Avaliação da segurança hídrica em cidades: o caso de Fortaleza

Abstract

This article evaluates the quantitative water security in cities in order to promote the development of methods and practices of drought management. For this, it was divided in two steps: analysis of the vulnerabilities of the supply system and the discussion on the ways to promote water security. The vulnerability was analyzed by the failure frequency criteria of the demands and the accumulation of the reservoirs using a flow network model for the simulation of the water system. To promote water security is suggested an application of an integrated urban water management model based on an array of alternative sources of supply and water demand management. This would make it possible to reduce the structural dependency of the urban center for the importation of water from other regions and thus reduce transport and pumping costs. In addition, this new approach would integrate water supply, sewage and urban drainage systems, modifying traditional water management, fragmented into its components for an integrated management that allows flexibility in systems.