What can ‘too much’ mean, though? If now it is not being used and allowed to just ‘run free?’ The ocean didn’t need it, the land does.
My sis is a hydrogeologist, worked on this stuff in Arizona, too. She said the politics turned her stomach.
1. A river is more than just a funnel of water. It affects the entire ecology around it on both sides. It affects the weather as well. It's more complicated, I know, that just a funnel of water. You know that.
It also supports all the life from microscopic to full blown fish and fish provide food for all kinds of mammals.
As the water enters the sea, there are estuaries, deltas and confluences, all important parts of our ecology.
And, sooner or later the water, at sea or in lakes, evaporates and comes down as rain somewhere else.
Also, there is EXACTLY the same amount of water on earth today as 5 billion years ago. No more, no less. In many forms.
2. Your sis...I bet she has had a BELLYFULL of all the politics. It won't be ending any time soon. Just a guess! :o)
I'm sure your sister has managed to sort our all the B.S. and focus on the important stuff: God, family (especially sibs!) and friends. Make her day and send her a SMALL box of chocolate candy, just for fun.