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Editing 40d:Irrigation
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− | + | Irrigation is the process of making rocky ground suitable for [[farming]]. This is usually done by flooding it with [[water]]. Inside caves, [[rock]] cavern floor tiles that are covered with water instantly become muddy tiles, which you can then build farm plots on. There are many possible methods for getting the farm area muddy. | |
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− | + | ==Dryland farming: farming without irrigation== | |
+ | Some locations have layers of [[soil]] a few z-levels thick. It is not necessary to irrigate [[soil]] in order to grow crops on it; it is possible to build a farm plot directly on any soil tiles, although the dwarven crops such as [[plump helmet]]s can only be grown in a [[subterranean]] plot. In lowland areas, a farm plot built on the surface can be used to grow outdoor crops such as [[prickle berry|prickle berries]]. | ||
− | + | ==Reservoir irrigation== | |
+ | Dwarf Fortress uses realistic water dynamics, including measures of [[water depth]]. A depth of 7 is full, depths of 1 will evaporate, leaving the stone wet and thus suitable for farming. Your goal in irrigation is to get a section of ground to be 1's. | ||
− | + | The reservoir method involves building a small reservoir between two [[floodgate|floodgates]] and a farming chamber at least 7 times as large as the reservoir. a reservoir of 10 tiles, for instance, can water a 7x10 chamber effectively. Water is let into the reservoir by lowering, then raising one floodgate. The other floodgate then releases the water into the farming chamber. It spreads around, then evaporates after becoming 1 deep. | |
− | + | It is also possible to achieve the same result with a natural pond using the same technique. Doing so is easier in the short term but it is not advised if you want to keep replenishing your reservoir for other uses, such as [[well]](s), for natural ponds have a very finite amount of water available. On particular maps, natural ponds can replenish themselves at the beginning of each spring. | |
− | == | + | ==Oldschool irrigation== |
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− | + | # Dig from the [[farm plot]] to any source of water, but keep a single tile of [[wall]] between the newbuilt [[channel]] and the water. Also, [[dig]] a passage from the plot towards lower ground that'll serve as the water drain. | |
+ | # Build a [[door]] or [[floodgate]], and three [[mechanism]]s. | ||
+ | # Place the door in the channel. The idea is that it'll block the water from coming through when closed. | ||
+ | # Build a [[lever]] and link it to the door or floodgate. | ||
+ | # Pull the lever so the door opens. Send a miner to dig that last wall keeping the water from rushing in. Alternatively, have the miner dig a channel on the last wall from the Z-level above. The miner will dig out the wall without actually having to stand in the way of the water. | ||
+ | # Ideally, here the miner will run like hell. The water is actually fairly slow. | ||
+ | # Use the lever to close the channel once you feel you've got enough water to spread over the area. | ||
+ | # Wait for water to drain out to at least 1/7 per tile. You can use grates and hatches to speed up this process. | ||
+ | # Make farm. | ||
+ | # Harvest [[crops]] and produce [[food]]/other materials | ||
+ | # Profit! | ||
− | + | ==Pond irrigation== | |
+ | Dig a farm room, and dig a channel one Z-level above it, creating a hole down into the farm room. Create a [[zone]] on the hole, and make it a pond. Your dwarves will attempt to fill it with water carried in buckets. As they dump water in, it will muddy the farm room floor. After it has been sufficiently muddied, disable or remove the pond zone until you need to irrigate it again. Dwarves can build farm plots in 1 unit deep water. | ||
− | + | NOTE: Even though it works, this is probably the slowest way to irrigate a room since dwarves only carry 1 unit of water per trip. Especially if you don't have a more than one or two idle dwarves and buckets, or if the water source is far away. It also probably wouldn't work very well on larger farm areas. | |
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− | + | NOTE: This probably doesn't work if your farm room is directly under the surface, not for [[plump helmets]] anyway. It's best to have your farm room and the above pond-room both be dug in a cave. | |
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− | + | ==Footstep irrigation== | |
+ | As your dwarves walk through wet ares, they drag [[mud]] around with them. This mud can be farmed on. Through a little creativity, you can get sections of heavily-trafficked areas wet near your farms and your dwarves will irrigate them for you. | ||
+ | This would not work in later versions, because the mud and blood spreading are temporally disabled {{version|0.27.169.33g}} | ||
− | + | ==Wave irrigation== | |
+ | Although seawater is unfit for carrying to your farm in a bucket, areas muddied by seawater seem to be farmable. My favorite method of achieving this is building a farm room under a beach and making a hole in its roof, closable with a hatch, to let waves in. | ||
− | + | [[Category:Agriculture]] | |
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