Physiographic study of subbasin belonging to the Turvo-Santa Rosa-Santo Cristo River basin, Rio Grande do Sul

• Autor(a) principal: Vigolo, Morgana
• Data de Publicação: 2019
• Outros Autores: Breda, Bianca, Bortolin, Taison Anderson
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Acta Brasiliensis (Online)
• Texto Completo: http://revistas.ufcg.edu.br/ActaBra/index.php/actabra/article/view/187

The objective of this research was to determine and evaluate the physiography characteristics in the subbasin belonging to the Turvo-Santa Rosa-Santo Cristo river basin, located in the northwest in the Rio Grande do Sul State, Brazil, using GIS tools and to represent the use and occupation of the soil in the region. The sub-basin presented an area of 31.40 km2, perimeter of 34.60 km, total length of the main river of 9.96 km and a form factor of 0.40. The ordering of the rivers resulted in order 3, with a river density of 0.797 segments / km². The average slope of the main river was determined at 12.85%, with a concentration time of 2.07 hours. The sub-basin is then defined as elongated, tending through a fast flow, having satisfactory drainage and undulating landform. The main uses of the soil are associated with exposed soil and agriculture that correspond to 62.5% and native forest, with 37.52%. It is inferred that the mainly water demand is in agricultural activities and the study of hydrological behavior consists of a planning tool for water resources management.