What happens 100 years from now when, if climate change has brought us to a point where water has become one of our scarcest resources, and more precious than oil or gold? We've asked fiction writers to imagine the Great Lakes region a century or more on, and help us paint an audio portrait of that world.

In "The Last Cribkeeper" by Peter Orner, we meet Harry Osgood as he walks along the shores of Lake Michigan. For years, he served as the guard for one of the water intake cribs miles from Chicago's shores. Now an old man, Harry looks out over the lake and reflects on how it has shaped the city's identity and his own.

(Flickr/josh s jackson)