[tguvot]

Sea of Galilee water level fluctuates by few meters between years, depending on amount of rains at any given year. Current pumping adds 0.5cm/month. Literally drop in the sea.

IIRC reswamping is mostly done for rewilding terrain. A lot of migratory birds passing through area.

The only hard problem caused by "terraforming", it's that because of water from Sea of Galilee not allowed fully to flow to Dead Sea, it's level gone down and it created a lot of sink holes.

To mitigate it, there is another long discussed pumping projects that can't lift off: https://en.wikipedia.org/wiki/Red_Sea%E2%80%93Dead_Sea_Water...