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[whiterook6]

Hi. It says in the wiki under floodgates that I shouldn't place a floodgate in an already flooded area. How do I block an above-ground river for a while, so I can rechannel it and dig out some rubies?

[Enzo]

I believe the only answer is screwpumps. Lots of screwpumps.
http://www.dwarffortresswiki.net/index.php/Screw_pump
Never bothered trying it to scrape out 3 or 4 squares of jewel/metal, but I guess it might be worth it for rubies.

EDIT : Also, if you manage to block it with floodgates, that sucker'll overflow. I guess you could channel out a giant reservoir to buy yourself some time.

[Argonnek]

You could probably dig a channel to divert water flow and build floodgates and pray that the water uses the channels

[Overdose]

magma solves everything

well, except maybe more magma, or fire imps

dump some magma into the river, then water onto the magma

[Aspgren]

magma solves everything

well, except maybe more magma, or fire imps

dump some magma into the river, then water onto the magma

Does he really need 2 parts water?

[Enzo]

dump some magma into the river, then magma onto the magma

Fix'd.

[Aldaris]

Rivers don't overflow as long as the place where it enters the map isn't above the z-level where you block the river.

[Albedo]

Check the wiki, under "dam".

[Vattic]

If you had enough dwarves and many many buckets you could stop the flow by dwarf power.

[MrWiggles]

How do you check elevation when aren't on the embark screen?

[Kidiri]

If you block the river at least one z-level under where it enters the map, it'll overflow.

Code: [Select]

~~~~~~
   |~~X___

~~~X
   |___

~ : water
| : wall
X : floodgate/door
_ : floor


[Shadowgandor]

Kinda offtopic but does anyone know if blocking a river has any effect on the rest of the world? Let's say I channeled a river into a chasm and then abandon the map. If I would follow the river on the world map, would it be drained now?

[Overdose]

magma solves everything

well, except maybe more magma, or fire imps

dump some magma into the river, then water onto the magma

Does he really need 2 parts water?

oh, i only said the second part of water to cool off any excess lingering magma.

maybe it's just me, but it tends to get everywhere when i play with it, and i like to keep some water around just in case i accidentally pump some magma into my legendary champion's quarters and decide they don't need to die at that particular moment.

[Village_Idiot]

magma solves everything

well, except maybe more magma, or fire imps

dump some magma into the river, then water onto the magma

Does he really need 2 parts water?

oh, i only said the second part of water to cool off any excess lingering magma.

maybe it's just me, but it tends to get everywhere when i play with it, and i like to keep some water around just in case i accidentally pump some magma into my legendary champion's quarters and decide they don't need to die at that particular moment.

I agree, they look a lot nicer encased in an obsidian block, stops the nasty miasma too

[Vattic]

Kinda offtopic but does anyone know if blocking a river has any effect on the rest of the world? Let's say I channeled a river into a chasm and then abandon the map. If I would follow the river on the world map, would it be drained now?

Unfortunately local changes don't effect the world like this currently, I'm not certain if Toady has ever said it will but for the sake of completeness I'd like to see it. You could really upset a human castle by stopping their water supply for example.

Oh and considering how during world gen civs can deforest areas I could imagine a fortresses effect on the world on a whole might increase as the game gets updated.