[CS:GO] WIP Sewers (seeking feedback and opinions)

The lower water doesn't make much sense; the 'gutter' that it flows through seems to be designed to deal with large amounts of water -> if that'd ever happen in the way you currently made the 'low water' version, all the water would simply exit the canal via the road/tunnel.

Also.. Is it a sewer or a water filtration plant? Looks 'awfully' drinkable

I prefer the low water. As Spherix says, the canal is clearly designed to handle larger torrents, but that doesn't mean there wouldn't still be some low level water during a dry season.

What is a problem for me is the wooden(?) bridge. Firstly, it looks really impractical compared to the very functional architecture around it -- why have an arch when you could just have a nice flat walkway? Its stilts also look like they would cause potential blockages in the canal. Worst of all though, it's like 3 or 4 meters away from a perfectly good piece of dry land so why would the builders put it there in the first place?

Yep, water low = better! You'll need some nice decals and details on the wall to get a less generic feeling there

Edit:

BTW there are some problems with proportions. This is a flood duct and there's a tunnel that will be always flooded That car is too big for this tunnel or the tunnel is to small? The wooden bridge is stolen from Japanese garden, it's completely from different story. I guess you should place a metal catwalk or concrete bridge there. Will be more coherent. That metal walkways right next to the river also is a bit bad, it will turn rusty after the first bigger water. If there's no big water then why building such a big walls?

The lower water would definitely make for more interesting gameplay imo and I agree with Seir, you'd need some nice detailing.

Are there areas of the map that are underground? I can't really tell from the pictures if there are underground sections in the middle or not. If not, 'sewers' isn't very fitting - I'd maybe consider a different name.