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0003658Dwarf FortressDwarf Mode -- Flowspublic2010-11-17 16:192013-07-08 00:29
Savolainen5 
 
normalminorhave not tried
newopen 
0.31.18 
 
0003658: Outdoor water does not evaporate
I drained a murky pool onto the landscape and it never evaporated away, even though it was all spread at 1/7. In the winter, it all froze and in the springtime, all of the ice thawed at 7/7, meaning it spreads even more. It should be noted that water underground still evaporates.
All you have to do is get some water on the ground outside.
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Issue History
2010-11-17 16:19Savolainen5New Issue
2010-11-17 16:30QuietustNote Added: 0013964
2010-11-17 17:00Logical2uNote Added: 0013965
2010-11-17 17:41rephikulNote Added: 0013967
2013-07-08 00:29youenNote Added: 0024054
2013-07-08 00:50youenNote Edited: 0024054bug_revision_view_page.php?bugnote_id=0024054#r8961

Notes
(0013964)
Quietust   
2010-11-17 16:30   
Was it raining at the time?

Back in 40d when I was finishing some large scale obsidian casting, I noticed that the excess water on the top floor didn't start to evaporate until the rain had stopped (and this was in a tropical moist broadleaf forest, so murky pools never dried up or anything).
(0013965)
Logical2u   
2010-11-17 17:00   
I would almost guess it's too cold a climate for it to evaporate naturally, but I'm pretty sure that's not how the evaporation code works right now.

Do you have temperature turned on in your init settings?
(0013967)
rephikul   
2010-11-17 17:41   
I'm pretty sure water should evaporate even with temperature turned off. If that pool is drained too close to winter, it might get season changed before evaporation happen. Try drain it again next time or just dig it away and see if the problem persist.
(0024054)
youen   
2013-07-08 00:29   
(edited on: 2013-07-08 00:50)
Same issue in a world I recently played. It was raining all year long, and water does not evaporate while it's raining, so it never evaporates (unless it's underground). Building a roof and walls around the water does not help.

I'm sure it's caused by rain, because at some time it did stop raining for a few seconds, and I saw some tiles disappear.

In winter, it freezes, which creates frozen mud most of the time. This is not an issue as it melts back to 1/7 water. However, if a sapling is on the tile, it creates an ice wall, which melts to 7/7 water, so it does spread. The only solution I've found was to build floors directly on the water, so that it disappears, and then de-constructing the floor, leaving a dry soil.