Diagnóstico espaço-temporal das outorgas de água para uso agroindustrial na bacia do rio Piancó-Piranhas-Açu.

Abstract

In Brazil, the instruments provided by Law 9.433 / 97 was enacted in order to regulate the water resources management process, where it established the National Water Resources Policy, having as one of its objectives to ensure the necessary and current water availability for present and future generations, in quality standards appropriate to the respective uses, adopting the following elements as instruments: the Water Resources Plans; the classification of water in classes, according to the predominant uses of water; the granting of rights to use water resources; charging for the use of water resources, among others. In this sense, the present study aims to analyze temporally and spatially the Water permits granted in the Piancó-Piranhas-Açu River Basin, issued by the State of Rio Grande do Norte, considering their agro-industrial uses. The study has a quantitative and exploratory methodological approach and was used as a research technique, the documentary with analysis of secondary data, provided by the granting body of the Waters permits granted in the States of Rio Grande do Norte, IGARN. There were 488 water permits granted identified, the year 2017 with the largest number of grants, with the predominance of the use of irrigation, with 73.57% of the granting emissions, regarding the types of abstraction, 64% were issued to underground waters and 36% for surface waters, while for flow values, these values are inverted, 63.82% of the flows granted were for surface sources and 36.18% for underground flows. The diversified uses stand out in the Middle Piranhas Potiguar region, concentrating most of the multiple uses, with a greater concentration of the use of irrigation.