Canada’s Hidden Subterranean Rivers / / No Comments Canadian cities, like many cities around the world, have a history of hiding waterways underground. As cities grow rivers can become obstacles to the movement of people, can be seen as wasted real-estate, and historically (when cities had poor sanitation) they often became open sewers. For these reasons cities often culvert and divert rivers underground.In Discover Where Ancient Rivers Flow CBC Maps Mania… more → Posted in: Interactive Maps Tagged with: Canada's, hidden, Rivers, Subterranean