Environmental Risk Assessment in the Masrik River Basin
AbstractThe purpose of this study is to assess the environmental risks of water pollutionin the Masrik River catchment area. The risk assessment studies are based on the results of thehydrochemical monitoring of the Masrik River Basin water quality in 2012‒2014. The main riskfactors for pollution of the river basin area are mining, agriculture, uncontrolled utility flows.Zoning was performed and areas of zones were calculated using a digital elevation model (DEM)in the ArcGIS software environment and taking into account sampling points and river basins. Atthe same time, the territory was ranked by population density. Then a geodatabase (GDB) wascompiled. GDB presents the point assessments of the state of river waters according to the level ofthe pollutant concentration factor and population density. The thematic layers based on the resultsof the indicators in the ArcGIS program were compiled. A map was obtained according to a pointassessment of environmental risk. An integrated assessment of river water pollution was carriedout in different parts of the basin. The population density and total risk index were calculated. Thethree risk zones were identified in the river basin: high, medium and low. In addition to presentingtheoretical value, the conclusions are also of practical importance and can be used in the developmentof river basin risk management programs, measures for quality management and control ofpollution sources in the aread.
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