I remember hearing years ago , the Saudis dragging an iceberg from north Pole by ship to Arabia . But it melted ! A lot of fresh water is locked away in ice and snow . Perhaps it could be melted . By waste heat from plants . It should be piped . As canals expose to UV radiation will evaporate on route .
You can but why complicate stuff? If you cannot get water underground or store in retention basins (like rive dams) you still can use desalination.