[Rhys McIntosh]

Hi Luis,

I apologies for the late reply and thank you for all of the effort you put into this. I think I figured out what my issue was. I was able to replicate two identical model runs by dropping the timestep way down to 0.3 s. From what I understand the model was still running through instabilities and looking at the maximum flood extents was showing a lot of these instabilities, which weren’t consistent between model runs.

[Rhys McIntosh]

Hi Luis,

Thank you so much for having a look! I tried your suggestion of removing the jump from 50m to 5m by adding a 15m refinement region between the 50m perimeter and the 5m inner refinement region but I still can’t get the same result twice. Is there any chance you could please send me the modified model you made? It’d at least be a starting point I could work from.

By the way the reason why I need such resolution is because we’re looking at the flooding on a potential subdivision, so we need to resolve roads, stopbanks etc.

[Rhys McIntosh]

Hi Luis, thanks for the reply, it’s much appreciated! Here’s a Dropbox link to my model in its simplest form – https://www.dropbox.com/s/a6heq09e4q0x4om/Precip_model.zip?dl=1 . As you’ll see in the mapper there are two results that are slightly different, they were run one after the other with no changes.

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