Planejamento urbano sensível aos recursos hídricos: análise a partir do metabolismo urbano e da produção do espaço em Campina Grande-PB.

Abstract

Urban planning integrated to water resources is still not widespread in cities, although it is necessary, considering that urban systems rely, mostly, on a single source of water supply, usually outside their boundaries. Campina Grande, a medium-sized city in the Brazilian semi-arid, object of study of this dissertation, is an expression of this disarticulation, having, historically, experienced crises related to the water availability for its various urban uses. The aim of this work is to present possibilities of increasing urban sensitivity in relation to water resources, from the understanding of urban metabolism and the impacts of space production on this metabolism. Two analyzes of the urban space were carried out: the first is related to the hydrological performance, in which the water diversification potentials are raised by developing quantitative indicators and by the generation of possible scenarios for diversification; the second refers to the space production, in which a historical survey of the access conditions to water in the studied city is carried out. The space production process is verified, and the impact of this process on the water resources. In more detail, it is noted the correlations between the agents and the spatial transformations, in order to identify the associations that command these transformations, being the object of this analysis Catolé neighborhood, due to the expressive spatial transformations that it presented in the last 20 years. Results showed a potential of 243.60% for diversification by using rainwater, and 68.90% by reusing wastewater. Also, by the combination of possibilities of water diversification, the supply system, which is currently fully centralized, could have this centralization reduced to 57.19%. Therefore, the importance of the municipality's role in the management of water resources is emphasized. However, the analysis carried out in Catolé reveals a growing decrease in the role of the state, as a regulator of space processes. Real-Estate Developers and landowners condition spatial dynamics to their speculative interests. This situation makes it difficult to improve urban hydrological performance. Finally, guidelines indicating possible measures to be adopted in the city to direct it to a greater sensitivity to water resources are presented.