If the State owns the rainwater then the State darn well better keep it off of my property! Their rain water has ruined my hay crops, flooded my basement, muddied my fields and barnyard, eroded my soil and drowned out my pastures.
Yes, I own water rights from the river, but since the State owns the rainwater, I demand that they keep their dang water in the river where it belongs - and I will put it on my fields (according to my permit rights) when I want it there!
Seems like the State could be sued for trespass - just like I can be sued if my cows get out and destroy my neighbors’ crops.
Put a collar on the rain, and maybe you got a case eh!