One of my engineering friends suggested that it's possible to create water "rights" by covering a reservoir -- as cement lining of an earthen canal can "create" water by preventing it from seeping away. That water, of course, can then be sold elsewhere. (I suppose that Ray would call this "non-tributary.")
Is this a legal way to "create" water? If so, why isn't it done everywhere -- like in LA. Please tell me!
Bottom Line: It's unlikely that you will find $10 on the road, i.e., "if it's too good to be true, it is."