Flow Reconstructure will raise the center of the terrain?

[A_Lingll]

As shown in the image, in a large-scale scene, the terrain processed by Flow Reconstructure has a significantly higher elevation in the center than around the edges (this case was achieved by simply changing the startup area to 81.92 km).

This makes me curious about the principles behind Flow Reconstructure. Perhaps someone can explain the algorithm reason?

[blattacker]

At a quick glance, my suspicion would be that, since the Flow Recon device by default is attempting to drain all water to either existing water or the map borders, if you didn’t plug in any water, the only option is has is to drain to the map borders. On such a large map, with many elevation changes, raising the center to be a higher elevation than the edges would be the only way to drain water to the edges without causing unrealistic scenarios (like water running uphill).

That being said, I have not tested out the newest version of WM yet, so I don’t know if the behavior has changed.