Dwarf Fortress Wiki - User contributions [en]

v0.31:Gremlin

2010-04-03T22:22:14Z

FlyingBishop: Created page with 'Cave dwelling raider?'

Cave dwelling raider?

40d Talk:River

2009-10-15T22:45:52Z

FlyingBishop:

I think the image should be edited... the light blue rivers are streams, not brooks. Brooks are actually invisible on the region map, only visible on local. Only a minor issue though, but it can cause confusion. [[User:Lightning4|Lightning4]] 16:49, 16 November 2007 (EST)
===River Mechanics===
I want to clean up the "other facts" section an make it a little more organized. I recently dammed a river to build the entrance to my fortress in the middle of the river, and discovered several things that the article didn't quite explain (I updated the language to clarify it, but it's still a little disorganized.)
Here are the important things:
*River source tiles function essentially like aquifer tiles. Further experimentation should try to see if they have a greater refill rate or not.
*Also like aquifer tiles, river source tiles cannot provide enough pressure to rise above the level they are on.
*A river, like an aquifer, can absorb an unlimited amount of water.
These three facts taken together lead to a significant exploit. If you build a solid wall of pumps pumping against the current, the river can actually be drained back into itself. I did this with a river in a sunken channel, so water draining off to the sides wasn't an issue, but the water drained back into the river within 6 tiles (on a 20 tile wide river.) It therefore follows that very short walls on both sides of the river could easily be built to contain the water until it drains back in on another map.
If you don't want to use this exploit, it takes a little more work, but you can use the same basic structure to divert the river into an aquifer if you have one.[[User:FlyingBishop|FlyingBishop]] 22:44, 15 October 2009 (UTC)

===2967067655===

The "cave river" in seed 2967067655 is a short segment enclosed in solid rock, that comes from nowhere and "falls away" into open space at both ends - open space that doesn't extend to the level below. Is this typical of 0.27.169.33? If so, I'll have to put all my cave river plans off to a future version. [[User:Kidinnu|Kidinnu]] 09:54, 14 November 2007 (EST)
:That sounds very strange. The cave rivers I've seen are sourced from a "mysterious area" and usually either continue off the map or fall off the bottom. They also tend to go through several lowerings of their elevation. Are you sure you fully explored it? [[User:VengefulDonut|VengefulDonut]] 10:03, 14 November 2007 (EST)

I don't know where this should be mentioned, but there is a huge difference on my machine between FPS on maps with brooks and maps with rivers. I've got a 3.4ghz and 2 gig ram, and my FPS on a map with a river drops to 15-20 right off the bat, where it stays in the high 50's until 30-40 dwarves with only a brook. -- unsigned, but written by Gotthard, according to page history.

I added a bit about temporarily draining and permanently damming rivers and linked to a movie I recorded of doing just that. I think there are ways that would be easier on the dwarves and less micromanagey - one way, perhaps, may be to blast a 3-wide section of the river floor, instead of a 1-wide one, and then build floors in the middle column, and then build floodgates on top of those - that should keep the pesky backflow (which made installing the floodgates so arduous) from interfering with the damming. --[[User:SL|SL]] 00:28, 30 November 2007 (EST)

===="Cave river"?====
Is there anywhere in the game that these are called "cave rivers"? Or is this purely from this discussion?--[[User:Albedo|Albedo]] 06:33, 30 May 2009 (UTC)

== Draining brooks ==

I made following experiment:

*1. Built a bridge over brook, the brook flowed from left to right
*2. Built walls for the bridge
*3. channeled under right wall
*4. I then removed floors between walls of the bridge so that walls would fall in the brook

Purpose of this experiment was to drain the river. I made two walls to see what happens when I drop wall on the brook tile, and when I drop walls on brook tile that has been dug out. I was expecting to see my left wall intact on the brook, like if I had built the wall right on top of brook tile. And to see my right wall intact at the bottom of the brook where I had channeled out the brook.

