why can't i build a levee on top of a dam or platform?

[Veel zout]

i want to build a reservoir with a hole at the bottom for flood control but it feels like the game won't let me. what do i do?

[D4c14_S4nd3r0]

Because the game's 2D water physics (prior to U6) simply doesn't allow for that.
Also your reservoir won't hold any water if it's got hole in the bottom.
Switch to U6 experimental if you want to build this.

Or yk, use floodgates

[Ɲøƈ]

I dunno, dude's got a point. For a basin that you don't intend to use as a reservoir, a hole near the bottom would keep the water level from going above a certain level downstream, as opposed to the upstream effect of floodgates. What he's asking about would be an inverted floodgate. Honestly, that sounds like a good idea.

[<unknown>]

As D4c14_S4nd3r0 said the current stable version of the game Update 5 didn't allow those type of construction. It use a 2.5D water physic as act like a sheet as only the top of the water is used that is why even if you build a 5 deep reservoir only the 3 top layer could be used as the flood gate could be 3 depth. Also many micro management is needed each time of drought or bad tide.

With the current Experimental of the game ( update 6 ), a lot is automated by the use of sluice for bad tide.

Also one Sluice at the bottom of reservoir could do exactly what you want. Also levee could be build on platform allowing to create aqueduct.

I highly suggest you try the experimental of the game.

[Dardomor]

Those who already responded say it all already. But in short: when update 6 comes to main/stable branch you can build dams on top of levees.
So wait for that or play experimental branch.

I would recommend using sluices instead of dams then, but you can indeed build levees on top of dams in U6. Wonder why though, the levees wont have much use in regard to water control then, so might as well use platforms instead.
I'm curious to your plans though, for using levees on top of dams :)

[Veel zout]

Originally posted by D4c14_S4nd3r0:

Also your reservoir won't hold any water if it's got hole in the bottom.

How else do you build a reservoir, then? without a hole at the bottom you can never drain it properly

[Dardomor]

Without the hole... (or with a sluice or a floodgate)

[My Right Toe]

you have to be in experimental mode to do that

[bcrehore]

If you are playing Experimental mode, you have that capability. If you are not, then you should get it on the next update.

[Colorful Colorado]

You can right now in experimental branch. Just tested it.

[danielprates]

The OP has a very fair point and what's more, that is the proper way to build a powerdam, as the water is best used flowing from the bottom towards the power wheel. The game used not to allow that, I wonder if after the new version you will be able to do that. The game will have to properly render water pressure though, which it already kinda does. We'll see

[Ɲøƈ]

Several people JUST said that it works in experimental, and it does. We won't see. We have seen. You can stack levees on a sluice, and then put a floodgate on top of those. Water comes out the bottom if the downstream level is too low, and comes out the top if the upstream level is too high. It's perfect.

[oyssoyss]

now we have 3D water? when will the new update come online?

[tulpabug]

When you change your game properties to use experimental.