ANÁLISE DA EROSÃO HÍDRICA NA BACIA HIDROGRÁFICA DO CÓRREGO INDAIÁ (ESTADO DE GOIÁS – BRASIL) POR MEIO DE MODELAGEM MATEMÁTICA E GEOTECNOLOGIAS

Abstract

Considering the changes caused in ecosystems, which are often negative and caused by human activities, data are needed to support public actions and policies aimed at the planning and management of water resources. The Córrego Indaiá watershed (BHCI) is located in the municipality of Rio Verde (GO), an important region for agribusiness at the national and international level. It is important to emphasize that the water body in question is a tributary of the Verdinho River, a strategic source of water capture for the supply of the municipality of Rio Verde (GO). Thus, the objective of this work was to analyze, through remote sensing products and geoprocessing techniques, the BHCI, with a view to understanding the relationships between natural physical aspects and human actions, through analysis of land use and land cover for the year 2021, of annual water erosion and for the rainy and dry seasons for the same year mentioned above (using the Universal Soil Loss Equation – USLE model). The real erosion (ER) for both analyzed periods and the annual one corresponded to more than 70% of the area for Extremely high class. The greatest results are related to areas with the presence of high values ​​of the topographic factor, to Cambisol, Ultisol, Dystrophic Red Latosol with medium texture and agricultural and pasture uses, close to water bodies. About 91.36% of the RE is concentrated in the rainy season. These results will support the planning and environmental management of this important watershed.