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The Maramureș County is well-known as a strongly influenced area by mining exploitation of non-ferrous ores. To assess the Natech risk associated to tailing ponds in relation to climatic conditions and in particular to the rainfall in the area, four ponds with transboundary pollution potential were considered, namely: Aurul tailing pond, Novăț tailing pond, Colbu 1 tailing pond and Colbu 2 tailing pond. In the methodology for the preliminary hazards analysis both historical accidents during 2000-2010 period and the conditions related to the construction and location of the tailing ponds were taken into account. Since the Novăț taling pond, Colbu 1 tailing pond and Colbu 2 tailing pond are now preserved and permanently post-closure monitored, the transboundary risk has been estimated as being low. In these circumstances the Natech risk has been assessed only for the Aurul tailing pond which, at the present, is the only one active tailing pond in Maramureș Coun1 Correspondence to: irina.smical@yahoo.com УДК: 504:622.864(498.41) doi: 10.5937/zrgfub1563031N Collection of Papers –Faculty of Geography at the University of Belgrade 63 32 ty. The assessment results revealed a medium-high risk associated to the extreme meteo-climatic phenomena influenced by the regional climate changes.

The Natech risk associated to mining activity in Maramureş county, Romania