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Younes Alila

    17 – LESSONS FROM THE PAST INFORM THE FUTURE IN METRO VANCOUVER: Adapt to an altered seasonal water balance; deal with uncertainty and manage risk


    “Relying solely on engineering solutions will never be adequate for managing flood risk. Downstream engineering solutions treat the symptoms of the root cause which happens in the headwaters,” stated Younes Alila. “The framework and concepts I advocate for are applicable to all land use and land covers – whether urban, forested or agricultural – to all disturbances, and to watersheds of all sizes.”

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    DESIGN WITH NATURE TO CREATE LIVEABLE COMMUNITIES AND PROTECT STREAM HEALTH: “Downstream engineering solutions are treating the symptoms and not the root cause of an increase in flood risk, which actually happens in the headwaters,” stated Younes Alila, professional engineer and professor in the UBC Faculty of Forestry


    “What is being done in the upland wilderness affects what goes on in the low land because the source of runoff and sediment that runs through urban areas is in the headwaters,” stated Younes Alila. “Forest hydrologists for over a century swept the dimension of frequency under the carpet in the name of the “public does not understand probability”. The rest is history and it has not turned out well. So, I made the conscious decision to make probability central to my outreach to the media, wider public, professionals, and scientists.”

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