Pittsburgh’s Three Rivers define its geography and help shape its identity. Yet defining Pittsburghers own relationships to the Monongahela, Allegheny and Ohio Rivers is an ever-shifting process. For over a century, the Three Rivers helped fuel Pittsburgh’s boom, creating a culture where residents saw their rivers as little more than industrial sewers. Today, that’s changing. Decades of clean-up have started a new, hopeful chapter in this story, where Pittsburghers are re-imagining their relationships to their signature waterways.