Setting, before removing any parts of the bridge.
{| style="border-spacing: 0"
|-
|{{FFF}}
|{{RT|Z|#000|#FFF}}
|{{FFF}}
|{{RT|-|#000|#FFF}}
|{{RT|1|#000|fff}}
|{{FFF}}
|{{FFF}}
|{{FFF}}
|{{RT|Z|#000|#FFF}}
|{{FFF}}
|{{FFF}}
|{{RT|0|#000|fff}}
|{{FFF}}
|{{FFF}}
|{{FFF}}
|{{RT|Z|#000|#FFF}}
|{{FFF}}
|{{FFF}}
|{{RT|1|#000|fff}}
|-
|{{000}}
|{{000}}
|{{000}}
|{{000}}
|{{000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|▲|#888|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|{{RT|▼|#888|#000}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|-
|{{888}}
|{{888}}
|{{888}}
|{{888}}
|{{888}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|{{RT|+|#888|#000}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|-
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|≈|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|7|#00f|#000}}
|{{RT|~|#fff|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{888}}
|{{RT|+|#888|#000}}
|{{888}}
|{{RT|.|#0f0|#fff}}
|-
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|≈|#fff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|~|#0ff|#000}}
|{{RT|7|#00f|#000}}
|{{RT|≈|#0ff|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{888}}
|{{RT|+|#888|#000}}
|{{888}}
|{{RT|.|#0f0|#fff}}
|-
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|≈|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|7|#00f|#000}}
|{{RT|≈|#0ff|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{888}}
|{{RT|+|#888|#000}}
|{{888}}
|{{RT|.|#0f0|#fff}}
|-
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|≈|#0ff|#000}}
|{{RT|~|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|7|#00f|#000}}
|{{RT|≈|#0ff|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{888}}
|{{RT|+|#888|#000}}
|{{888}}
|{{RT|.|#0f0|#fff}}
|-
|{{888}}
|{{888}}
|{{888}}
|{{888}}
|{{888}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|{{RT|+|#888|#000}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|-
|{{000}}
|{{000}}
|{{000}}
|{{000}}
|{{000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|▲|#888|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|{{RT|▼|#888|#000}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|}

Both walls fell to the bottom of brook and fell apart into blocks I had used to build the walls. This wasn't such a terrible surprise to me. What was a surprise was that the walls which had fell through walkable brook tiles had "broken" the brook. The game now seems to handle those tiles like they were ending the brook. Water pours in from both ends and simply disappears.

Basically this could be used to create more tiles for water to pour out of map...

--[[User:Athan|Athan]] 13:17, 15 April 2008 (EDT)

== Unfound Underwater River ==

on my old fortress i used to have alot of 'Deceased' creatures like snakemen and lizardmen popping up on the Creatures Menu. Why are they popping up when i can't see the underground river? – [[template:unsigned|unsigned]] comment by [[User:Hoborobo|Hoborobo]]

:It's an exploit (I think), wait a season then zoom to a body part of these dead creatures and dig to that location to uncover it. – [[template:unsigned|unsigned]] comment by [[User:LrZeph|LrZeph]]

== Specific Location ==

It seems like cave rivers (the tiles that actually have water) are only found 1 z-level below the base of a mountain. Is this true? If it is it might be helpful to add that to the page... – [[template:unsigned|unsigned]] comment by [[User:Xonara|Xonara]]

:Doesn't look like it. My cave river is 19 z-levels above "ground zero".--[[User:Maximus|Maximus]] 03:14, 25 October 2008 (EDT)
::Oh OK, thanks. --[[User:Xonara|Xonara]] 03:56, 25 October 2008 (EDT)

== River Source tiles ==

On my map a four tile wide river starts at the north edge of the map, winds around then branches into about six one tile wide fingers. The flow is from the fingers out to the north edge. At the tip of each finger is a tile marked "River Source". Some of these are above ground and some are just inside the mountain, one z-level from the surface. 
The source looks something like this, I've shortend it a bit, with the water flowing up.
RRRR R River
RRRR S River Source
RRRR
RRRRR
RRRRRR
RRRRRRRR
RRRRRRRRRR
RR RRRRRRRRR
RR RR RRRRRRRR
RR RR RRRRRR
RR RR RRR RRR
RRR RRR RR RRR
R R R R R R RRR
R S R R S S RRRS
S S R
S
I haven't seen mention of these River Source tiles before. I mention it because the article says "rivers presumably contain an unlimited amount of water and cannot be drained." Well, now we have a source for all that water. I'm going to dam each of the river sources, should be easier to dam each of the single tile fingers then the river itself, gaining full control over the river. Then I can close off all but one to see what the rate of flow is. I count eight source tiles feeding my four tile wide river. 
--[[User:Schwern|Schwern]] 04:03, 14 December 2008 (EST)

