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Editing 40d:Irrigation
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'''Irrigation''' is the process of making rocky ground suitable for [[farming]]. This is done by [[flood]]ing it with [[water]]; when the water evaporates, the tiles are labeled as "muddy". This is also called '''muddying''' the floor, as the dry floor tile is then a "muddy <type of stone> floor". Inside [[cave]]s, [[rock]] cavern floor tiles that are covered with water instantly become muddy tiles, which you can then build [[farm plot]]s on. | '''Irrigation''' is the process of making rocky ground suitable for [[farming]]. This is done by [[flood]]ing it with [[water]]; when the water evaporates, the tiles are labeled as "muddy". This is also called '''muddying''' the floor, as the dry floor tile is then a "muddy <type of stone> floor". Inside [[cave]]s, [[rock]] cavern floor tiles that are covered with water instantly become muddy tiles, which you can then build [[farm plot]]s on. | ||
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There are several methods for getting the water onto (and then off of) the floor tiles. Dwarf Fortress uses reasonably-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 1/7s, so it will evaporate to muddy. Usually it can't be avoided that part of the section will be flooded with higher levels, but water will disperse and eventually evaporate. If the water level gets too high and no 1/7 tiles exist (or not for long, replaced by shifting 2/7 tiles), the water will not evaporate. | There are several methods for getting the water onto (and then off of) the floor tiles. Dwarf Fortress uses reasonably-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 1/7s, so it will evaporate to muddy. Usually it can't be avoided that part of the section will be flooded with higher levels, but water will disperse and eventually evaporate. If the water level gets too high and no 1/7 tiles exist (or not for long, replaced by shifting 2/7 tiles), the water will not evaporate. | ||
− | [[Smooth]]ed floors that are muddied will remain smooth, however if/when [[shrub]]s or [[tower | + | [[Smooth]]ed floors that are muddied will remain smooth, however if/when [[shrub]]s or [[tower cap]]s grow, that tile will then revert to a rough stone floor tile. Constructed floors that have been muddied will not prevent the growth of shrubs or tower caps. |
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==Indoor/Underground Irrigation == | ==Indoor/Underground Irrigation == | ||
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(* Note: ''Any'' type of [[soil]] is the same for this purpose in Dwarf Fortress, so you can build farm plots on sand, mud, clay, whatever.) | (* Note: ''Any'' type of [[soil]] is the same for this purpose in Dwarf Fortress, so you can build farm plots on sand, mud, clay, whatever.) | ||
− | Once an underground river is discovered, [[Tower | + | Once an underground river is discovered, [[Tower cap]]s and bushes will ''also'' grow on any unimproved (i.e., non-irrigated, non-farm plot) underground soil. Irrigating is recommended for improving tower cap farms. |
=== Pump Irrigation === | === Pump Irrigation === | ||
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Dig a channel tile down from a tunnel, preferably near a well or other water source, and dig a farm room below (and preferably around) the channel tile on the lower level. Create a [[zone]] on the channel tile above, and make it a pond. Your dwarves will automatically attempt to fill it with water carried in buckets. As they dump water in, it will muddy the floor on the lower level, spreading out to surrounding tiles once the second bucket load drops. After it has been sufficiently muddied, disable or remove the pond zone. Since dwarves can build farm plots in 1 unit deep water, you can place your plot right away once all desired tiles are covered. | Dig a channel tile down from a tunnel, preferably near a well or other water source, and dig a farm room below (and preferably around) the channel tile on the lower level. Create a [[zone]] on the channel tile above, and make it a pond. Your dwarves will automatically attempt to fill it with water carried in buckets. As they dump water in, it will muddy the floor on the lower level, spreading out to surrounding tiles once the second bucket load drops. After it has been sufficiently muddied, disable or remove the pond zone. Since dwarves can build farm plots in 1 unit deep water, you can place your plot right away once all desired tiles are covered. | ||
