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Difference between revisions of "Freezing"
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| − | [[File:freezing_preview.png|thumb|300px|right|"We all need to huddle"-type weather.]][[Water]] in ''Dwarf Fortress'' | + | [[File:freezing_preview.png|thumb|300px|right|"We all need to huddle"-type weather.]][[Water]] in ''Dwarf Fortress'' will '''freeze''' to become [[ice]] if the temperature is below {{ct|10000}} and the tile is '[[Tile attributes|Above Ground]]'; 'Subterranean' tiles usually remain at a consistent [[temperature]] of {{ct|10015}}, however, inside glaciers even 'Subterranean' tiles can get cold enough to freeze water. |
| − | Water at | + | == Water level effects == |
| − | Water at level | + | Water at levels 1/7 to 3/7 freeze to become an ice floor. Water at level 4/7 or greater freezes to become an ice wall. Any ice wall will produce 7/7 water when melted, or can be mined for 1 boulder of ice. |
| − | This may be useful if embarking on a location with limited water and seasonal freezing, as if collecting the spring melt-water. | + | This may be useful if embarking on a location with limited water and seasonal freezing, as if collecting the spring melt-water. One could expand a lake to 175% its original size (if 7/7 full) so it levels to 4/7, let it freeze then thaw, then drain the expansion to a deeper cistern. If the water in the original lake is preserved at 7/7, the process may be repeated each year. |
| − | + | == Creature effects == | |
| + | Creatures on a water tile that freezes into an ice wall are instantly killed. Dwarves die with the message "<dwarf name> has been encased in ice". The ice wall must be melted or mined in order to access the corpses or their items. | ||
| − | Creatures | + | Creatures, including dwarves and livestock, will take damage, and eventually die, from exposure to temperatures below {{ct|9901}} (see {{token|COLDDAM_POINT|mat}}), and clothes and armor do '''not''' prevent this, though they may slow the process. |
| − | + | == Building effects == | |
| − | Constructing in or on a tile that freezes has mostly no problems (see below), floors | + | Constructing in or on a tile that freezes has mostly no problems (see below), floors placed on or in ice will stay there through melts and freezes. |
| − | Floor hatches will disassemble if covered by an ice wall. | + | Floor hatches will disassemble if covered by an ice wall. The hatches and any associated mechanisms survive the process, but will wash away once the ice melts. |
| − | Floor grates | + | Floor grates placed on water that freezes will be "uninstalled" come spring. |
| − | + | == Melting == | |
| − | Ice can melt when the temperature rises as part of the natural cycle of seasons. Some biomes may be frozen all year round and others may never freeze. Ice can also be melted by proximity to [[magma]]. | + | Ice can melt when the temperature rises as part of the natural cycle of seasons. Some biomes may be frozen all year round and others may never freeze. Ice can also be melted by proximity to [[magma]]. An ice tile with magma moving above or beneath it, or within 2 tiles on the same z-level, may cause the ice to melt (or will prevent water freezing in the first place); see [[Magma#Properties_of_magma|properties of magma]]. |
== Climate == | == Climate == | ||
Freezing [[climate]]s are the coldest, and water on them is typically in permafrost. Choosing to embark in one poses an interesting challenge and offers opportunities for substantial amounts of [[losing|fun]]. | Freezing [[climate]]s are the coldest, and water on them is typically in permafrost. Choosing to embark in one poses an interesting challenge and offers opportunities for substantial amounts of [[losing|fun]]. | ||
| − | + | One of the first challenges presented by a freezing climate is the lack of [[water]] in any conveniently drinkable form. Along with trees, water may be the hardest resource to obtain. The ice chunks left behind while digging through ice cannot be melted into drinking water. There are several ways to approach a freezing area. One of them is to penetrate to the cavern levels, which may have water in liquid form. Another is embarking with a [[volcano]] in site, utilizing the natural obsidian surrounding it to create [[magma-safe]] floodgates and mechanisms to effectively melt ice. Although [[ice]] may be melted by [[magma]] or other heat sources, it can be used to create buildings, workshops, and constructions that will never melt. Underground water will not freeze, but a well using it must never have been exposed to the sky; simply building a roof over it will not suffice. | |
