2025.1 TUFLOW User Manual version. This is an older version of the manual, however the documentation on the empty files will be very similar to the current manual version (2026.0). The reason for this change is that the 2026.0 TUFLOW manual uses a slightly different document structure, which meant the links did not point to the correct sections in the manual. The structure of the TUFLOW manual will most likely change again for the next TUFLOW manual release, so the decision was made to wait until the next manual release to update the links.

TUFLOW Plugin 2026.0.14

Release date: 06 July 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed an issue that could occur when logging when combined with other plugins that used the Python logging module (under certain configurations).

TUFLOW Plugin 2026.0.13

Release date: 06 July 2026

Bug Fixes

  • ReFH2 to TUFLOW - Fixed a bug where the refh2.pyd would become locked and would stop the plugin from being re-loaded or upgraded. The location of the refh2.pyd file is still copied to %userprofile%/.tuflow_plugin/refh2, however is placed within a subdirectory. The subdirectory is dynamic and the location will change to allow the plugin to be upgraded correctly as the refh2.pyd can not be upgraded in place.
  • ReFH2 to TUFLOW - Fixed a bug where the refh2.pyd file was being copied each time the plugin was opened, rather than only if there were changes to the file.

TUFLOW Plugin 2026.0.12

Release date: 30 June 2026

Bug Fixes

  • ReFH2 to TUFLOW - Fixed a bug introduced in 2026.0.6 that caused the ReFH2 to TUFLOW tool to stop working.

TUFLOW Plugin 2026.0.11

Release date: 18 June 2026

Bug Fixes

  • Browser Panel - Fixed a bug when loading a TCF that contained a “TIF Projection” command that pointed to a file that did not exist.
  • Browser Panel - Fixed a bug when loading a TCF that used a “SHP Projection” that pointed to a 1d_nwk file that contained pit references. This could cause some pits to be spuriously seen as vector layers.
  • Browser Panel - GPKG inputs were case-sensitive. This could cause some layers to be missing from the Browser Panel.
  • Browser Panel - Material database preview now shows .tmf depth varying manning’s n entries as plottable.
  • Browser Panel - Fixed a bug where missing GPKG layers would not be shown in the Browser Panel. They are now correctly shown and marked as missing.
  • Load From TCF - Layers will now be loaded correctly if the model path contains parenthesis.

Other

  • Bumped the PyTUFLOW version to 1.1.8.

TUFLOW Plugin 2026.0.10

Release date: 16 June 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed a bug where grouped GPKG check files that were separated into 1D and 2D databases, were not correctly finding the bc_tables_check.csv and 1d_ta_tables_check.csv files.
  • TUFLOW Viewer V2 - Fixed a bug where the _sac_check_R check file was not plotting when features were selected.

TUFLOW Plugin 2026.0.9

Release date: 08 June 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed a bug that could cause a Python error when loading a TUFLOW XMDF file if the “ZH” map output data type was included in the file and the data type was not in the “Temporal” subdirectory (within the XMDF file). This could happen if the “ZH” map output data type was used but the bathymetry was static (i.e. the model did not contain a variable z-shape).

Other

  • Bumped the PyTUFLOW version to 1.1.7.

TUFLOW Plugin 2026.0.8

Release date: 05 June 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed a bug when the “ZH” map output data type was included in the XMDF result file which caused an error when loading the file in QGIS.
  • TUFLOW Viewer V2 - Fixed a bug that could occur when extracting data from a 2D only NetCDF Mesh output from TUFLOW FV with only QGIS drivers.

Other

  • Bumped the PyTUFLOW version to 1.1.6.

TUFLOW Plugin 2026.0.7

Release date: 27 May 2026

Bug Fixes

  • Fixed a bug with the TUFLOW Runner on QGIS versions running Qt5 introduced in the previous release. This bug would cause an endless error loop when trying to initialise the runner.

Other

  • ARR to TUFLOW - Increased the number of decimal places from one to three in the climate change scenario dialog.

TUFLOW Plugin 2026.0.6

Release date: 26 May 2026

Bug Fixes

  • TUFLOW Model in Browser - Fixed a bug where database entries could not be plotted if TUFLOW Viewer V2 was not toggled on. This would result in a Python error 'NoneType' object has no attribute 'theme'
  • TUFLOW Model in Browser - Fixed a bug when previewing data from a pit inlet database. The area column was incorrectly being applied as an “index add” column which caused the depth column to have the area added to the values.
  • TUFLOW Viewer V2 - Fixed a bug for NetCDF mesh outputs that contained the “zb” result type. The “zb” result type would incorrectly be ignored, a fix has been added to ensure that the “zb” result type is correctly recognised and extracted.
  • TUFLOW Viewer V2 - Fixed a bug where the ring that appears around a time series point when hovering over the corresponding line in the time series graph was not disappearing. This could happen if the line was very flat.
  • TUFLOW Viewer - Added a fix to handle TUFLOW Quadtree PO region results that could write the wrong number of features in the TPC file. This could trigger an error. While technically this mismatch could be an issue, in most instances this error won’t affect result viewing.

Other

  • Bumped the PyTUFLOW version to 1.1.5.
  • The refh2.pyd file is now copied into a standard location: %userprofile%/.tuflow_plugin/refh2. Previously, the refh2.pyd file was copied into a temporary location within the user’s temp directory. This meant that the location was dynamic which could cause issues for some antivirus/firewall software and IT policies.

TUFLOW Plugin 2026.0.5

Release date: 13 May 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed a bug when plotting a section plot with multiple drawn lines. The plot items and colours would become jumbled if the items were toggled in the drawn item menu.
  • TUFLOW Viewer V2 - Removes a warning message that would be issued when plotting from multiple open time series results (e.g. 2 x TPC results). The warning was issued by PyTUFLOW if one of the results did not contain the ID of the item being plotted. This is now caught before calling PyTUFLOW so that this warning message is not issued.
  • TUFLOW Viewer V2 - Adds a warning message if the user tries to plot multiple channel long sections on a single section plot. This is not currently supported, this can be done by adding additional section plots rather than plotting multiple long sections on the same plot.

Other

  • Bumped the PyTUFLOW version to 1.1.4.

TUFLOW Plugin 2026.0.4

Release date: 5 May 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed a bug when trying to plot the “channel flow regime” which could result in a Python error on some QGIS versions.

Other

TUFLOW Plugin 2026.0.3

Release date: 1 May 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed a bug when saving a default scalar style. If a previous saved style existed for a different save option (options = “map” and “ramp”), the previous option was not being overwritten correctly. This could cause the old option to continue to be used as the default style instead.
  • TUFLOW Viewer V2 - Fixed a bug when using the Style > Restore Default option from within the layer properties dialog. This error caused the result to become disassociated with TUFLOW Viewer which had knock-on effects which could only be solved by restarting QGIS.
  • TUFLOW Utilities - Fixed a bug when using the “TUFLOW_to_GIS” utility that could incorrectly output the maximum water level rather than timestep zero if timestep zero was requested (only happened after “Load XMDF information”).
  • Convert TUFLOW Model GIS Format - Fixed a bug when converting a TUFLOW model that was using symlinks somewhere in the file paths of the model input files. The bug could cause incorrect relative file paths to be written to the control files and/or could cause converted GIS files to be written to the wrong location.
  • SWMM Toolbox - Removed debug code that could cause a Python error.

Other

  • Bumped the PyTUFLOW version to 1.1.2.
  • Fixed a number of security vulnerabilities.

TUFLOW Plugin 2026.0.2

Release date: 9 April 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed a bug that could cause a Python error if a group node was right-clicked in the Layers Panel.

TUFLOW Plugin 2026.0.1

Release date: 8 April 2026

Bug Fixes

  • TUFLOW Viewer V2 - Fixed "u/s structure water level" and "d/s structure water level" plotting. Previously, these result types would not show up in the plot window.
  • TUFLOW Viewer V2 - Fixed a bug when loading GPKG time series files when a channel/node contained all NaN values for a given result type. This could cause a Python error or cause the result to not load properly. This could happen for the "time inlet inflow hours" and "time inlet surcharge hours" result types for TUFLOW-SWMM results.
  • TUFLOW Version Manager - Fixed a bug when finding TUFLOW versions installed via the Windows MSI installer. The version manager was incorrectly pointing the folder location rather than the .exe file.
  • Increment Layer (context menu) - Fixed a bug that caused an error when accepting the dialog for QGIS versions using Qt6.
  • SWMM Toolbox - Fixed an issue where models with inconsistent case for the same entity within a file would not load correctly. While this is acceptable for running SWMM, it is not for the SWMM API TUFLOW uses to extract and convert the output data. Therefore, when inconsistent case is used for geometric entities (nodes, conduits, or subcatchments) they are made consistent based on the primary table when converting to GPKG.