No, this isn't about the level of underground water. It's actually about water tables. Maybe you should just take a look. It's time to play "one of these things is not like the others" again. Here's a set of beautiful tables by Gaetano Pesce that recreate bodies of water ... beautifully:
My instinctive response to the first three is that they are stunning and fascinating. The fourth (river) is just kinda neat. Is that because it is more artificial than the others and looks like a canal rather than a river? What is it about simply mirroring nature accurately that produces such beauty? (Creatively, in putting it on the table, and with great skill in choosing materials and shaping them to mirror so very well ... but the ones that are more natural mirrors are the ones that are more beautiful.)
There's something extraordinary about depicting the ordinary with artful accuracy.
In no particular order: Biochemistry professor at Seattle Pacific University, book-reader, occasional bloviator, husband, father of three, no, four boys, structural immunologist, Christian, protein designer, baritone, bad guitarist, complex set of chemical reactions, sometimes oblivious human.