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This section provides access to legacy versions of our software. Visit the Downloads section to access the most recent version of Flood Modeller, which includes new tools, features and other functionality.

Version 4.X

In order to download Flood Modeller versions 4.0 - 4.3, you must be signed into your Flood Modeller website account.

Version 3.7.X

ISIS 3.7.1 (32 bit)

The 32 bit version of the latest release of ISIS, including our industry leading 1D and 2D solvers.

ISIS 3.7.1 (64 bit)

The 64 bit version of the latest release of ISIS, including our industry leading 1D and 2D solvers.

ISIS 3.7.2 exe update

A new version of the Isis3.exe file to fix a bug in ISIS 3.7.1. Unzip and copy this file into the ISIS/bin folder.

Version 3.6.X

Version 3.5.X

Versions 3.0 to 3.4

Version 2.X

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