Version 4.5

64-bit interface

The Flood Modeller v4.5 user interface is now fully 64-bit. The main advantage of this is it enables the interface to access more memory (the previous 32-bit interface was restricted to approximately 3GB, irrespective of available computer memory). Thus, it should now be possible to load larger GIS datasets into the map view. Note that load speeds will likely be unchanged so loading larger datasets will take time.

New asymmetrical conduit unit

The Asymmetrical Conduit Unit models closed-topped conduits of any possible shape of cross-section. If the conduit to be modelled is not of rectangular, circular, full arch, sprung arch or any other symmetrical shape, then the Asymmetrical Conduit Unit should be used. A minimum of two Asymmetrical conduits are required to create a conduit reach.

New Flood Modeller catalogue tool

The Catalogue Tool has been designed to help organise and manage all data associated to river or floodplain modelling projects using Flood Modeller and/or TUFLOW. It incorporates standardised templates to guide the user to collect all required data associated to a project, and offers multiple benefits for all parties involved.

New pier-loss bridge unit

Our new Pier-Loss Bridge Unit computes the afflux at bridges where the dominant cause of losses is the friction from piers. It utilizes the empirical equation derived by Yarnell (1934).

New Flood Modeller-TUFLOW link lines tool

A new TUFLOW link lines tool for linking your Flood Modeller and TUFLOW models has been developed, automatically filling certain data fields and thus greatly improving the user experience.

Enhancements to our awared-winning Flood Cloud software

The model packaging functionality in Flood Cloud has been enhanced to enable a wider range of model configurations to be run in the cloud. This is in terms of model file locations and file types (and mainly applies to TUFLOW models). Also, Flood Cloud test mode no longer requires a local Flood Modeller (Standard or Professional) licence (or TUFLOW licence).

Enhancements to damage calculator

Options are now provided to enhance your calculations using the Damage Calculator tool to include additional damages beyond direct property damage.

Enhancements to the link line generator tool

Enhancements have been made to our Link Line Generator Tool to provide multiple options for creating link lines, utilising properties from the active network, shapefiles and underlying DEM to simplify the process for the user.

Inclusion of ESTRY components

A significant additional enhancement made to the Flood Modeller 1D solver is the extension of links with TUFLOW HPC to enable inclusion of ESTRY components in linked 1D to TUFLOW HPC models.

Charting 1D model results

Charting of 1D model results has been enhanced to allow easy selection of multiple results for the same plot. When initialising a plot you can now select multiple 1D units either on the map or in the network table. Then, when you access the plotting function (as normal), the revised plot tool window will list your selected units together with a full list of units in your 1D network enabling you to add or remove further units from your selection for plotting. Once the parameter and timing are selected clicking the plot button will generate a chart showing data from all selected units together.

Selecting multiple 1D nodes

1D node selection now includes an option to select multiple nodes by “drawing” an irregular polygon around all required nodes. Activate polygon selection by clicking the icon in the upper left corner of the map. Left-click on the map to start drawing your selection polygon. Each subsequent click will add extra points. The polygon will be displayed as a semi-transparent, yellow shape. To end drawing click with the Ctrl key depressed. The nodes within the polygon will be highlighted and the selection mode will be returned to the default mode (i.e. rectangle selection).

Automatic georeferencing

Flood Modeller now implements enhanced auto-georeferencing when loading 1D networks without an associated gxy file. Flood Modeller will now try to position all 1D units by applying the following conditions:

• River sections with non-zero coordinates will be located in their correct position on the map
• Non-georeferenced units between these river sections will be located on the map between the river section locations. If there are multiple units between river sections, then these will be distributed linearly in the space between the river sections.
• Any units that can’t be positioned using the above conditions will be located adjacent to the main network and distributed linearly within the zoom extent of the georeferenced part of the network. Previously the current map zoom extent was used to encompass these non-georeferenced units (relying on the user to set this extent prior to loading the network).

2D active area draw improvements

2D active area draw tool has new option to trace along a specified polyline shapefile (to form part of the overall active area). If you have a (high) bank line or 1D-2D link lines already defined, then you can quickly trace your active area along these lines in a single operation (rather than separate clicks snapping to one point at a time) to extend your area over every point along the line.

Additional 2D enhancements

A significant additional enhancement made to the Flood Modeller 2D solver is the functionality to allow simulations to start without the user needing to specify a 1D-2D mass balance diagnostic filename, and the ability to write out the calculated maximum extent in an ASCII grid format. The 2D interface has been updated to be compatible with the latter of these changes; users can now select to write out check grids or automatically generate maximum flood extents in ASCII or GeoTIFF format.

...and so much more!

Full details on all new functionality and solver enhancements can be found in the v4.5 release notes available here: