Caroline Bâcle, director. Once upon a time, in almost every industrial city, countless rivers flowed. Houses were built along their banks. Roads hugged their curves. And their currents fed mills and factories. But as cities grew, rivers became so polluted they turned into conduits for deadly waterborne diseases like cholera. Two centuries ago the solution was to bury rivers underground. Today, under the city, they still flow, out of sight and out of mind… until now. Today, urban dwellers are on a quest to reconnect with this lost natural world. Lost Rivers goes on an adventure down below and across the globe, retracing these lost urban rivers by plunging into archival maps and going underground with clandestine explorers. They search for the disappeared Petite Rivière St-Pierre in Montreal, the Garrison Creek in Toronto, the River Tyburn in London, the Saw Mill River in New York, and the Bova-Celato River in Bresica, Italy. Could we see these rivers again? Answers come from visionary urban thinkers, activists and artists from around the world. We will be joined by Ann-Marie Mitroff, River Program Director with Groundwork Hudson Valley, and coordinator of the Saw Mill River Coalition which spearheaded the daylighting of the Saw Mill River. Q&A follows the screening. 2013, Canada, 72 mins.