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[xcorps]

I have a brook nearby that I'd like to use as a barrier. Is it possible to increase the depth of the brook so that it's not walkable? I'd rather do that than try to wall one side of it off. The wiki page on brooks makes me think that the answer is no, but I thought I'd ask here.

[i2amroy]

You literally answered your own question in the title text. What you want to do is "channel" the surface of the brook and it will become deeper (brooks function basically as a river with an invisible floor on top of them).

[xcorps]

Ah, I see. Thanks very much for the reply. I was confused by the wiki description of the brook tiles.

As a follow up, I'm embarked in a fairly small area at the top of cliffs. If I were to channel a diversion for the brook so the water flowed off the cliff, would it flood out the valley below, or just flow off-map?

[Babylon]

water makes a kind of poor barrier, since some enemies swim and if you are not in a warm biome it can freeze.

[Garath]

Ah, I see. Thanks very much for the reply. I was confused by the wiki description of the brook tiles.

As a follow up, I'm embarked in a fairly small area at the top of cliffs. If I were to channel a diversion for the brook so the water flowed off the cliff, would it flood out the valley below, or just flow off-map?

general rule is that water will fill anything up to the level of its source, unless there is sufficient drainage/evaporation

so yeah, it'll flow off the map, though you can ofcourse dig a moat or build a wall to make a lake

[xcorps]

Thanks for the help