Avaliação do uso atual e potencial do Sistema Aquífero Guarani (SAG) na bacia do rio Pardo no estado de São Paulo

Abstract

The management of water resources is fundamental for society to guarantee water, be it quantity as well as quality, for which research on the use of water is fundamental and is being done frequently lately. The study of water use in the Pardo River Basin, Water Resources Management Unit 4 (UGRH 4), aims at an analysis of the use of groundwater of the Guarani Aquifer System (SAG) in the region. Thus, data from 362 deep tubular wells that capture the waters of the SAG were used for various types of use, be they industrial, urban, domestic, leisure, irrigation, public, among others. The geographic information system (GIS) was used to manipulate specialized data. Of the 362 registered wells surveyed, more than half are for urban use, that in volume data represents about 74% of the total water withdrawn. The total average per capt water consumption is 116 m3 / year in the region, that is, approximately 318 l / inhab / day. Comparisons were made with current use and estimated consumption by the future population. Comparisons were made with current use and estimated consumption by the future population, where the total current consumption use is approximately 1.43x107 m3 /year, and the production is 6.26x108 m3 / year. If the estimated consumption is based on population projection and current per capita consumption, the population consumption in 2025 will be 1.14x106 / m3, in 2030, 1.16x106 / m3, and in 2035 1.17x106/ m3.