Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[dominusnovus]

Take a river gorge with a waterfall falling into it.  Build a dam up the gorge, after the waterfall falls into the river.  Is the game smart enough to keep the raised water from flowing out the upstream side of the river?

[GreatWyrmGold]

I think this is in the wrong subforum.

For now, it won't affect anything beyond your fortress.

[MrWiggles]

I think I recall couple of folks using a series of forts to build bridges and to build artificial rivers, and the game can keep track of that information.

[dominusnovus]

I think this is in the wrong subforum.

For now, it won't affect anything beyond your fortress.

Thats what I get for posting right before going to bed... Just spent 10 minutes trying to figure out where my post went, while looking in the questions forum.

[dominusnovus]

I think I recall couple of folks using a series of forts to build bridges and to build artificial rivers, and the game can keep track of that information.

Which would indicate that the game *is* smart enough to not drain my dwarf-made reservoir upstream?

[MrWiggles]

I think so. I mean, Beaver Dams in world gen can alt river flow.

[Igfig]

http://dwarffortresswiki.org/index.php/Dam

Your dam won't cause the river to overflow.

Unless you pump water out of the reservoir and then back in. That might do it.

[nanomage]

http://dwarffortresswiki.org/index.php/Dam

Your dam won't cause the river to overflow.

Unless you pump water out of the reservoir and then back in. That might do it.

Actually. this very page says that the river will overflow if dammed below the waterfall. Specifically, it says the upper level is the level to which the river will rise.

[Igfig]

Yes. It will fill up to exactly the height of the waterfall. It will not, however, overflow the upper banks and drain upstream, which I believe is what the OP was asking about.

Also,

I think this is in the wrong subforum.

For now, it won't affect anything beyond your fortress.

Thats what I get for posting right before going to bed... Just spent 10 minutes trying to figure out where my post went, while looking in the questions forum.

You can move your threads, you know. The Move Topic button is in the bottom-left corner of the page.

[dominusnovus]

Yes. It will fill up to exactly the height of the waterfall. It will not, however, overflow the upper banks and drain upstream, which I believe is what the OP was asking about.

Also,

I think this is in the wrong subforum.

For now, it won't affect anything beyond your fortress.

Thats what I get for posting right before going to bed... Just spent 10 minutes trying to figure out where my post went, while looking in the questions forum.

You can move your threads, you know. The Move Topic button is in the bottom-left corner of the page.

Good to know!  Never saw that feature on any forums I've been on before.  Very handy!

And to clarify, here's specifically what I was asking:

Stream A empties into River B through a nice tall waterfall.  You dam River B after Stream A falls into it.  The rules for pressure state that the river will fill up to the level of the waterfall.  However, is it possible that the river would drain out the upstream end of River B, which is below the level of the waterfall?

[GreatWyrmGold]

Probably.
There's a few ways to depressurise water, I advise the diagonal flow method.

[Triaxx2]

It should, provided the map exit tiles for River B are not water generating tiles.