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Editing v0.31:River
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| − | There are five different kinds of surface rivers in dwarf fortress. These are major rivers, rivers, minor rivers, streams and brooks. For most purposes all of these will be referred to as simply '''rivers''' and '''brooks''' since the only real difference between the first four types is their appearance in the regional map, their width, and possibly their rate of flow. Brooks being the smallest type of surface river do have the unique property that they can be crossed safely without needing to | + | There are five different kinds of surface rivers in dwarf fortress. These are major rivers, rivers, minor rivers, streams and brooks. For most purposes all of these will be referred to as simply '''rivers''' and '''brooks''' since the only real difference between the first four types is their appearance in the regional map, their width, and possibly their rate of flow. Brooks being the smallest type of surface river do have the unique property that they can be crossed safely without needing to {{l|swimming|swim}} or even get ones feet wet. |
== Rivers == | == Rivers == | ||
| − | In fortress or adventure mode '''rivers''' can be seen as dark blue {{Tile|≈|1:7:0}} and {{Tile|~|1:7:0}} tiles stretching from one edge of the map to another. Rivers come in a variety of sizes from the major rivers spanning as wide as 40 tiles to tiny '''brooks''' which are only four tiles wide. River tiles will also be constantly blinking which indicates that the water has | + | In fortress or adventure mode '''rivers''' can be seen as dark blue {{Tile|≈|1:7:0}} and {{Tile|~|1:7:0}} tiles stretching from one edge of the map to another. Rivers come in a variety of sizes from the major rivers spanning as wide as 40 tiles to tiny '''brooks''' which are only four tiles wide. River tiles will also be constantly blinking which indicates that the water has {{l|flow}}. Rivers are an effectively unlimited source of water flowing from the upstream side and leaving the map at the downstream. |
| − | To determine which direction downstream is you can carefully look at the ends of the river using {{k|k}} to look for tiles that have less than 7/7 water in them. This low point is the downstream side of your river. You may need to remove a small amount of water from the river before you can identify which end is the downstream side. Alternatively you can also turn on SHOW_FLOW_AMOUNTS in your init.txt file which will reveal the depth of water without needing to use {{k|k}} to look. This will however remove your ability to see | + | To determine which direction downstream is you can carefully look at the ends of the river using {{k|k}} to look for tiles that have less than 7/7 water in them. This low point is the downstream side of your river. You may need to remove a small amount of water from the river before you can identify which end is the downstream side. Alternatively you can also turn on SHOW_FLOW_AMOUNTS in your init.txt file which will reveal the depth of water without needing to use {{k|k}} to look. This will however remove your ability to see {{l|flow}}. A dwarfier method would be to kill something, gets its blood in the river and observe the direction of its movement. |
| − | Rivers cannot be crossed without first building a bridge, drawbridge, or floor across them. Dwarves finding themselves unfortunate enough to be in a river are likely to be quickly swept downstream and drowned unless they are exceptionally good at | + | Rivers cannot be crossed without first building a bridge, drawbridge, or floor across them. Dwarves finding themselves unfortunate enough to be in a river are likely to be quickly swept downstream and drowned unless they are exceptionally good at {{l|swimming}}. |
== Brooks == | == Brooks == | ||
| − | + | {{l|brook|Brooks}} are the smallest type of {{l|river}}. They have a unique property that allows {{l|creatures}} and {{l|wagon|wagons}} to travel across them without {{l|swimming|swimming}}. Walking across a brook will not even get your feet '''wet'''. A brook can easily be identified by the white and cyan {{Tile|≈|3:7:1}} and {{Tile|~|3:7:1}} tiles on the surface. Like a river these tiles will be constantly blinking indicating that they have {{l|flow}}. These lighter colored tiles are a special kind of floor tile which acts much like a floor grate. Fluids, such as {{l|magma}} and water itself, will fall through it, and fisherdwarves can stand on the surface to fish. | |
| − | + | {{l|Water wheel|Water wheels}} will not function if placed directly on a brook. In order to use a water wheel on a brook, you must dig a {{l|channel|channel}} through the {{l|floor|surface}} of the brook, which removes the special floor tile which makes the surface of a brook walkable. Once this is done a water wheel may be placed normally. In all other respects brooks function exactly like any other river. | |
