Qualidade da água e influência do uso e cobertura da terra nas nascentes da bacia hidrográfica do Rio Abauna, em Getúlio Vargas, RS

Abstract

The quality of the spring water from one river basin dependent on numerous factors, whether natural or anthropogenic. Thus, this research aims to analyze the water quality parameters and the influence of land use and land cover in the springs in the river basin Abaúna, on the assumption that the areas of springs, mostly are degraded. The methodology made it possible to analyze the aquatic and terrestrial environment so as to achieve integration between the different uses and land cover and water parameters. For this, we used the satellite image Landsat 8, for that survey land use and land cover. The water parameters were: total suspended solids (TSS), water temperature (Temp.); hydrogen potential (pH); dissolved oxygen (DO), turbidity and total coliforms. From the integrated assessment of aquatic and terrestrial environment, it was found that the water from most sources falls within the CONAMA standards, but not for human consumption and it became clear that the uses are not in accordance with the standards of the Forest Code Federal. Therefore, the uses are interfering in water quality by altering the physical, chemical and bacteriological. To improve the water quality of the springs and the entire watershed is important to implement the use of alternative and land cover for the preservation and restoration of riparian vegetation.