Thanks you all for the comments and votes. The water wheel is called the "Dalby Water Wheel" and is located on Washington state route 106 which runs between state route 3 and historic US-101. It's very easy to miss when riding/driving by but interesting to watch.
After careful review of all votes and submissions, ATARIAN is declared the winner!
Apparently no-one rode in a place worthy of a photo in the entire month of August.
Good luck to all for the September contest.