Análise Morfométrica Da Bacia Hidrográfica Do Rio Carapiranga Em Registro (Sp), Brasil, Por Meio De Técnicas De Geoprocessamento

Abstract

The hydrographic basins are of great importance in environmental studies, as their components are interconnected and the alteration in any of them can generate a great impact in the region in which it is located. Therefore, this research aimed to analyze morphometrically the Carapiranga river watershed, located in the municipality Registro (SP), Brazil, using geoprocessing techniques to obtain physical data of the watershed that support management and planning actions. For this, the geoprocessing techniques used topographic maps provided by the Geographical and Cartographic Institute (GCI) to perform the morphometric analysis. The results showed that the watershed covers an area of 68.88 km², a perimeter of 75.71 km, has a more elongated, and less circular shape, and the watercourse presents up to the 4th order. The parameters of circularity index (0.17), compactness coefficient (2.39), and sinuosity index (1.24) demonstrated that the basin has good drainage, as it has medium permeability and high infiltration. It is noteworthy that the roughness coefficient indicates that a large part of the basin is suitable for agriculture, main economic activity of the region, especially banana production, as this basin does not have areas with steep slopes, which attenuates water erosion.