== Rivers in the regional map == | == Rivers in the regional map == | ||
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[[Image:Watersystems01.jpg|298px|thumb|Different sorts of rivers in action; note that the labeled Brook is actually a Stream]] | [[Image:Watersystems01.jpg|298px|thumb|Different sorts of rivers in action; note that the labeled Brook is actually a Stream]] | ||
| − | '''Rivers''' are found on the surface of world maps. They vary in width and flow rate, some being wider than others. They often flow through deep canyons or just across the flat surface of a level. On levels with | + | '''Rivers''' are found on the surface of world maps. They vary in width and flow rate, some being wider than others. They often flow through deep canyons or just across the flat surface of a level. On levels with {{l|cliff|cliffs}}, {{l|waterfall|waterfalls}} may be found. |
| − | *Major rivers can be identified on the regional map by their double dark blue lines which easily identifies them from other types of rivers which only have single lines. Major rivers are the largest rivers, potentially exceeding 40 tiles in width. Usually they have minor river tributaries and can often feed large | + | *Major rivers can be identified on the regional map by their double dark blue lines which easily identifies them from other types of rivers which only have single lines. Major rivers are the largest rivers, potentially exceeding 40 tiles in width. Usually they have minor river tributaries and can often feed large {{l|lake|lakes}}. The massive amount of flowing water found in a major river may have a negative effect on your fps. |
*Rivers can be identified on the world map as dark blue and usually have tributaries of minor rivers. They can often be over 10 tiles wide. | *Rivers can be identified on the world map as dark blue and usually have tributaries of minor rivers. They can often be over 10 tiles wide. | ||
*Minor rivers are medium blue and usually have tributaries of streams. They are usually between 7 and 10 tiles wide. | *Minor rivers are medium blue and usually have tributaries of streams. They are usually between 7 and 10 tiles wide. | ||
*Streams show as light blue on the region map and often converge with other streams, and have some tributaries of brooks. They tend to be 4-6 tiles wide. | *Streams show as light blue on the region map and often converge with other streams, and have some tributaries of brooks. They tend to be 4-6 tiles wide. | ||
| − | *Brooks are not directly visible on the region map although they may be seen in the leftmost screen and also in the text at the right. They are the smallest flowing body of | + | *Brooks are not directly visible on the region map although they may be seen in the leftmost screen and also in the text at the right. They are the smallest flowing body of {{l|water|water}} that can be found in the game, being only 4 tiles wide. Brooks are unique in the fact that they can be crossed safely without needing to {{l|swimming|swim}} or even get ones feet wet. Brooks are very common - almost every tile around a stream or larger river will have a brook running through it. |
== Underground Rivers == | == Underground Rivers == | ||
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== Other Important Facts == | == Other Important Facts == | ||
| − | *Rivers contain an unlimited amount of water and cannot be drained like muddy pools. They can, however, be dammed if you can *temporarily* drain part of them to 1/7 or less for long enough to construct | + | *Rivers contain an unlimited amount of water and cannot be drained like muddy pools. They can, however, be dammed if you can *temporarily* drain part of them to 1/7 or less for long enough to construct {{l|construction|walls}} or install {{l|floodgate|floodgates}}. Despite being an unlimited source of water, river source tiles will only refill up to the level of the river's source - it will not overflow if you dam it up. This demonstrates one way to drain and dam a river: [http://mkv25.net/dfma/movie-196-draininganddammingamajorriver-i]. Another way to dam a river is to direct a lava flow into it, producing obsidian in the squares where it encounters water. |
| − | *Once dammed, a dry riverbed will refill when it rains, similar to a | + | *Once dammed, a dry riverbed will refill when it rains, similar to a {{l|murky pool}}.{{verify}} |
*A dammed river will cease to produce additional water once all of its tiles reach 7/7, even if the dam is subsequently opened. Once the water level near the river's source drops below 7/7, though, the river will start producing water again.{{verify}} | *A dammed river will cease to produce additional water once all of its tiles reach 7/7, even if the dam is subsequently opened. Once the water level near the river's source drops below 7/7, though, the river will start producing water again.{{verify}} | ||