Major/ Minor design for a street drainage system at Gymea using the ILSAX hydrological model
The file for this example is Gymea ILSAX Example - Lite.drn, located in the folder C:\ProgramData\Drains among the Lite examples. If this folder is hidden, in File Explorer select the View tab and tick the Show Hidden Items box to make it visible.

This produces the results shown below:

It is still possible to run Horton (ILSAX) with ARR 1987 rainfall patterns, as long as the ARR v4 (2019+) option is not slected in the Project Options property sheet.The example named Gymea ILSAX Example with 1987 rainfalls.drn runs the older hyetographs.
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