Pumping water UPHILL the thousands of feet and thousands of miles from the Lake Superior across the continental divide is only half the problem. Then, after you get it to the Great Basin in Nevada, you have to pump it UPHILL AGAIN several thousands of feet to get it over the Sierra Mountains to get it over one of the passes between the lakes above Sacramento.
And THEN, you still need more room in those lakes to put the water coming back east.
A Columbia River aqueduct would be much easier and economical.
The Great Lakes are at close to 600 feet elevation, the Cali coast at zero. Once you get the initial flow started, shouldn’t gravity do the rest? (Siphon effect)