Impactos ambientais da urbanização na dinâmica dos Sistemas fluviais no perímetro urbano de Jandaia do Sul/PR

Abstract

The aim of this dissertation is to identify the mismatches and degree of alteration in the morphology of the river courses located in the urban area of Jandaia do Sul, in the north of the state of Paraná, using the method of hydraulic geometry at full bank level, applied to five river courses located in the urban area of the municipality of Jandaia do Sul: Córrego Marumbi, Cambará, Rochedo, Lapuna and Siriema. The measurement points were traversed and mapped, totaling seventy-five cross-sections distributed in the river courses of the study area. The theory of hydraulic geometry proposes the analysis of the behavior of the following variables: width (Wmp), depth (Dmp) and cross-sectional area (Amp). The methodological procedures are qualitative and quantitative, based on the analysis of theoretical references, combined with fieldwork. Based on the results obtained from the analysis of the cross-sections, it was identified that the river stretches studied show changes in their geometric properties. The data obtained for each variable (Wmp: 0.345, Dmp: 0.129 and Amp: 0.384) show a low correlation coefficient, which is associated with the process of urbanization and the increase in soil sealing. This reduces infiltration and increases surface runoff, thus altering the morphology of river courses. These results are important for understanding the impacts of urbanization on river courses and can contribute to the development of management and conservation strategies for these water resources in urban areas.