Actually, they could almost do it, leeneia... I've long felt that it was possible to find areas west of the Mississippi where huge reservoirs could be dug and water diverted thru aqueducts, much the way the ancient Romans moved water but on a larger scale...

These reservoirs could be used for irrigation and for keeping the Mississippi navigable during drought and be release valves during potential flooding... Missouri would be perfect location for one of these deep water lake/reservoirs...

I've always thought it was doable if we ever got to a point where the political will was there to do it...

B~