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Editing v0.31:Irrigation
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− | {{ | + | {{av}} |
+ | {{Quality|Exceptional}} | ||
− | Irrigation is the process of adding water to | + | Irrigation is the process of adding water to an underground or rock tile so that it can be {{L|farm plot|farmed}}. This is done by flooding the tile with {{L|water}}. Any amount of water will suffice but the less water, the better — farms cannot be built on any square containing water of {{L|water depth|2/7 or deeper}}. Tiles of depth 2/7 will flow into nearby tiles until the area is 1/7 if possible, so this is only an issue if deep water is placed in an enclosed area. |
− | + | Once the water has evaporated or been allowed to flow away, the tile will remain muddied unless a {{L|construction}} is built over it. Viewing the tile will cause it to display 'a pile of mud', 'a small pile of mud', or 'a dusting of mud' in its contents. | |
+ | |||
+ | Farms must be built on muddy tiles. Farms cannot be built on underground tiles (rock or soil) unless those tiles have been muddied. This is not the case for above ground farming, where you can {{L|gather plants}} and {{L|Still|brew}} them for alcohol or even farm in above ground soil with the gathered seeds. But underground farming is a generally quicker, safer and more reliable (and dwarven) way to gain {{L|food}} and {{L|alcohol}}. Plus, you can only embark with seeds for underground crops. So, it is useful to know how to irrigate with as little investment in workshops and mechanisms as possible. | ||
Farms can be built on unsuitable ground but doing so will display a warning message. If even a single square of the farm is not irrigated, it will be unusable. | Farms can be built on unsuitable ground but doing so will display a warning message. If even a single square of the farm is not irrigated, it will be unusable. | ||
− | + | {{L|Magma}}, for obvious reasons, cannot be used to irrigate{{verify}} but can cause {{L|fun}}. | |
== Easy Irrigation == | == Easy Irrigation == | ||
− | One obstacle to early irrigation is the time required to build mechanisms (which cannot be taken when | + | One obstacle to early irrigation is the time required to build mechanisms (which cannot be taken when {{L|embark|embarking}} and take time to set up). They can also be daunting to newer players and mistakes can result in floods or famine - common sources of {{L|fun}}. The methods below are designed to work without mechanisms. |
=== via Murky Pool=== | === via Murky Pool=== | ||
− | Most areas contain | + | Most areas contain {{L|murky pool|murky pools}}, which provide one of the quickest, simplest methods of starting a farm. Digging out an area near a murky pool and draining the pool into it is an easy way to make the ground muddy and farmable. |
− | You should first locate a pool near where you wish to put the farm. While any finite water source works, you need to drain the excess water somehow or allow it to [[evaporate]], so smaller pools are usually preferable. Once you find a good location, dig out the room and dig a tunnel that ends with only 1 tile between it and the pool. If you want to simply allow the water to evaporate after irrigation, the floorspace in the farm should | + | You should first locate a pool near where you wish to put the farm. While any finite water source works, you need to drain the excess water somehow or allow it to [[evaporate]], so smaller pools are usually preferable. Once you find a good location, dig out the room and dig a tunnel that ends with only 1 tile between it and the pool. If you want to simply allow the water to evaporate after irrigation, the floorspace in the farm should about about 5 or 6 times that of the pool. Otherwise, you can dig another room out underneath the farm via stairs placed on the opposite side from the pool to drain the water after irrigation. |
Finally, channel out the one tile between the tunnel and the pool and the water will flow in. | Finally, channel out the one tile between the tunnel and the pool and the water will flow in. | ||
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:* If the dug area is too large, some tiles will be left unmuddied. While muddying these squares is a lot of trouble and arguably not worth it, these tiles are perfect for seed stockpiles. | :* If the dug area is too large, some tiles will be left unmuddied. While muddying these squares is a lot of trouble and arguably not worth it, these tiles are perfect for seed stockpiles. | ||
− | :* If the dug area is too small, there will be at least one tile of 2/7 depth. Until some of the water | + | :* If the dug area is too small, there will be at least one tile of 2/7 depth. Until some of the water {{L|evaporation|evaporates}} (which will still happen, albeit slower, in the 1/7 tiles), you won't be able to farm it. However, unless you've drastically miscalculated, dwarves will be able to wade through the water and dig more tiles to expand the farm to the correct size. |
=== via Buckets=== | === via Buckets=== | ||
− | It is possible to irrigate an area by carrying water in | + | It is possible to irrigate an area by carrying water in {{l|buckets}} from virtually any source, such as a {{L|brook}}, a {{L|river}}, or a good-sized {{L|murky pool}}. |
+ | |||
+ | To do this, find a subterranean area where you plan to locate your farm. Tunnel two z layers of the same size, as the upper z level will be the irrigation gallery for our farms. The irrigation will fall down to the desired tiles on the z-level below, creating our mud for farming. | ||
− | + | Note that if you carve the channels on the surface, the below farm will be listed as Light and Above Ground, restricting certain crops. | |
− | + | {{L|channel|Channel}} the upper gallery in the following pattern: | |
− | |||
++++ | ++++ | ||
+..+ legend | +..+ legend | ||
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++++ + = floor | ++++ + = floor | ||
