River Flow, Sewer Flow, Street Flow is a location-based, interactive mobile soundscape originally presented in Old Montreal at DHC-ART1 as part of the exhibition Lost Rivers: La Petite St. Pierre. The exhibition took up mobility as a curatorial challenge and featured videos and photographs by underground explorer Andrew Emond and sound compositions by Samuel Thulin. The exhibition thematically resurrected the historic water systems that once traversed the island of Montreal. Daylighting is the process of bringing creeks, streams, and rivers that were buried during the industrial period to the surface. Lost Rivers invited participants to daylight the meandering contours of La Petite St. Pierre virtually on a wintery Montreal night.