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Groundwater, unseen by humanity, is a strategic resource for dealing with droughts caused by climate change, a problem exacerbated by a lack of governance and monitoring. This study consulted the SIAGAS (Groundwater Information System) database for the municipalities in the Paranapanema basin (SP and PR) to assess the number of licensed wells and their characteristics (monitoring, exploitation and maintenance). The aim was to analyze the Paranapanema basin and the occurrence of wells in the municipalities, since not knowing about them leads to misuse and increases the risk of contamination. The clandestine condition masks the environmental value of groundwater, since it is not known exactly how much is extracted or whether there is contamination. This work therefore advocates integrated management of the hydrological cycle, i.e. studying the two types of associated reservoirs.
Silva et al. (Wed,) studied this question.
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