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Editing v0.34:Dam
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An alternative method to this is to use a large number of pumps to move more water out of the river than can be replaced by the water flow. For a river with a width of 4 tiles, you will need <s> three on either side </s> four pumps spanning the river pumping it into channels or tunnels, ideally off the map, a waterfall, or somewhere where flooding will not be a concern. While the pumps are operating, it will be drained enough to build the dam. A little more mechanic intensive method is using nine pumps, four to pump where your floodgates will go, four to pump out places for your workers to stand up/downstream, and one to keep a ramp clear to retrieve the dwarves. This method has the advantage on not needing channels/tunnels saving that layer for future construction. | An alternative method to this is to use a large number of pumps to move more water out of the river than can be replaced by the water flow. For a river with a width of 4 tiles, you will need <s> three on either side </s> four pumps spanning the river pumping it into channels or tunnels, ideally off the map, a waterfall, or somewhere where flooding will not be a concern. While the pumps are operating, it will be drained enough to build the dam. A little more mechanic intensive method is using nine pumps, four to pump where your floodgates will go, four to pump out places for your workers to stand up/downstream, and one to keep a ramp clear to retrieve the dwarves. This method has the advantage on not needing channels/tunnels saving that layer for future construction. | ||
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If your dwarves are persistent enough you can also dig out a large chamber under the river at Z-1, channel out holes on both sides at Z0, and cover these holes with walled-in bridges. When you raise the bridges the water drops down; when you lower them it starts flowing again. This avoids the 'infinite hole' bug that can result if you use collapses to punch holes in the bottom of brooks. | If your dwarves are persistent enough you can also dig out a large chamber under the river at Z-1, channel out holes on both sides at Z0, and cover these holes with walled-in bridges. When you raise the bridges the water drops down; when you lower them it starts flowing again. This avoids the 'infinite hole' bug that can result if you use collapses to punch holes in the bottom of brooks. | ||
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One other possible method of disposing of that water is channelling it to an [[aquifer]] lower than the river, it will absorb the pressurized water. The best part of this method is that the [[aquifer]] will likely be almost directly under the river, minimizing the needed construction. | One other possible method of disposing of that water is channelling it to an [[aquifer]] lower than the river, it will absorb the pressurized water. The best part of this method is that the [[aquifer]] will likely be almost directly under the river, minimizing the needed construction. | ||
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===The Dam=== | ===The Dam=== | ||
[[Image:Dam2.JPG|left]] | [[Image:Dam2.JPG|left]] | ||
− | After your dam has been completed and looks something like the image, you can expect water to just stop flowing UNLESS there is a waterfall. If that is the case, the water will just flow around it after flooding a fair amount of space around it. If you messed up while making a magma dam and permanently obstructed the edge of the map, you can expect | + | After your dam has been completed and looks something like the image, you can expect water to just stop flowing UNLESS there is a waterfall. If that is the case, the water will just flow around it after flooding a fair amount of space around it. If you messed up while making a magma dam and permanently obstructed the edge of the map, you can expect the entire world to flood up to the point where water enters. |
===Actually Building=== | ===Actually Building=== |