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Considering stormwater within urban planning
A resilient infrastructure perspective connecting rainfall, runoff, drainage and urban space.
Considering rainfall within the city
Surface permeability, topography, development and existing drainage shape the movement of rainfall. Planning needs to consider flow routes and accumulation areas as well as pipe capacity.
Blue-green infrastructure options
Permeable surfaces, rain gardens, storage areas and managed overland flow routes can be assessed at different scales. Suitability depends on ground conditions, maintenance, existing infrastructure and site use. Comparing options is more useful than applying one solution everywhere.
Operations and maintenance
Drainage records, maintenance access and observations following rainfall are important inputs. Resilience concerns how existing systems are operated as well as how new facilities are designed.