Do power shafts effect water flow and/or volume or are the 'ignored' in water physics?

[Enginerd]

1. POWER SHAFTS AND WATER VOLUME - Do power shafts affect the 'available volume' of a terrain block (of water)?
by this i mean, if you had a block of water vs a block of water with a power shaft in it; does the game actually factor in the 'occupied volume' by the power shaft and therefore irrigation canals such as show in my screenshot actually will have some factor of less water than just having water?

To be clear - i understand this would be minimal impact nor would i care much either way, im just curious as it also falls into my next question which would definitely be something to consider in builds.

2. POWER SHAFTS AND WATER FLOW - Do power shafts affect the water flow physics in any way?
Similar to affecting volume; is there any impact power shafts have on how water will flow like choosing a path of least resistance; creating different currents and speeds?

screenshot from my game to illustrate:
https://steamcommunity.com/id/B1llaB0ng23/screenshot/2520396690116208088/

3. Side bar: in trying to understand the water physics more, referring to my screenshot above.. why would the water want to rush significantly faster into the small irrigation canal (that makes many windy bends) vs just going to the wider left area through my water wheels? I thought maybe it was a slight water level difference but the two gauges i put in seem to indicate the exact same level AND the flood gate between those two areas is set to 0.

I want water to go into that area for irrigation but i want the majority of the power to got towards the water wheels just off to the left.

Do the water wheels create a sort of 'resistance' and thats why im seeing such a difference other then what would be a ' venturi affect ', for lack of a better term, of large water way vs small water way? because the water in the area before that opening is surging pretty fast as if it was being sucked into the canal.

[MicroElf]

When you compress water to tighter canal the flow rate is increased and vice versa. It can be beneficial to narrow water flow before power wheels. That way you will get more power with the same amount of wheels. Be careful of overflows though.

[Momaw Nadon]

The water is flowing up from the bottom of the screenshot and turning to the left correct? I think this is more of a path of least resistance for the flow and not really the power shafts doing anything, that irrigation channel is a straight path for water flowing up from the bottom of the screenshot, so it is going to flow that way first, then to the left. Where is the outlet of that channel? Does it meet back up with the same river? Or come out closer to where the water exits the map?

I've thought in the past that shafts underwater might change flow rates, but was never too certain. My solution is to always put my power shafts in their own channel 1 level below the bottom of my river/channel/reservoir. I know that doesn't help in this instance, but it keeps my brain from getting hung up on wondering about it.

[oyssoyss]

no , they are just ignored.

[Jack]

Yes, water wheels do create resistance. If you put a row of them halfway across a river you'll see most of the water just goes around them.
As far as I'm aware it's only water wheels and structures like dams and levees that affects water flow. Power shafts, stream gauges and even buildings are ignored

[Raisti]

Would love if the "Weigth" of the Batterie would interact with water.

Would be so cool, when they drop in the water that they raise the lvl of the water.