GEOG306 Lecture Notes - Lecture 15: Water Balance, Drainage Density, Hydrograph

• School: University of Waterloo
• Department: Geography and Environmental Management
• Course: GEOG306
• Professor: Johanna Wandel

Document Summary

Best management practices: from site to watershed scale (chapter 13) If drainage density increases, there is an increase in peak discharge and erosion: we want to find ways to maintain drainage density. Levels of control: treatment train approach, at source (lot level, control as close to source as possible green roofs, conveyance, pipe system, stream, groundwater, end-of-pipe, centralized, surface, underground. Potential environmental, financial, and social benefits of low impact development: environmental benefits. Improved groundwater recharge: reduced greenhouse gas emissions, reduced urban heat stress, financial benefits, reduced construction costs compared with all-grey infrastructure, or compared with upsizing grey infrastructure for increased runoff, other social benefits. Increased public education on their role in storm water management: reduced flash flooding, green jobs, potential increase in economic development from improved aesthetics. Production bmps: planning policy, limits to impervious surfaces, site management guidelines, education and incentive programs.