This is a super neat little game, There where a few things to note that i feel would of made this much better! Firstly some sound effects or even a simple music track as it felt it was missing that little bit of polish to it.
Some things i noticed while playing and could be more QoL Fixes is the ability to switch tools, having to find an empty slot and then go get the other tool seems a bit more work especially when the water starts rising pretty quickly. also noticed that it takes three or so times to fix a hole. Not sure if it was by design or not.
overall, its a neat game and a great first submission! keep it up