Investigation of Well Deepening Effects on Aquifer Yeild Using Numerical Model

Document Type : Original Article

Authors

1 Graduate, Faculty of Civil Engineering, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran

2 Assistant Professor, Department of Civil Engineering, Water and Environment, Shahid Abbaspour College, Shahid Beheshti University, Tehran, Iran. Email: a_moridi@sbu.ac.ir

3 Assistant Professor, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran..

Abstract

Iran is located in a semi-arid area with in appropriate water distribution. In many parts of the country, particularly arid plane, groundwater is the main source for supplying demand. One of these areas is Aliabad plane located in Saveh catchment in which farmers have been digging deep wells for withdrawal.
Increase in withdrawal more than aquifer renewable water potential has caused operation wells efficiency to decrease due groundwater drawdown. Decreasing in gtrounwater table will lead to land settlement and will have environmentak impacts.
In order to increase the well efficiency, well deepening has been carried out. This research is dealt with simulation of excessive withdrawal on operation wells efficiency by MODFLOW. By this means conceptual model and well deepening are simulated by GMS model. Results indicate that north eastern and western regions of the aquifer have higher potential than other regions for drying up and maximum well deepening occures at about 80 meters deep. The results also show by depening the agricultural wells some parts of aquifer will dry up and leads to migration.

Keywords

Main Subjects

References

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Iran-Water Resources Research
Volume 12, Issue 4 - Serial Number 38
Special Issue on the 6th National Conference on Water Resources Management
February 2017
Pages 83-92

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History

  • Receive Date: 03 October 2016
  • Revise Date: 22 December 2016
  • Accept Date: 22 December 2016

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