Qualidade das águas subterrâneas associados as rochas plutônicas e metavulcano-sedimentares no município de Caçapava do Sul, RS

Abstract

This study sought the hydrochemical characterization from the inventory of tubular wells existing in the of Caçapava do Sul municipality, from the survey and interpretation of geological and hydrogeological data, in addition to the collection and analysis of samples. The study area to comprises the fracture aquifers in the Granitic Complex of the Caçapava do Sul and Metamorphic Complex Vacacaí associated with acid plutonic and metavulcano-sedimentary rocks. From the fact that the municipality is sorrounded by three hydrographic basins (Baixo Jacuí, Camaquã and Vacacaí – Vacacaí Mirim), search for understanding of the flow of these underground waters. In this study accomplished the understanding of the underground waters flow by integrated hydrogeological data obtained from SIAGAS platform, the chemical analyzed groundwater and made notes about the influences between the system water and rock. As results were obtained the hypsometry, slope, potenciometric surface and potenciometric, maps and obtained the hydrochemical classification of the underground water in the studied area. Which was saw the presence of drawdown cone, underground flow in the radial direction and was classified as calcium bicarbonate.