‘Designing with Nature’ means: Create Greener Communities Strive for a Lighter ‘Hydrologic Footprint’ Achieve Higher Levels of Stream Protection
www.waterbalance.ca Drainage Planning in BC Has Been Over the Decades Drainage Planning in BC Has Been Evolving Over the Decades 1960s: Pipe and Remove 1970s: Detain Peak Flows 1980s: Reactive Mitigation 1990s: Stream Stewardship* 2000s: Sharing a Vision** * Proactive Management ** Watershed-Based Rainwater Management
www.waterbalance.ca The “Trickle-Down” Evolution of Watershed Management in BC (How the Past is Influencing the Present) 1970s - society’s reaction to the “dam builders” redefined the engineer’s role, and resulted in an “interdisciplinary and ecosystem approach” to watershed management outside the urban regions is similarly being translated into an “integrated approach” to urban watershed management at the local government level 2000s - society’s reaction to the “pipe sizers”
www.waterbalance.ca Inter-Governmental Partnership: Vision To promote changes in land development practices so that: The built environment will preserve and/or restore the natural water balance over time Performance targets will be achieved for rainwater runoff volume and flow rate reduction at the source, where rain falls
The Mission is to Create a Legacy 1.Influence choices by individuals and organizations 2.Use the term “sustainability” as a lens for considering approaches that influence choices
www.waterbalance.ca Water Sustainability Action Plan for British Columbia
www.waterbalance.ca The Goal is Full Integration of Philosophy Tool Standards To Achieve the Desired Outcome
www.waterbalance.ca The Missing Link in Watershed Planning has been... A tool that quantifies the benefits – in terms of reducing rainwater runoff volume - of installing source controls under different land use, soil and climate conditions
Planners: Tool for Better Use of Space Engineers: Tool for Pre-Design Landscape Architects: Tool for Green Solutions Ecologists: Tool for Watershed Function Educators: Tool for Social Marketing Water Balance Model promotes Integration of Perspectives
How the Water Balance Model can be used to make better decisions: Local Governments - when communicating with the public Planners and Engineers – when setting performance targets Developers and their Consultants - when testing scenarios Environmental Agencies - when monitoring watershed health
www.waterbalance.ca The Water Balance Model can be applied at three scales: SiteSubdivisionWatershed
www.waterbalance.ca Site Scale Community Liveability WBM Building size Hard surface Landscaping
www.waterbalance.ca What was a conversation… becomes interaction!
www.waterbalance.ca Subdivision Scale: Community Liveability WBM Lot size Road Design Green space Landscaping
www.waterbalance.ca Watershed Scale: WBM Zoning Road Design Green space Landscaping‘BMPs’ Community Liveability
Graphic from Smart Growth BC Actions on the Ground… … Will Result in Cumulative Benefits Over Time!