Land use and its influence on the volume of water in the Biguaçu’s/SC watershed

Abstract

This study aimed to identify the conditions that promote changes in the volume of water in the Biguaçu’s/SC watershed in according with changes in use and land cover. The methodology has included the collection of rainfall data, the mapping of land use and cover to the years 1982 and 2014 and the current rectilineared river channels, as well as has estimated runoff for this study area without continuous hydrological records. The results show that the conditions that promote this are socionaturals indicating the variability of rainfall associated to the restriction of forest area only the middle and upper river course, the expansion of non-covered and urbanized areas in the lower course and the creation of river stretches rectilineared. Finally, recommendations are presented to the future expansion scenario of urban agglomeration of Florianópolis conurbation over the valley.