:Depends on how much drain you put on the system. Merely falling off the map edge a few dozen tiles away is probably something that a single water source tile can handle. River source tiles do not appear under that name but are on all maps with a river: a row at the side of the map from which the water flows. They also work a lot like aquifer tiles. --[[User:Savok|Savok]] 09:50, 14 December 2008 (EST)

== River Sinks ==
I'd like to redirect my river out a different side of the map... Since it's on a plateau I can easily redirect it to the valley on one edge of a map, but is it confirmed that water reaching the edge of the map will spread off of it? And, if so, how do I efficiently get that water right to the very edge, given that I can't channel (or, I assume build walls) on the last row at the edge of the map? Similarly, I assume I can't channel through the lowest level of the map to make my own chasm, right? Thanks! [[User:Freshyq314|Freshyq314]] 20:52, 28 January 2009 (EST)

40d Talk:River

2009-10-15T22:44:57Z

FlyingBishop:

I think the image should be edited... the light blue rivers are streams, not brooks. Brooks are actually invisible on the region map, only visible on local. Only a minor issue though, but it can cause confusion. [[User:Lightning4|Lightning4]] 16:49, 16 November 2007 (EST)
==River Mechanics==
I want to clean up the "other facts" section an make it a little more organized. I recently dammed a river to build the entrance to my fortress in the middle of the river, and discovered several things that the article didn't quite explain (I updated the language to clarify it, but it's still a little disorganized.)
Here are the important things:
*River source tiles function essentially like aquifer tiles. Further experimentation should try to see if they have a greater refill rate or not.
*Also like aquifer tiles, river source tiles cannot provide enough pressure to rise above the level they are on.
*A river, like an aquifer, can absorb an unlimited amount of water.
These three facts taken together lead to a significant exploit. If you build a solid wall of pumps pumping against the current, the river can actually be drained back into itself. I did this with a river in a sunken channel, so water draining off to the sides wasn't an issue, but the water drained back into the river within 6 tiles (on a 20 tile wide river.) It therefore follows that very short walls on both sides of the river could easily be built to contain the water until it drains back in on another map.
If you don't want to use this exploit, it takes a little more work, but you can use the same basic structure to divert the river into an aquifer if you have one.[[User:FlyingBishop|FlyingBishop]] 22:44, 15 October 2009 (UTC)

===2967067655===

The "cave river" in seed 2967067655 is a short segment enclosed in solid rock, that comes from nowhere and "falls away" into open space at both ends - open space that doesn't extend to the level below. Is this typical of 0.27.169.33? If so, I'll have to put all my cave river plans off to a future version. [[User:Kidinnu|Kidinnu]] 09:54, 14 November 2007 (EST)
:That sounds very strange. The cave rivers I've seen are sourced from a "mysterious area" and usually either continue off the map or fall off the bottom. They also tend to go through several lowerings of their elevation. Are you sure you fully explored it? [[User:VengefulDonut|VengefulDonut]] 10:03, 14 November 2007 (EST)

I don't know where this should be mentioned, but there is a huge difference on my machine between FPS on maps with brooks and maps with rivers. I've got a 3.4ghz and 2 gig ram, and my FPS on a map with a river drops to 15-20 right off the bat, where it stays in the high 50's until 30-40 dwarves with only a brook. -- unsigned, but written by Gotthard, according to page history.