| − | One of the first challenges presented by a freezing climate is the lack of [[water]] in any conveniently drinkable form. Along with trees, water may be the hardest resource to obtain. The ice chunks left behind while digging through ice cannot be melted into drinking water. There are several ways to approach a freezing area. One of them is embarking with a [[volcano]] in site, utilizing the natural obsidian surrounding it to create [[magma-safe]] floodgates and mechanisms to effectively melt ice. | ||
| − | + | == Cautions == | |
| − | |||
| − | |||
While channeling ice and magma, supervise your miners to ensure they are not encased in cooling magma or freezing ice. | While channeling ice and magma, supervise your miners to ensure they are not encased in cooling magma or freezing ice. | ||
Latest revision as of 03:05, 30 June 2026
v53.15 · v0.47.05 This article is about the current version of DF.Note that some content may still need to be updated. |
Water in Dwarf Fortress will freeze to become ice if the temperature is below 10000 °U and the tile is 'Above Ground'; 'Subterranean' tiles usually remain at a consistent temperature of 10015 °U , however, inside glaciers even 'Subterranean' tiles can get cold enough to freeze water.
Water level effects[edit]
Water at levels 1/7 to 3/7 freeze to become an ice floor. Water at level 4/7 or greater freezes to become an ice wall. Any ice wall will produce 7/7 water when melted, or can be mined for 1 boulder of ice.
This may be useful if embarking on a location with limited water and seasonal freezing, as if collecting the spring melt-water. One could expand a lake to 175% its original size (if 7/7 full) so it levels to 4/7, let it freeze then thaw, then drain the expansion to a deeper cistern. If the water in the original lake is preserved at 7/7, the process may be repeated each year.
Creature effects[edit]
Creatures on a water tile that freezes into an ice wall are instantly killed. Dwarves die with the message "<dwarf name> has been encased in ice". The ice wall must be melted or mined in order to access the corpses or their items.
Creatures, including dwarves and livestock, will take damage, and eventually die, from exposure to temperatures below 9901 °U (see [COLDDAM_POINT]), and clothes and armor do not prevent this, though they may slow the process.
Building effects[edit]
Constructing in or on a tile that freezes has mostly no problems (see below), floors placed on or in ice will stay there through melts and freezes.
Floor hatches will disassemble if covered by an ice wall. The hatches and any associated mechanisms survive the process, but will wash away once the ice melts.
Floor grates placed on water that freezes will be "uninstalled" come spring.
Melting[edit]
Ice can melt when the temperature rises as part of the natural cycle of seasons. Some biomes may be frozen all year round and others may never freeze. Ice can also be melted by proximity to magma. An ice tile with magma moving above or beneath it, or within 2 tiles on the same z-level, may cause the ice to melt (or will prevent water freezing in the first place); see properties of magma.
Climate[edit]
Freezing climates are the coldest, and water on them is typically in permafrost. Choosing to embark in one poses an interesting challenge and offers opportunities for substantial amounts of fun.
One of the first challenges presented by a freezing climate is the lack of water in any conveniently drinkable form. Along with trees, water may be the hardest resource to obtain. The ice chunks left behind while digging through ice cannot be melted into drinking water. There are several ways to approach a freezing area. One of them is to penetrate to the cavern levels, which may have water in liquid form. Another is embarking with a volcano in site, utilizing the natural obsidian surrounding it to create magma-safe floodgates and mechanisms to effectively melt ice. Although ice may be melted by magma or other heat sources, it can be used to create buildings, workshops, and constructions that will never melt. Underground water will not freeze, but a well using it must never have been exposed to the sky; simply building a roof over it will not suffice.
Cautions[edit]
While channeling ice and magma, supervise your miners to ensure they are not encased in cooling magma or freezing ice.
"Freezing" in other Languages 
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