Water Cycle on Roshar

[Hen she/her]

Okay, Its probably a dumb question, But how do Highstorms get their water? Highstorms completely flood the Shattered plains, which take weeks to walk across, chasms spanning from 40-100 or more feet deep. They continue all the way across Roshar, raining the entire way, and they come every few days. If Roshar follows the water cycle, which I assume it does, there simply isn't enough time for that much water to evaporate between Highstorms, right? Not to mention The Weeping, which is two weeks of continual rain, and the Everstorm, which doesn't always have rain but still.

[+Invocation]

Highstorms probably primarily get their water from the ocean between the Origin of Storms and the continent itself. There's a lot of water in that expanse, so a highstorm's amount wouldn't be missed, even if it takes longer to get back there than it would on earth.

As to where the water goes, probably disappears into the underbelly of Roshar. There have been references to caverns a couple times (where the Purelake retreats to and the caverns beneath Urithiru), so between those and the normal "drain into the ocean" thing, it probably takes care of most of it (especially on the Plains, where one end backs out into a coastline iirc).

[Chasmgoat he/him]

Good question. I will go do some research and see if I can come up with a solution.

another thing is that the water cannot get absorbed into the ground since it is rock.