Can allotment-scale rainwater harvesting manage urban flood risk and protect stream health? La récupération des eaux pluviales à la parcelle : peut- elle protéger contre les inondations et la dégradation des milieux aquatiques?
نویسندگان
چکیده
The traditional management of stormwater with a singular focus on flood protection has resulted in the degradation of receiving waters. The health of urban streams is degraded by a suite of stressors, notably, the frequent disturbance due to stormwater runoff. We investigate the catchment scale implications of allotment scale rainwater harvesting, in terms of potential simultaneous benefits for stream protection and flood risk. We used an event joint probability approach to estimate flood risk for hypothetical catchments with varying degrees of urbanization and rainwater harvesting. We found that allotment-scale rainwater harvesting can provide moderate (but potentially significant) reductions to flood risk. To further reduce flood risk, attention should be given to decreasing the volume of rainfall which becomes runoff, by combining allotment-scale rainwater harvesting with a range of other stormwater techniques, such as infiltration and complementary application of larger-scale stormwater harvesting.
منابع مشابه
Flood protection and management: quo vadimus?
In the last decade, there have been many destructive floods in various parts of the world. Despite the extensive investment in flood control works, neither flood occurrences nor damages are decreasing. A possible consequence of climate change is an increased frequency of extreme meteorological events that may cause floods. Discussion is offered of some recent large floods in the world and of th...
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Tâ ÇÉÅ wx W|xâ Revue des Études de la Langue Française Revue semestrielle de la Faculté des Langues Étrangères de l'Université d'Ispahan Cinquième année, N° 8 Printemps-Eté 2013, ISSN 2008- 6571 ISSN électronique 2322-469X Cette revue est indexée dans: Ulrichsweb: global serials directory http://ulrichsweb.serialssolutions.com Doaj: Directory of Open Access Journals http://www.doaj.org ...
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