I'm guessing the huge water tank is because the local ground water is too risky to use because of all the Fracking and or oil line spills.
A log home in an area nearly devoid of trees - why not if that's what you want?
The high and dry plains where he built might shrink those logs up a bit quicker than usual, but if he allocated for that he should still be able to open his doors and windows.
My first drafting job was freelance for a log home builder back in the early 1980's in Michigan. I still love log homes.
I trust he put a lot of termite shielding in, just in case.
Termite Map:I should note that such maps dealing with insects are always being updated because of climate change, the bugs are marching further north each year.