Okay, I have a few general questions about water and fluid in DF. Keep in mind that I have never actually dabbled in water working before. I have abandoned this idea for my current fort as my -1z level is too dug up to support a moat, but would like to know for future uses.
I have a biome without any running water, just a bunch of murky pools at the ground level. I would like to build a closed system that would pump fresh water and provide for a moat, a waterfall and hospital use. I envisioned it something like this (actual levels might be a bit off):
a - murky pool (here only one is depicted, but I intended to channel from 4 different pools).
b - some sort of vertical chasm for water to flow through
c1 - one time cistern
c2 - perpetual cistern
d - a stack of pumps one on top of each other
e - moat
basically, my plan was to channel water from various murky pools (one at a time using floodgates) into one big cistern. Than pump the water up a few z level to fill the moat. Water would than be channeled from the moat to another cistern (c2) and on the way provide a waterfall in my dining hall and fresh water in my hospital. From c2 it would than be again pumped into the moat, closing the circle. The dark line in d designates where it would be cut of after initial pumping. This would in theory provide a closed system of fresh water running around my fort.
I want to ask, would this be doable? If so, how could I calculate how much water would I need for this closed system to work? Also, what is the best way to channel water down? Up-down stairs? Ramps?
Also, is it possible to dig a hole in the ground through multiple levels? How would one go about doing that? Would I need acces hallways at every level, or is there a different way?
Thanks for any input.