Why can’t the US build infrastructure that automatically siphons water from flood zones to the west during flood seasons?

Question

Why can’t the US build infrastructure that automatically siphons water from flood zones to the west during flood seasons?

In: 4

Answer 1

Also, compared to the volume of oil or gasoline sent via pipeline, the amount of water western desert cities would need is enormous. A typical person uses about 1 gallon of gas per day but uses 100 gallons of water per day.