I added a bit about temporarily draining and permanently damming rivers and linked to a movie I recorded of doing just that. I think there are ways that would be easier on the dwarves and less micromanagey - one way, perhaps, may be to blast a 3-wide section of the river floor, instead of a 1-wide one, and then build floors in the middle column, and then build floodgates on top of those - that should keep the pesky backflow (which made installing the floodgates so arduous) from interfering with the damming. --[[User:SL|SL]] 00:28, 30 November 2007 (EST)

===="Cave river"?====
Is there anywhere in the game that these are called "cave rivers"? Or is this purely from this discussion?--[[User:Albedo|Albedo]] 06:33, 30 May 2009 (UTC)

== Draining brooks ==

I made following experiment:

*1. Built a bridge over brook, the brook flowed from left to right
*2. Built walls for the bridge
*3. channeled under right wall
*4. I then removed floors between walls of the bridge so that walls would fall in the brook

Purpose of this experiment was to drain the river. I made two walls to see what happens when I drop wall on the brook tile, and when I drop walls on brook tile that has been dug out. I was expecting to see my left wall intact on the brook, like if I had built the wall right on top of brook tile. And to see my right wall intact at the bottom of the brook where I had channeled out the brook.

Setting, before removing any parts of the bridge.
{| style="border-spacing: 0"
|-
|{{FFF}}
|{{RT|Z|#000|#FFF}}
|{{FFF}}
|{{RT|-|#000|#FFF}}
|{{RT|1|#000|fff}}
|{{FFF}}
|{{FFF}}
|{{FFF}}
|{{RT|Z|#000|#FFF}}
|{{FFF}}
|{{FFF}}
|{{RT|0|#000|fff}}
|{{FFF}}
|{{FFF}}
|{{FFF}}
|{{RT|Z|#000|#FFF}}
|{{FFF}}
|{{FFF}}
|{{RT|1|#000|fff}}
|-
|{{000}}
|{{000}}
|{{000}}
|{{000}}
|{{000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|▲|#888|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|{{RT|▼|#888|#000}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|-
|{{888}}
|{{888}}
|{{888}}
|{{888}}
|{{888}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|{{RT|+|#888|#000}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|-
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|≈|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|7|#00f|#000}}
|{{RT|~|#fff|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{888}}
|{{RT|+|#888|#000}}
|{{888}}
|{{RT|.|#0f0|#fff}}
|-
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|≈|#fff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|~|#0ff|#000}}
|{{RT|7|#00f|#000}}
|{{RT|≈|#0ff|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{888}}
|{{RT|+|#888|#000}}
|{{888}}
|{{RT|.|#0f0|#fff}}
|-
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|≈|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|7|#00f|#000}}
|{{RT|≈|#0ff|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{888}}
|{{RT|+|#888|#000}}
|{{888}}
|{{RT|.|#0f0|#fff}}
|-
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{RT|7|#00f|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|≈|#0ff|#000}}
|{{RT|~|#0ff|#000}}
|{{RT|≈|#0ff|#000}}
|{{RT|7|#00f|#000}}
|{{RT|≈|#0ff|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{888}}
|{{RT|+|#888|#000}}
|{{888}}
|{{RT|.|#0f0|#fff}}
|-
|{{888}}
|{{888}}
|{{888}}
|{{888}}
|{{888}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|{{RT|+|#888|#000}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|-
|{{000}}
|{{000}}
|{{000}}
|{{000}}
|{{000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|▲|#888|#000}}
|{{RT|.|#0f0|#000}}
|{{RT|.|#0f0|#000}}
|{{FFF}}
|{{FFF}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|{{RT|▼|#888|#000}}
|{{RT|.|#0f0|#fff}}
|{{RT|.|#0f0|#fff}}
|}

Both walls fell to the bottom of brook and fell apart into blocks I had used to build the walls. This wasn't such a terrible surprise to me. What was a surprise was that the walls which had fell through walkable brook tiles had "broken" the brook. The game now seems to handle those tiles like they were ending the brook. Water pours in from both ends and simply disappears.

Basically this could be used to create more tiles for water to pour out of map...

