Are aqueducts supposed to allow flowing water, such as from a screw pump after elevated? because if so It does not appear to be working.

ah ok, no problem

I've allowed screwpump outputs to work as source blocks for the aqueduct. Only the water directly above the screwpump will work.

For right now, they only take ordinary source blocks, which isn't 100% ideal. I'll look into supporting screwpumps.