THEME 5: URBAN WATER MANAGEMENT
Title: Resilience, from metaphor to operational indicators
by Prof. Farhad Yazdandoost
Resistance is defined as the ability of a system to withstand a disturbance without any reaction, and resilience as the ability of a system to recover easily from a reaction to a disturbance. As a metaphor, resilience may be related to sustainability while in engineering practices it often implies quantifying practical/operational indicators by which levels and modes of resiliency may be assessed and achieved.
The system may be defined as the socio-economic and/or physical characteristics of a basin where disturbances may affect the normal socio-economic and natural functioning of the society and the ecosystem. Conventional engineering approaches may be ideally addressed from a resilient perspective and as such urban drainage systems and water distribution networks have been under growing consideration from this viewpoint.