First off, beautiful map! great atmosphere. Feels like a real place. I can't wait to play this map.
Not sure if you wanted suggestions as to where to place weps or the placement you have now. I imagine it's probaly where to place them because its pretty sparse right now.
crossbow is in a good spot but the ramp leading out to it provides ultimate camping if you crouch on that ramp and just peek out at eye level. you have the rocketlauncher below it out on the grass, thats way to close. I would put that all the way across on that far walkway area if your looking straight out from the sniper deck. that could counter the camping pretty good. plus that would make a good triangular open fire fight with the crossbow, rocket launcher, and where you have the combine heavy machinegun (I don't know what it's called, srry) add more shotguns and ammo, and I never found the magnum...
here's a few other things I found you probably already know about...

If you run in here and catch that corner of the walkway you start bobbing up and down, i would just resize that back some.

That grate is the only way in and out, BIG deadend, unless someone in the sniper tower opens the gates for you, unless I missed a way to open it from here.

clip that fence on the left or just move it out to the edge more. I just crouched and walked right on by.... :smile: man you could have some fun out there with alot of CB ammo.

I thought this should have benn breakable...

You obviouly know about the water, from what you said in your post, but I thought I would show you what it looks like on my end, just as an FYI.... also, there was water splash sounds but once your in the water it sounds like your runnin on concrete.
I also noticed the water gates never close, that will be a big killer for connectivity, I'd put a timer on them to reset.
thats about it for a quick run through, nice ambient sounds, looks great, bet it's gonna play great for a big crowd too... it is a BIG map. Nice Job! GL in the contest.