Simulating the Rehabilitation of an Over-Extracted Aquifer by Different Management Scenarios in the Ravansar-Sanjajabi Catchment in Kermanshah

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PORHEMMAT J.; Altafi Dadgar M.; Porhemmat R.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2019 | Volume:14 | Issue:5 Page(s): 149-163

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Title

Simulating the Rehabilitation of an Over-Extracted Aquifer by Different Management Scenarios in the Ravansar-Sanjajabi Catchment in Kermanshah

Author(s)

PORHEMMAT J. | Altafi Dadgar M. | Porhemmat R. | Issue Writer Certificate

Keywords

Management ScenariosQ1

ModelingQ2

Over-ExtractionQ1

Ravansar-SanjabiQ1

MODFLOW ModelQ1

Abstract

Rising water demands and Over-Extraction of groundwater have caused critical status in more than 50% of the aquifers in Iran. Simulating complex condition of such aquifers and selecting an appropriate management approach are required to compensate drawdown. Therefore, this study aimed to provide a management approach for the Ravansar-Sanjabi aquifer in Kermanshah, an aquifer under a severe stress during last decades, using the MODFLOW Model. After calibrating and evaluating the model, as well as providing a spatial distribution map for the actual drawdown during the period of 2007-2015, the aquifer is divided into four drawdown zones, including 0 to 5, 5 to 10, 10 to 20, and 20 to 45 meters. Several options of combining scenarios were then applied to compensate the drawdown in each of the zones. The first scenario included the continuation of the last eight-year condition of sources, sinks and recharge of the aquifer, which resulted in a 7. 2 m decline during the next eight years. In the second and third scenarios, with the effects of drought and wet conditions, the results showed that groundwater level would decline by 8. 4 and 5. 2 m, respectively. The results of the first three scenarios showed that the effect of climate fluctuations is not the main factor affecting the groundwater level decline. In the fourth scenario different combinations of 10% to 70% reduction in pumping rates were applied and the results showed that the combination of 10% reduction in zone1 and 20% reduction in other zones provides the best results in improving aquifer conditions.

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APA: Copy

PORHEMMAT, J., Altafi Dadgar, M., & Porhemmat, R.. (2019). Simulating the Rehabilitation of an Over-Extracted Aquifer by Different Management Scenarios in the Ravansar-Sanjajabi Catchment in Kermanshah. IRAN-WATER RESOURCES RESEARCH, 14(5 ), 149-163. SID. https://sid.ir/paper/100209/en

Vancouver: Copy

PORHEMMAT J., Altafi Dadgar M., Porhemmat R.. Simulating the Rehabilitation of an Over-Extracted Aquifer by Different Management Scenarios in the Ravansar-Sanjajabi Catchment in Kermanshah. IRAN-WATER RESOURCES RESEARCH[Internet]. 2019;14(5 ):149-163. Available from: https://sid.ir/paper/100209/en

IEEE: Copy

J. PORHEMMAT, M. Altafi Dadgar, and R. Porhemmat, “Simulating the Rehabilitation of an Over-Extracted Aquifer by Different Management Scenarios in the Ravansar-Sanjajabi Catchment in Kermanshah,” IRAN-WATER RESOURCES RESEARCH, vol. 14, no. 5 , pp. 149–163, 2019, [Online]. Available: https://sid.ir/paper/100209/en

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