--[[User:Athan|Athan]] 13:17, 15 April 2008 (EDT)

== Unfound Underwater River ==

on my old fortress i used to have alot of 'Deceased' creatures like snakemen and lizardmen popping up on the Creatures Menu. Why are they popping up when i can't see the underground river? – [[template:unsigned|unsigned]] comment by [[User:Hoborobo|Hoborobo]]

:It's an exploit (I think), wait a season then zoom to a body part of these dead creatures and dig to that location to uncover it. – [[template:unsigned|unsigned]] comment by [[User:LrZeph|LrZeph]]

== Specific Location ==

It seems like cave rivers (the tiles that actually have water) are only found 1 z-level below the base of a mountain. Is this true? If it is it might be helpful to add that to the page... – [[template:unsigned|unsigned]] comment by [[User:Xonara|Xonara]]

:Doesn't look like it. My cave river is 19 z-levels above "ground zero".--[[User:Maximus|Maximus]] 03:14, 25 October 2008 (EDT)
::Oh OK, thanks. --[[User:Xonara|Xonara]] 03:56, 25 October 2008 (EDT)

== River Source tiles ==

On my map a four tile wide river starts at the north edge of the map, winds around then branches into about six one tile wide fingers. The flow is from the fingers out to the north edge. At the tip of each finger is a tile marked "River Source". Some of these are above ground and some are just inside the mountain, one z-level from the surface. 
The source looks something like this, I've shortend it a bit, with the water flowing up.
RRRR R River
RRRR S River Source
RRRR
RRRRR
RRRRRR
RRRRRRRR
RRRRRRRRRR
RR RRRRRRRRR
RR RR RRRRRRRR
RR RR RRRRRR
RR RR RRR RRR
RRR RRR RR RRR
R R R R R R RRR
R S R R S S RRRS
S S R
S
I haven't seen mention of these River Source tiles before. I mention it because the article says "rivers presumably contain an unlimited amount of water and cannot be drained." Well, now we have a source for all that water. I'm going to dam each of the river sources, should be easier to dam each of the single tile fingers then the river itself, gaining full control over the river. Then I can close off all but one to see what the rate of flow is. I count eight source tiles feeding my four tile wide river. 
--[[User:Schwern|Schwern]] 04:03, 14 December 2008 (EST)

:Depends on how much drain you put on the system. Merely falling off the map edge a few dozen tiles away is probably something that a single water source tile can handle. River source tiles do not appear under that name but are on all maps with a river: a row at the side of the map from which the water flows. They also work a lot like aquifer tiles. --[[User:Savok|Savok]] 09:50, 14 December 2008 (EST)

== River Sinks ==
I'd like to redirect my river out a different side of the map... Since it's on a plateau I can easily redirect it to the valley on one edge of a map, but is it confirmed that water reaching the edge of the map will spread off of it? And, if so, how do I efficiently get that water right to the very edge, given that I can't channel (or, I assume build walls) on the last row at the edge of the map? Similarly, I assume I can't channel through the lowest level of the map to make my own chasm, right? Thanks! [[User:Freshyq314|Freshyq314]] 20:52, 28 January 2009 (EST)

40d:River

2009-10-06T01:02:50Z

FlyingBishop: /* Other Important Facts */

== Surface Rivers ==

'''Rivers''' are found on the surface of world maps. They vary in width and depth, some being more wide and some being more deep than others. They often flow through deep canyons or just across the flat surface of a level. On levels with [[cliff]]s, [[waterfall|waterfalls]] may be found.

'''Major rivers, Minor rivers, Streams and Brooks'''''

On the surface of the world you can find four different types of rivers.

*Major Rivers are distinguished by a "=" as opposed to a "-". Some worlds have no Major Rivers so they can be considered quite valuable. Usually they have minor river tributaries and can often feed large [[lake]]s. Major rivers are much wider than regular rivers. Besides this, the difference (if any) between major and minor rivers has yet to be discovered. However major rivers are believed to lower the fps.
*Minor Rivers are dark blue and usually have tributaries of brooks.
*Streams are light blue and often converge with other streams, and have some tributaries of brooks.
*[[Brook]]s are not visible on the region map. They are the smallest flowing body of [[water]] that can be found ingame. Brooks have a special surface, allowing [[dwarves]] and other units to walk on top of them as if they were covered by floor [[grate]]s. Brooks are very common, almost every tile around a stream or larger river will have a brook running through it.

[[Image:Watersystems01.jpg|298px|thumb|Different sorts of rivers in action]]

== Underground Rivers ==

An '''underground river''' is, obviously, a river found [[underground]]. They can be located on the embarkation map pre-[[embark]] through use of the [[site finder]], but are usually invisible until revealed by [[exploratory mining]]. When found, the game will pause and special announcement will be seen.

