How to stop this overflow?

[FDru]

https://steamcommunity.com/sharedfiles/filedetails/?id=3148287913
https://steamcommunity.com/sharedfiles/filedetails/?id=3148287824
I was ignoring this for awhile because it's not a big deal with water, but the badwater is going to be a problem so I need to stop this overflow on the edges where the water wheels start...

[Siwa]

cant see pictures bad link

[Oragepoilu]

Too much flow that isn't straigh going in a too small channel.
It's not a big issue by itself.
The most easy way is to put block on the side of the wheel so nothing can escape with power going above, or having the dam feed directly the channel (no wider area between both), or doing both. After water goes trough the first wheel it's usually not happening. You could also feed less water (close one flood gate), if your dam have an overflow setup somewhere else.

But to be honest, double wide wheel is rarely worth it, unless you play on really easy setting.
It's best to have a smaller channel (2 wide) that is longer so your dam need to feed less water for the same flow per tile, and thus need a smaller dam. If you play on normal, it's fine the game give you plenty of water, but it wouldn't works on hard.

[night]

Water flow is inconsistent and annoys the hell out of me on some things, but is good at modeling the height and leveling the overall 'layer'. I believe it is that new flow coming in and not 'flattening' out soon enough before the levee.

[mightymuffin]

Make the channel wider, put less water through there by putting in a second channel to divert some of the water or dynamite it deeper. Any of those should work.

When water bottlenecks it both speeds up and gets deeper, your waterwheels are forcing the flow to slow down which will increase depth as well because the water backs up and cant go forward so it goes up.

[TheLostPenguin]

Quick and dirty hack of a fix would just be to wall in the whole assembly with double height walls, looks like you're already taking your powerline up and out anyway so just contain the whole mess. You'll get a bit of flowby along the ledge for the powerline but meh you're already losing water messily anyway.

Longer term better fix would be to feed less water, but use it better. You've got a drop of 3 but you're only taking power from the last 1, you could fit another tier of wheels in the space you have there, get power from another level of drop, and probably come out ahead on total power output whilst feeding slightly less water and not overflowing.
Maybe this setup was still work in progress, but if I was building a setup specifically for power as this appears to be not just chucking water wheels wherever there's some convenient flow, it would be better to get power from every level of drop you have between intake and exhaust heights, and have side channels to feed into the wheels at the relevant height for 2 and 3 deep intake gates if you need to maintain power output through droughts from the build.

[FDru]

Originally posted by TheLostPenguin:

Quick and dirty hack of a fix would just be to wall in the whole assembly with double height walls, looks like you're already taking your powerline up and out anyway so just contain the whole mess. You'll get a bit of flowby along the ledge for the powerline but meh you're already losing water messily anyway.

I tried everything but ultimately this is the only thing that worked.

btw this is the whole thing in case anyone was wondering:
https://steamcommunity.com/sharedfiles/filedetails/?id=3149011866

[Kinvadren]

I could be wrong about this, but is this maybe an issue of "waves" happening with water hitting walls before the waterwheels while also needing to go through a narrower channel than where it started (bottlenecked)? I remember having a major problem with a multi-dam set up that kept causing overflow and the only thing I could figure to be causing it was that the water was flowing down, hitting obstacles, and "bouncing back", causing back and forth waves as the two moving liquids interacted.

But I might be way over complicating the actual water physics being used here. But that's how it looked to me. Spreading out the dams and extending the distance so that "rushes" of water didn't slam into walls and break points so hard seemed to solve it for me. Or, like others have suggested, build higher walls where the water keeps overflowing. It might settle down further down stream.