Aspectos hidrogeológicos do Aquífero Bauru na área urbana de Araguari, Minas Gerais

Abstract

Population growth and economic development in the region where the municipality of Araguari is located generate major challenges related to the demand for fresh water. The entire supply of water is carried out by the exploitation of underground water. In this work, data from 132 wells monitored by the Superintendence of Water and Sewage of Araguari were analyzed in order to characterize the Bauru Aquifer in relation to the productivity of the wells and the depth of the water levels. The specific capacity map of the aquifer was generated, through kriging with Alos Palsar satellite images, and the potentiometric map, through measurements of the static levels of the tubular wells.The results revealed an average depth of the static level of 24.30 meters and an average dynamic level of 43.93 meters, with an average lowering of 19.62 meters. The predominant flows varied between 10m³/h and 20m³/h, with wells presenting higher flows, mainly in the northwest region. The spatial analysis allowed identifying areas favorable to water extraction and areas that need management measures to avoid overload and contamination. The aquifer recharge areas, to the north and northwest of the city, stood out as the most suitable for the sustainable use of water resources. The study reinforces the importance of efficient management and planning of groundwater resources in Araguari. The precise delimitation of well protection perimeters, flow control and the adoption of conservationist practices are recommended to preserve the quality and availability of water in the region. These actions are essential to ensure the sustainability of water resources and protect this precious asset for future generations. The study contributes to the integrated management of water resources, providing essential information for the planning and preservation of the aquifer, ensuring adequate water supply for the local population.