Iulia Elena FONTANINE, Romulus Dumitru COSTACHE


The potential for water diffuse pollution with heavy metals in Arieș river basin. Arieș river basin is found mostly in the area of mining extractions from Apuseni Mountains. Its position causes a high vulnerability of water courses to pollution with heavy metals derived from mine waters. In this sutdy, in order to determine the potential for water diffuse pollution in Arieș river basin, two main factors were integrated in GIS software, respectively: the potential for surface runoff and the localization of the sources of water pollution with heavy metals (quarries, mines, blank depositions, decantation ponds). The highlighting of the potential for water diffuse pollution was achieved by computing the DPPI index for each river sub-basin. The index was computed by multiplying the average values of the Flash-Flood Susceptibility Index for each river sub-basin by the number of difuse pollution sources (quarries, mines, blank depositions, decantation ponds) within the sub-basin units. The results relieved that the most exposed areas to pollution correspond to water courses from Valea Șesei, Roșia Montană, Valea Buciumanilor river basins and implicitly Abrud river basin, which contains the last two mentioned river basins. The validation of the results was performed by  consulting the data reports offered by the Agency for Environmental Protection from Alba county, which confirm the severe water pollution with heavy metals.


Arieș, FFSI, DPPI, diffuse pollution, GIS

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ISSN: 1223-5334; eISSN: 2284-6379. Published in Romania




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