Not an answer to the question but an aside related to it: After driving around in the Central Valley and looking at the massive agricultural industry there, it becomes very apparent that we're pumping a significant amount of water out of the ground and allowing it to evaporate into the atmosphere. I wonder how all of this additional moisture is impacting climate change as well. The scale of it all leads me to believe it's not insignificant, and the Central Valley is not the only place where this goes on.