− | + | (If you haven't {{L|Dig|dug}} the farm level by this point, you will have down ramps in your channeled tiles. Tunnel out the z-level below, as that is where your farms will be.) | |
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− | + | {{L|activity zone|Zone}} the channeled tiles on the upper gallery as {{L|pond|ponds}}. If you designate each channeled tile individually as a pond, you can quickly muddy your planned farm tiles as only one dwarf can fill a pond activity zone, and you can control the spread of the water precisely. As each pond tile gets its first filling of water (bringing it to 1/7 depth), dezone that pond tile, and this will result in an exact match of mud on the floor below. | |
− | + | This process creates "a dusting of mud" on the floor below, which is all that is needed to plant underground crops. Place your farm plots over just these muddied tiles. | |
− | + | Lower floor will look like the following: | |
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++++ | ++++ | ||
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++++ + = floor | ++++ + = floor | ||
− | You can vary the basic square to any rectangle, so long as | + | You can vary the basic square to any rectangle, so long as you keep the rectangle 2 wide or 2 long, and this will result in quick and efficient muddy tile creation on the floor below. |
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− | + | If you accidentally add too much water, you can wait for some of the water to evaporate or for it to spread to nearby tiles. However, as long as you keep an eye on the dwarves and dezone that pond tile on the upper gallery as soon as a dwarf dumps a bucket of water, you shouldn't have this occur. | |
− | + | Other ways to easily create an upper irrigation gallery and a lower resulting farm level are possible. This is left up to the fortress designers to experiment with. | |
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− | == | + | == Irrigation via Corkscrew Pump == |
− | This method ranks somewhere between easy and complex irrigation as it's set up relatively quickly while not necessarily looking as cool as the complex method. It needs a | + | This method ranks somewhere between easy and complex irrigation as it's set up relatively quickly while not necessarily looking as cool as the complex method. It needs a pump and a river/brook in a chasm though. A lake will do well too. |
You start by digging out a tunnel of one tile and a rectangular room near the river exactly one level above the river. The floor of the room has to be at the same level as the surface of the river. It doesn't have to be walled on the side of the river as you'll need some open space for the water to get out. If you have dug it farther away from the river, you should dig another tunnel from the room to the water source so that the pumped in water can get out. | You start by digging out a tunnel of one tile and a rectangular room near the river exactly one level above the river. The floor of the room has to be at the same level as the surface of the river. It doesn't have to be walled on the side of the river as you'll need some open space for the water to get out. If you have dug it farther away from the river, you should dig another tunnel from the room to the water source so that the pumped in water can get out. | ||
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You should also consider a bridge for the farmers to reach the farming plots. The bridge at the exit point of the water should be long enough so that the water won't flow over it and damp the ground at its far end. You can do without that second bridge though as you can deconstruct the pump after the irrigation. So there is already a passage for the farmers to get to the plots. | You should also consider a bridge for the farmers to reach the farming plots. The bridge at the exit point of the water should be long enough so that the water won't flow over it and damp the ground at its far end. You can do without that second bridge though as you can deconstruct the pump after the irrigation. So there is already a passage for the farmers to get to the plots. | ||
− | Good luck! Here's a diagram of this method | + | Good luck! Here's a diagram of this method... |
{{diagram|spaces=yes|\ | {{diagram|spaces=yes|\ | ||
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▓▓▓▓▓[#00F]~[#00F]≈[#00F]~[#00F]≈[#00F]~ | ▓▓▓▓▓[#00F]~[#00F]≈[#00F]~[#00F]≈[#00F]~ | ||
}} | }} | ||
+ | |||
+ | == Complex Irrigation == | ||
+ | The following method of irrigation takes longer to build, but it is more reliable, looks cooler and of course it's more {{L|fun}}. | ||
=== via Reservoir === | === via Reservoir === | ||
[[Image:Irrigation1.png|thumb|right|A reservoir system which provides enough water for 8 fields. Upper level]] | [[Image:Irrigation1.png|thumb|right|A reservoir system which provides enough water for 8 fields. Upper level]] | ||
[[Image:Irrigation2.png|thumb|right|The irrigated bottom level.]] | [[Image:Irrigation2.png|thumb|right|The irrigated bottom level.]] | ||
− | First you need a sufficient source of | + | First you need a sufficient source of {{L|water}}. The best would be a {{L|brook}} or {{L|river}}, but it is also possible to use a bigger murky pool (it depends on how many fields you want to irrigate). |
For every 7x7 farm plot you need | For every 7x7 farm plot you need | ||
− | :* a | + | :* a floodgate |
− | :* a | + | :* a hatch cover |
− | :* 4 | + | :* 4 mechanisms (for linking) |
− | :* a | + | :* a door |
You also need | You also need | ||
− | :* 2 Mechanisms for the | + | :* 2 Mechanisms for the levers |
:* at least one additional door (if you have enough time to set up a wall or floodgate as well) | :* at least one additional door (if you have enough time to set up a wall or floodgate as well) | ||
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{{Farming FAQ}} | {{Farming FAQ}} | ||
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