Due to tragic accidents related to the failure of tailings dams in Minas Gerais, the disposal of tailings in dams has become an increasingly urgent topic of discussion, especially in relation to the risks associated with this approach. Consequently, mining companies have sought to implement alternative methods for managing tailings resulting from their operations. However, in this direction, the work analyzes the level of the environmental impact in the area of influence of tailings dams in the municipality of Poconé – MT, identifying the major damages that can be caused by a tailings dam rupture. To this end, maps of environmental impacts on the selected dams were created, using the software QGIS, also known as Quantum GIS. The Kernel method was also used, which is an analytical approach that is frequently applied in the assessment of risks and environmental sensitivity in relation to mining tailings dams. The results of the research revealed that throughout the work it was possible to observe that the mining tailings dams existing in the municipal limit of Poconé/MT are defined as structures that promote a “very high” environmental impact, mainly in the urban area than if it occurs the rupture could affect legal preservation areas and the city's drainage system, thus impacting the life of the community in general. With the data obtained, it was possible to analyze the environmental impact of tailings dams on local communities, including the possible relocation of families, access to drinking
water and the health of people living nearby. Therefore, the analysis of the environmental impact in the area of influence of tailings dams in Poconé, Mato Grosso, is a crucial part of the responsible management process of mining activities, as it can help develop strategies to mitigate these impacts and ensure the protection of the
environment.
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