My fictional town of Cascade, in my novel of the same name, faces drowning. What’s not fiction is that flooded towns happened everywhere, all over this country—Florida, California, Oregon, Tennessee, Texas. And they happened all over the world. There’s a lake in Italy, Lago di Vagli, that is actually a hydroelectric dam. In the forties, water authorities flooded a stone village, and every ten years, when the lake is emptied for maintenance, the village emerges from the water like a ghost.