Interesting. This came up in the local paper a while back: https://www.bendbulletin.com/localstate/6536506-151/building...

Aha, I had noticed a peculiar construction project near John Day recently, which may have been the early stages a BDA's. Here is another article from around the same time-frame as the one you linked, slightly east.

https://www.bluemountaineagle.com/news/mimicking-nature-s-da...

A podcast called The Wild covered this topic recently: http://forthewild.world/listen/ben-goldfarb-on-beavers-compl...