View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000292 | Dwarf Fortress | Weather | public | 2010-04-03 12:23 | 2012-02-15 08:46 |
| Reporter | Draco18s | Assigned To | |||
| Priority | normal | Severity | minor | Reproducibility | have not tried |
| Status | new | Resolution | open | ||
| OS | Windows | OS Version | 7 | ||
| Product Version | 0.31.01 | ||||
| Summary | 0000292: Murky pools in some regions dry up before they can refill | ||||
| Description | I've got a very large lake I drained in order to irrigate my farm and when Spring rolls around the lake only refills up to a point where it has a smattering of 2s and dries out again completely by Early-Mid Summer (heck, a few squares evaporate *while its still raining*). Unsure if it has to do with the temperature of the region, but I don't recall that it was abnormally hot, but it rains for only two months out of the year. | ||||
| Steps To Reproduce | Dependent on region? | ||||
| Tags | Intentional/Expected?, water, Weather | ||||
| related to | 0002464 | new | Murky Pond instantly refilled |
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This is rainfall dependent as of 40d (possibly longer). In a more dry climate you may need to help replenish a murky pool up to 2/7 or higher so that rainfall can do the rest. In a desert climate you can pretty much just kiss your murky pond goodbye. In short this is probably working as intended. |
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Thing is, I embarked on a forest near mountains. It shouldn't be a particularly dry region. There are over a dozen lakes of at least 25 tiles in size, up to 60 tiles. The embark is only a 3x3, so that's 4 lakes per 48x48 tiles. In any case, water probably shouldn't evaporate *while its raining* (that whole Humidity thing). |
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I believe the default create-a-world is using medium island which has a rainfall setting of 0:100:26:26 By the 40d rules of world generation, a true forest (dense forest) has to have rainfall 66+ However other forest, sparce trees can have as little as 10 rainfall. ponds evaporating before they refill is very normal behavior at lower rainfall levels. |
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Workaround: Use a floodgate to only drain the lake down to 3/7. |
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I generated a small world and the place is at least moderately forested (from looking at it I think its probably heavy). Garanis: that would work...if I'd put a floodgate in *before draining it.* |
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or in your case since it's already empty, place a floodgate (or wall) and pond/refill it back up to 2/7 or greater. Nature should do the rest if there's any rainfall at all in your region. |
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It did eventually refill (I had a floodgate). Designating it as a pond didn't help as its so large (and dwarves kept dumping out a bucket and running off). Some time a year later the rain lasted long enough to get it up to 2s and 3s. |
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"In any case, water probably shouldn't evaporate *while its raining*" This might be related to the dwarves-melting-in-rain bug. Perhaps the rain is excessively hot? |
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Does this still occur in 31.08? |
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Reminder sent to: Draco18s Do you have a save that reproduces this problem in 31.10? If so, it would be helpful to upload the save to http://dffd.wimbli.com/ |
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I'm not sure I have that save floating around anymore Footkerchief. And I haven't been playing 31.10 at all. But I'll keep my eye out for it. |
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This one *is* still occurring. I just had a lake refill partially (all 1s and 3 2s) and it dried out again before ever getting more water. |
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A VERY important detail to look at is the temperature of the region. If it is Warm or Hot, then it will be dryer than if it is temperate or cool/cold. You had stated that it was only raining two months out of the year. If the pond is realatively large, this may be the problem. Also, a square with a water level of 1 is pretty much guaranteed to dry up pretty quick anywhere, just through evaperation. If that was not true, we would lose many more forts to flooding. |
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This should probably be renamed from "natural lakes" to "murky pools", since lakes are completely different things in Dwarf Fortress. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2010-04-03 12:23 | Draco18s | New Issue | |
| 2010-04-03 12:25 | DoctorZuber | Note Added: 0000617 | |
| 2010-04-03 12:28 | DoctorZuber | Note Edited: 0000617 | |
| 2010-04-03 13:11 | Draco18s | Note Added: 0000635 | |
| 2010-04-03 13:20 | DoctorZuber | Note Added: 0000638 | |
| 2010-04-03 13:24 | garanis | Note Added: 0000639 | |
| 2010-04-03 13:32 | Draco18s | Note Added: 0000641 | |
| 2010-04-03 13:36 | DoctorZuber | Note Added: 0000644 | |
| 2010-04-03 16:43 | Draco18s | Note Added: 0000712 | |
| 2010-04-05 11:35 | Qloos | Tag Attached: water | |
| 2010-04-05 11:35 | Qloos | Tag Attached: Weather | |
| 2010-04-05 12:03 | Warlord255 | Note Added: 0001151 | |
| 2010-06-30 13:39 |
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Tag Attached: AWAITING UPDATE | |
| 2010-06-30 13:39 |
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Note Added: 0009412 | |
| 2010-07-13 22:17 |
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Relationship added | related to 0002464 |
| 2010-07-18 10:35 |
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Note Added: 0010579 | |
| 2010-07-18 10:42 | Draco18s | Note Added: 0010581 | |
| 2010-07-22 16:18 | Draco18s | Note Added: 0010852 | |
| 2010-07-22 18:47 | burlingk | Note Added: 0010854 | |
| 2010-10-07 10:58 | Quietust | Note Added: 0013241 | |
| 2012-02-15 08:46 |
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Summary | Natural Lakes Don't Refill enough. => Murky pools in some regions dry up before they can refill |
| 2012-02-15 08:46 |
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Tag Detached: AWAITING UPDATE | |
| 2012-02-15 08:46 |
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Tag Attached: Intentional/Expected? |
