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I would like to partially fill back in a moat I dug around my fortress walls and that involuntarily filled with water. Is there a way?

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I have tried the following:

  • build a wall connected to a floor at level z+1
  • remove the floor.

The wall falls as expected right to level z-1 (the level of the ramp) but it does not fill it.

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Constructed walls deconstruct when they fall, only a wall made from solidified magma wouldn't. You would need to build a wall in the flooded location. but before you can do that the water needs to be removed. Probably the easiest way is to dig a drain to the edge of the map one Z level below, then dig up into that spot. A screw pump could also remove water long enough to build the wall, but those can be kind of messy.

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  • @Mark-Ripley Thanks for edits to my poor typing
    – Apeiron
    May 7, 2019 at 15:23
  • In this case there seems to be a convenient river available to pump water into (but that's also where the water is coming from, probably, so it might just make a loop)
    – user253751
    Dec 16, 2020 at 18:48
  • Pumping back into the river would work as well. just build walls around the output so it doesn't flood everywhere
    – Apeiron
    Dec 18, 2020 at 22:53
  • I just noticed that the "river" might actually be brooke, in which case a channel needs to be dug first
    – Apeiron
    Feb 12, 2021 at 22:07

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