Sorry for being passive-aggressive with my comment. Maybe the OSM translation to RO is a little bit imperfect, because a lot of these was already tagged as streams and after your edit they are now just tagged as drains.

Okay. Just a simple question. Do you know the difference between a stream and a drain?
Those I tagged or was already tagged as stream are NOT drains, they are individual streams. Here take a look at this article:
waterway=drain

Just for your information, I got these from old maps. From different sources ranging from the 1800s to around the middle of the 20th century.

And I added the forests as points, because there are multiple smaller forests named, however the area tagged as a forest is very large to name it only as 1 forest. Hope it helps, and I am genuinely readding them as points until you can come up with a better solution.

There wasn't any slovak name for it on the map I saw it on, so I didn't add it obviously.

Sorry for the one year late response... I got the source from mapire.eu, and I used multiple maps ranging from 1700 to 1945. I added them as alt_names becuase maybe some locals know them in any of those names.