Maybe it does sometimes though? Speaking of the great lakes, if you live in the region it doesn’t take you very long to drive out of the watershed for your resp

Maybe it does sometimes though? Speaking of the great lakes, if you live in the region it doesn’t take you very long to drive out of the watershed for your respective lake. That should be where the bounds of effect end, and that entire region will generally have plenty of water. For example, Ohio has two watersheds, one for the lake up north and another for the Ohio river which takes up 2/3 of the state. Excess water consumption in the lake erie watershed shouldn’t ever hurt the ohio river watershed. Issues with the rivers that feed the ohio river might cause issues, but the point is this: the degrees to which regions are linked in terms of water varies dramatically.