Water pressure question....

[captainamaziiing]

If I have a river on Z 10 as my water source, and my well on level Z 5, with my reservoir on Z 4, can I use the diagonal block method to bring my water pressure down to Z 4 without it flooding it's way back up to Z 5? I know a U bend will only drop you one level from the source. But if I dig a shaft to Z 0 and fill it with water, and place a diagonal at Z 4, do I get Z 4 pressure, or Z 9 still?

[McFuzz]

Though I don't know the exact answer to your water pressure question, I do know you can always just use floodgates and levers if you're worried about water pressure to create an 'airlock' system on a central cistern which can't overflow.

[The Canadian Kid]

Yes, when water squeezes through the diagonal square it is considered a different water source.
I found this video answered a lot of my water questions.
https://www.youtube.com/watch?v=-rY1T1Fh5ug