Just curious, If you could explain where one would you find the water to irrigate an area the size of the great basin?
I'd scoop up some of those big chunks of Antarctic ice shelf before they melt and contribute to rising sea levels.
I'd also divert water from any river in danger of flooding over its banks. Hopefully, the wormholes device has a biologicals filter on it. Wouldn't want to tranport move critters into new areas where they have no natural enemies to keep them in check.