− | Due to the low demand in infrastructure, items and water management, this is one of the fastest and the safest way to irrigate a floor. Dwarves carry 1/7 unit of water per trip. It's slower if the water source is far away, but still very manageable compared to digging an | + | Due to the low demand in infrastructure, items and water management, this is one of the fastest and the safest way to irrigate a floor. Dwarves carry 1/7 unit of water per trip. It's slower if the water source is far away, but still very manageable compared to digging an aquaeduct and building floodgates or even pumps. |
If you need to irrigate a larger area, larger than 3x3 - depending on distance to the water source - you may need to dig several channel tiles. The method also works great with constructed staircases for creating outdoor farm plots where there's an occasional stone in the ground. | If you need to irrigate a larger area, larger than 3x3 - depending on distance to the water source - you may need to dig several channel tiles. The method also works great with constructed staircases for creating outdoor farm plots where there's an occasional stone in the ground. | ||
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===Easier, safer irrigation=== | ===Easier, safer irrigation=== | ||
− | Here's a relatively safe and simple irrigation plan. As shown it's set up for an underground [[tower | + | Here's a relatively safe and simple irrigation plan. As shown it's set up for an underground [[tower cap]] farm, but can easily be adapted to any level, surface or deep underground. |
This is a passive system - it's never connected to the river, so it won't do anything unless manned by a dwarf, and it doesn't need any levers or floodgates to work - or to ''stop'' working. Unless you forget about it, no [[flood]]ing should occur - and even if you do and it does, it's foolproof to stop. | This is a passive system - it's never connected to the river, so it won't do anything unless manned by a dwarf, and it doesn't need any levers or floodgates to work - or to ''stop'' working. Unless you forget about it, no [[flood]]ing should occur - and even if you do and it does, it's foolproof to stop. | ||
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=== Underground River Irrigation === | === Underground River Irrigation === | ||
− | Underground rivers are often what makes living in freezing climates possible, because they don't freeze over. Its very easy to tap one if you know what you're doing. Once you've located it, pick out a good spot for your farm room and dig it out. Make sure you're on the same level as the water; that is, where the actual water is located, not where the 'Open Space' is. Channel out one tile in the farm room and replace it with a floor hatch. Dig a narrow tunnel to the underground river and put a wall grate and a floodgate in it. Link the floodgate and hatch to | + | Underground rivers are often what makes living in freezing climates possible, because they don't freeze over. Its very easy to tap one if you know what you're doing. Once you've located it, pick out a good spot for your farm room and dig it out. Make sure you're on the same level as the water; that is, where the actual water is located, not where the 'Open Space' is. Channel out one tile in the farm room and replace it with a floor hatch. Dig a narrow tunnel to the underground river and put a wall grate and a floodgate in it. Link the floodgate and hatch to seperate levers. Dig one level down and dig a drainage shaft from the tile below the hatch to the point where the river 'drops'; you'll see a 5x5 area of 'Open Space'. When you are ready, dig a small tunnel and channel out the floor so you breach the river below and send it into your grate and floodgate. Open the floodgate to water your crops, close it when you're done and open the hatch to drain. |
− | NOTE: The grate is necessary to filter out nasty creatures that might otherwise come in with the water | + | NOTE: The grate is necessary to filter out nasty creatures that might otherwise come in with the water. |
An easier method is to find a location where the cave river falls for more than three z levels and simply build a screw pump to suck the falling water from midair. | An easier method is to find a location where the cave river falls for more than three z levels and simply build a screw pump to suck the falling water from midair. | ||
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*it would seem this only affects the non-native stone of a layer, and changes it into the native stone, it definitely does not turn it into the rock type in the layer beneath if it is another non-native stone. (non-native means stone like orthoclase or microcline) | *it would seem this only affects the non-native stone of a layer, and changes it into the native stone, it definitely does not turn it into the rock type in the layer beneath if it is another non-native stone. (non-native means stone like orthoclase or microcline) | ||
− | + | [[Category:Agriculture]] |