The water coming straight out of the wall looks kind of unrealistic. Could it be changed so it comes out like a stream from the hole?
This would make this section look much better.
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Isn’t there anything underwater from which it comes from? I kinda doubt the team made such a huge level design mistake.
Go into the water, “noclip” and check if the water is slightly below the wall.
If so then that is intentional and should look that way.
But if that is the way it’s build, then a small shadow should be added.
But if the water is touching the the wall, then perhaps some
wet surface and algae details can be enough to touch it up.