Icecrown dungeon water help

oki, I want to place a river coming in from outside, but for it to be blocked off so aquatic units cant leave....where can i find a good wal grate doodad, or failing that how do I make the deep water from ahigher area blend properly to the RIGHT? it blends to the left. but....

Any way you could use one of the pathing blocker doodads? I there one for naval units?

Pathing Blockers are all well and good, but it's apperance here, too.

You could always make one? =/

the thing is, I've SEEN the piece I want....it showed up in the 'escape from dungeon' human TFT mission...it was just this grating thing against the wall, and the waterfalls and stuff...

I think the doodad your looking for is called the dungien grate or something like that and its in the dungien and underground tilesets under structures or props but if thats not what your looking for then I don't really know at the moment.