Influência da urbanização na geração de escoamento superficial da Bacia Hidrográfica do Rio Cuiá, João Pessoa, Paraíba, Brasil

Abstract

The process of urbanization in Brazilian cities caused, through the increase of the population, drastic changes in the physical space of the city. Precarious urban planning contributes to the disorganization of the physical space causing economic, social and environmental problems, such as increase in river flow levels increase, growth of solid waste production and loss of water quality. This work will be focusing on hydrological nature problems, specifically floods, with the objective of analyzing the influence of different scenarios of land use and occupation in the generation of surface runoff in the Cuiá river basin, João Pessoa, PB, Brazil, area with population agglomerations and recurrence of floods events. To do so, a Decision Support System tool, the software ABC6, will be used to facilitate the application of hydrological models in the area of study in order to obtain hydrographs corresponding to different land use and occupation scenarios. The models used for such analysis are the SCS Effective Precipitation and SCS Triangular Synthetic Unit Hydrographs, both embedded in ABC6. Studies such as this are important to support urban drainage management decisions, in order to know what better control measures apply to the situation. It has been seen that the process of urbanization of a natural area profoundly affects the urban hydrological cycle making the urban environment more vulnerable to rainfall events with high rainfall rates.