Just wondering if its possible to do this?

[serbusfish]

I was thinking of a scenario where you enter a section which is flooded in a way that means you cant descend some stairs to access the next level door, so you need to find a way to drain the water from the level, then once its gone you can go down the stairs and proceed to the next level.

Can this be done? I would have thought it could as in the base game you enter a corridor that isnt flooded which then becomes flooded, so surely it can work the other way around?