A GIS-BASED ASSESSMENT OF DRINKING QUALITY OF SHAHREKORD GROUNDWATER USING AN INDEX

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HESHMATI S.S.; BEIGI HARCHEGANI H.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Journal of Water and Soil Science Year:2014 | Volume:18 | Issue:69 Page(s): 179-190

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Title

A GIS-BASED ASSESSMENT OF DRINKING QUALITY OF SHAHREKORD GROUNDWATER USING AN INDEX

Author(s)

HESHMATI S.S. | BEIGI HARCHEGANI H. | Issue Writer Certificate

Keywords

SHAHREKORD AQUIFERQ2

DRINKING WATER QUALITYQ2

GWQIQ2

NORMALIZED MAPSQ2

RANK MAPSQ2

SENSITIVITY ANALYSISQ2

GISQ2

Abstract

The aim of this study was to assess the drinking quality of SHAHREKORD AQUIFER based on a GWQI (groundwater quality index) within a GIS framework. To do this, samples from 97 wells were analyzed for pH, Electrical Conductance (EC), Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Turbidity, Ca2+, Mg2+, Na+, K+, Cl-, HCO3- and SO42-, and total hardness was also calculated. These water quality parameters were geostatistically mapped. Maps showed that maximum quality of water occurs in the northwest while the lowest quality occurs in the south of aquifer. To calculate GWQI index, each map was difference-normalized and converted to a rank map. Assuming the mean value of each rank map to be the weight of corresponding parameter, a GWQI map was created with values varying from 0 (lowest) to 99 (highest quality). Mean GWQI of 84 indicates a relatively good drinking quality of water in the aquifer. However, based on the GWQI map the quality of water declines from very good (GWQI=87) in northwest to a lower quality (GWQI= 80) in southern part of the aquifer. The lower quality of water in the southern part may have been caused by industrial activities, intensive animal husbandry, presence of wastewater plant, irrigation with treated municipal effluent and also by the inward hydraulic gradient. Map removal SENSITIVITY ANALYSIS indicated that TSS and to some extent Na+ were important water parameters in this aquifer, which must be monitored with greater accuracy and frequency.

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APA: Copy

HESHMATI, S.S., & BEIGI HARCHEGANI, H.. (2014). A GIS-BASED ASSESSMENT OF DRINKING QUALITY OF SHAHREKORD GROUNDWATER USING AN INDEX. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 18(69), 179-190. SID. https://sid.ir/paper/15074/en

Vancouver: Copy

HESHMATI S.S., BEIGI HARCHEGANI H.. A GIS-BASED ASSESSMENT OF DRINKING QUALITY OF SHAHREKORD GROUNDWATER USING AN INDEX. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2014;18(69):179-190. Available from: https://sid.ir/paper/15074/en

IEEE: Copy

S.S. HESHMATI, and H. BEIGI HARCHEGANI, “A GIS-BASED ASSESSMENT OF DRINKING QUALITY OF SHAHREKORD GROUNDWATER USING AN INDEX,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 18, no. 69, pp. 179–190, 2014, [Online]. Available: https://sid.ir/paper/15074/en

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