I liked the fantastical atmosphere you gave to the piece, but I think that gets dragged down by your endless descriptions of the most mundane things that ended up tiring me instead of making the scene more special, like they should. I think trying to write a contrast between the mundane and the surreal is good, but sometimes there was just too much mundane that really served no purpose in the article other than just be there.
Usually I'm okay with fantastical things not being explained, like the powers of the little girl, but how is a whole civilization lost under a lake? It felt to me as if that was done only to fit into the theme of the jam. The city doesn't even have its own name, though that might be a nitpick of mine.
The use of "unimportant" at the beginning also miffed me. I understand what you tried to do with that, but it just got annoying after the fifth time.
Anyways, I wish you the best in your future writing endeavors, but this is a -1 for me.