I thought that river basin or drainage area map was interesting. Looking at the rivers I'm very familiar with, Merrimack, Connecticut, Hudson, Delaware, Susquehanna, and how the scenery in my head plays out along shapes in that picture.
More vaguely, memories of encounters with distant rivers like Ohio, Mississippi, Rio Grand, Yellowstone, Columbia, spur daydreams that make me wish I was goofing off at work.
