Thank god I was only going one frame at a time, otherwise this could've been a disaster.
Let's just say that two pump towers that draw their water from the base of a large three story tall cistern provide *obscene* amounts of pressure. I was expecting four pump towers (Two on the east, two on the west) to be able to adequately feed my five planned waterfalls. Turns out, I could've provided more than enough water with half that.
Water is, quite literally, traveling horizontally while in mid air. And not just a stray drop or two, but a total of seven tiles surrounding the center waterfall are at 7/7 depth and another is at 3/7 on the z-level directly below my plumbing. For reference, the water has only fallen a total of three z-levels on the waterfall contained by windows (Ie forced down a 1x1 chute).
Oh god...
I'll be able to cut off the water feed, but it'll be several dozen frames until my fastest dwarf could get there...
So much for showing off a partially completed waterfall system for the next spring upload, haha.
Edit: 24 tiles of open space around the central waterfall now contain water. Most are 7/7.
*Whimper*
2nd Edit: These two water pump towers are feeding a 25 tile large water fall...and still flooding my level directly below the plumbing.
What. The. Fuck.
3rd Edit: Hahaha. Oh god. The 25 tile large waterfall just hit my ground floor. The problem? The ground floor only has a 1x1 hole in the ground for the central waterfall.
Ahahahaha.