[[Cave spider]]s may occur near underground rivers. They leave small webs strewn around any nearby areas, which can be collected and woven into [[silk]].

It is also possible (but unusual) to find underground rivers or pools which are automatically visible, as they are exposed to the surface (often due to erosion during world generation) - you may even see a few [[tower-cap]]s already growing in the area. You can tell it's a cave river/pool because of the distinctive aquatic humanoids such as [[Frogman|frogmen]] or [[olm]]s, and the ever-dangerous [[cave crocodile]]s. An exposed underground river cannot be distinguished from the more typical hidden type during site-selection.

== Other Important Facts ==

*Rivers presumably 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 install [[floodgate]]s. Despite being an unlimited source of water, river source tiles will only refill up to the level of the river: 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 [[murky pool]].
*Rivers and streams often contain an abundance of [[fishing|fish]], including highly dangerous dwarf-killing fish such as [[carp]], [[Pike (fish)|pike]], and [[longnose gar]]. Brooks never contain any dangerous fish, only the vermin variety that your fisherdwarves can catch.
*Once dammed, a river will cease to produce additional water, 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 flowing again.

== See also ==

* [[Water]]

{{World}}

[[Category:Map tiles]][[category:Water bodies]][[Category:World]]

40d:River

2009-10-06T00:58:59Z

FlyingBishop: /* Other Important Facts */

== Surface Rivers ==

'''Rivers''' are found on the surface of world maps. They vary in width and depth, some being more wide and some being more deep than others. They often flow through deep canyons or just across the flat surface of a level. On levels with [[cliff]]s, [[waterfall|waterfalls]] may be found.

'''Major rivers, Minor rivers, Streams and Brooks'''''

On the surface of the world you can find four different types of rivers.

*Major Rivers are distinguished by a "=" as opposed to a "-". Some worlds have no Major Rivers so they can be considered quite valuable. Usually they have minor river tributaries and can often feed large [[lake]]s. Major rivers are much wider than regular rivers. Besides this, the difference (if any) between major and minor rivers has yet to be discovered. However major rivers are believed to lower the fps.
*Minor Rivers are dark blue and usually have tributaries of brooks.
*Streams are light blue and often converge with other streams, and have some tributaries of brooks.
*[[Brook]]s are not visible on the region map. They are the smallest flowing body of [[water]] that can be found ingame. Brooks have a special surface, allowing [[dwarves]] and other units to walk on top of them as if they were covered by floor [[grate]]s. Brooks are very common, almost every tile around a stream or larger river will have a brook running through it.

[[Image:Watersystems01.jpg|298px|thumb|Different sorts of rivers in action]]

== Underground Rivers ==

An '''underground river''' is, obviously, a river found [[underground]]. They can be located on the embarkation map pre-[[embark]] through use of the [[site finder]], but are usually invisible until revealed by [[exploratory mining]]. When found, the game will pause and special announcement will be seen.

[[Cave spider]]s may occur near underground rivers. They leave small webs strewn around any nearby areas, which can be collected and woven into [[silk]].

It is also possible (but unusual) to find underground rivers or pools which are automatically visible, as they are exposed to the surface (often due to erosion during world generation) - you may even see a few [[tower-cap]]s already growing in the area. You can tell it's a cave river/pool because of the distinctive aquatic humanoids such as [[Frogman|frogmen]] or [[olm]]s, and the ever-dangerous [[cave crocodile]]s. An exposed underground river cannot be distinguished from the more typical hidden type during site-selection.

== Other Important Facts ==

*Rivers presumably 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 install [[floodgate]]s. For some reason, rivers will not overflow floodgates which are blocking them. The water just... stops. 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 [[murky pool]].
*Rivers and streams often contain an abundance of [[fishing|fish]], including highly dangerous dwarf-killing fish such as [[carp]], [[Pike (fish)|pike]], and [[longnose gar]]. Brooks never contain any dangerous fish, only the vermin variety that your fisherdwarves can catch.
*Once dammed, a river will cease to produce additional water, 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 flowing again.

== See also ==

* [[Water]]

{{World}}

[[Category:Map tiles]][[category:Water bodies]][[Category:World]]