Análise Morfométrica da Bacia Hidrográfica de Pequenos Rios Litorâneos GL1 em Pernambucano

Abstract

With the population increase, especially in urban areas, which occurred after the second half of the 20th century, environmental degradation processes increased exponentially. Among the problems with this process is the non-observance of the natural characteristics of a river basin before its occupation. Based on this, morphometry allows understanding the hydrological parameters of the basin, as well as its behavior. Therefore, knowledge of morphometric parameters is extremely important to analyze the degree of environmental susceptibility of an area, and for better governance of water resources. The present study aims to analyze the morphometric parameters of the Small Coastal Rivers GL1 Hydrographic Basin in Pernambuco, which is located between the Coast and the North Forest Zone of the State. To carry out this study, theoretical research was carried out on morphometric analysis of the relief and Geoprocessing techniques were applied to map the morphometric characteristics of the studied area. Morphometric characteristics related to hypsometric, areal and linear parameters were analyzed, based on data obtained by radar imaging. It was observed from the shape factor value 0.45 and roughness index of 9.88 indicating that the study area has low susceptibility to the occurrence of floods and medium probability of erosion. It has a predominant wavy slope, with greater susceptibility to runoff than infiltration, in addition to a medium risk for erosive processes to occur.