When I first read Encounters with the Archdruid as an undergraduate doing summer field biology work in the Boundary Waters of Minnesota, I couldn’t begin to fathom how Floyd Dominy and his generation thought that the best thing to do with a river was to dam it. I was young, for one thing, but I was also living in a very watery landscape — travelling by canoe from lake to lake, often camping in weather like we’re having today in Montana — 45 degrees and rain. Drought wasn’t something I understood growing up in the Midwest. One year when I…