Resilience measure: Stormwater harvesting system


Stormwater harvesting (SWH) consists in collecting, storing and reusing stormwater collected from drains or creeks, on the contrary to rainwater harvesting (RWH), where rainwater is directly collected from roofs. SWH is particularly common in Australia and New Zealand, while almost unknown in many other countries where RWH is preferred.
(Staub M. and Moreau-Le Golvan Y., 2012, p. 48)

Co-benefits and impacts

As RWH, SWH offers an additional source of water, especially for water-stressed areas. By collecting and using urban runoff, there may be potential reductions in peak flow, annual runoff volume, and the frequency of runoff.
(Staub M. and Moreau-Le Golvan Y., 2012, p. 48)


Despite several advantages, urban storm water remains a relatively neglected water resource, which needs further development. Urban runoff may be polluted with organic matter, pesticides or heavy metals, which effects and fate remain unknown.
(Staub M. and Moreau-Le Golvan Y., 2012, p. 49)

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Last modified: Sept. 19, 2016, 12:17 p.m.