Also, you don't need to fill it with water to keep things out of it.
AWDBall
Filling ponds is a fairly low priority job. If you go into the Job list you should see the item in the to-do list there somewhere. Let's start with a tiny example if you have a 2x8 area you want to fill and you designate it as one pond then you get one fill pond job. if you make it 16 1x1 ponds then you get 16 jobs queued and more dwarves can help.
As for the aquaduct:
If you have a water source like a brook on the same level as the moat, just dig a channel connecting them, otherwise channel the water as close to the moat as possible, and use screw pumps to lift it to the level you need.
If you use google to search over the wiki you can look at the cached pages until the wiki is back. http://209.85.173.104/search?q=cache:FmJvS7rksZYJ:dwarf.lendemaindeveille.com/index.php/Screw_pump+a+site:http://dwarf.lendemaindeveille.com/index.php/Screw_pump
AWDBall
[ June 05, 2008: Message edited by: awdball ]