In this episode of Keeping it Pristine, Da and Frank talk about some of Toronto’s hidden waterways. Many were paved over during the height of the city’s industrial boom. We describe a few that we came across online via the Lost Rivers Organization and then discuss why understanding them in depth is crucial for future preservation.www.lostrivers.ca/disappearing.htmlwww.hiddenhydrology.org/toronto-lost-rivers/digital.library.mcgill.ca/countyatlas/…apframes.php