Determining the Groundwater Quality Protection Zone by Considering the Vulnerability of Aquifer

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Ghadir Zamani M.; MORIDI A.; YAZDI J.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2020 | Volume:16 | Issue:1 Page(s): 1-16

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Title

Determining the Groundwater Quality Protection Zone by Considering the Vulnerability of Aquifer

Author(s)

Ghadir Zamani M. | MORIDI A. | YAZDI J. | Issue Writer Certificate

Keywords

DRASTICQ1

WhAEM2000Q1

MODFLOWQ1

Aquifer VulnerabilityQ1

GMSQ2

Abstract

In most areas, most of the drinking water supplies from groundwater resources, is constantly threatened by various pollutants. In this paper, the groundwater quality protection zone is defined using MODFLOW, WhAEM2000 and DRASTIC models. In this research at the beginning, the conceptual model of Rudan plain aquifer has been made by MODFLOW model and the values of recharge, Hydraulic conductivity and value of Specific yield coefficient has been calibrated. Steady model for 1389-90 blue year and also unsteady model for 1389-91 blue years was made as the root mean square error for steady model was equal to 1. 49 and for unsteady model 2. 32. Then, the groundwater quality protection zone is determined by using WhAEM2000 model in both constant radius and analytical methods. Finally, the vulnerability level of the aquifer was identified and considered for determining the protection zone area. Results showed that most of the wells are located in the highly vulnerable zone with agricultural land use. So, Because of the high risk of groundwater pollution, extra travel time for groundwater (about 10 years) must be considered for determination of protection zone. Also, for less vulnerable areas and other land use areas, a smaller protection area can be applied, since the application of greater zone in these areas will lead to a lot of social and economic costs. Based on previous studies, the main challenge for using the WhAEM2000 model to determine the protection zone of water quality for drinking wells is to determine the precise values of aquifer specifications and the basis for judging the travel time of pollution in the aquifer. In this paper, using a calibrated groundwater model in GMS software, and also determining the vulnerability of aquifer using the DRASTIC model, attempts have been made to determine more precisely the protection zone. Finally, according to the stated points, three immediate protection zones, mandatory and protective zones were determined for drinking water wells.

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APA: Copy

Ghadir Zamani, M., MORIDI, A., & YAZDI, J.. (2020). Determining the Groundwater Quality Protection Zone by Considering the Vulnerability of Aquifer. IRAN-WATER RESOURCES RESEARCH, 16(1 ), 1-16. SID. https://sid.ir/paper/377854/en

Vancouver: Copy

Ghadir Zamani M., MORIDI A., YAZDI J.. Determining the Groundwater Quality Protection Zone by Considering the Vulnerability of Aquifer. IRAN-WATER RESOURCES RESEARCH[Internet]. 2020;16(1 ):1-16. Available from: https://sid.ir/paper/377854/en

IEEE: Copy

M. Ghadir Zamani, A. MORIDI, and J. YAZDI, “Determining the Groundwater Quality Protection Zone by Considering the Vulnerability of Aquifer,” IRAN-WATER RESOURCES RESEARCH, vol. 16, no. 1 , pp. 1–16, 2020, [Online]. Available: https://sid.ir/paper/377854/en

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