Repository of Research and Investigative Information

Repository of Research and Investigative Information

Hormozgan University of Medical Sciences

Groundwater quality and nitrate pollution modeling: an integrated study of contour mapping and geographic information system

(2016) Groundwater quality and nitrate pollution modeling: an integrated study of contour mapping and geographic information system. Desalination and Water Treatment.

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Abstract

In this study, the water quality of 50 wells in Rumeshgan, which is in western Iran, was evaluated using a water quality index and a nitrate pollution index (NPI). Final obtained results were delineated by geographic information system contour mapping. Different ordinary kriging models (spherical, exponential, Gaussian, circular, and linear) were used to forecast the groundwater quality index (GWQI) and the NPI of un-sampled points in the studied area. Results showed that about 50 of the studied wells had excellent water quality (GWQI < 50), 40 had good water quality (50 ≦ GWQI < 100), while only 10 were determined to be in the poor or very poor category (100 ≦ GWQI). Three wells had significant pollution, and they are located in the southwest part of the study area. The linear model (with a root-mean-square error of 1.07) was chosen as the best-fit model. The contour maps show that the spatial distribution of groundwater quality can also be used approximately to estimate suitable locations for new wells containing minimum harmful contaminants. © 2016 Balaban Desalination Publications. All rights reserved.

Item Type: Article
Additional Information: cited By 0
Keywords: contour map; GIS; groundwater; groundwater pollution; integrated approach; kriging; modeling; nitrate; water quality; well water, Iran; Rumeshgan
Subjects: WA Public Health > WA 670-847 Environmental Pollution. Sanitation
Divisions: Education Vice-Chancellor Department > Faculty of Health > Department of Environmental Health Engineering
Depositing User: مهندس هدی فهیم پور
URI: http://eprints.hums.ac.ir/id/eprint/3884

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