Assessment the Specific Yield Optimal Value and Groundwater Recharge Estimate of Unconfined Aquifer on Golgir plain, Khuzestan Province

Document Type : Research Article

Authors

1 Ph.D. Student, Earth Sciences Faculty, Shahid Chamran University, Ahvaz, Iran

2 Professor, Earth Sciences Faculty, Shahid Chamran University, Ahvaz, Iran

Abstract

The water table fluctuation (WTF) method is based on rises of a water table are caused by recharging groundwater. To apply this method, an appropriate estimate of the specific yield in the zone of the groundwater level fluctuation is required. In this paper, the specific yield are estimated these methods include Drilling Well Logs (DWL), Envelope Straight Line (ESL) and Vertical Electrical Sounding (VES) method. To evaluate and choosing the best method, specific yields value by hydrologic and hydrogeological data during eight years (2006 to 2013) of Golgir plain with correlation coefficient between recharge-rainfall and recharge-baseflow in ESL method respectively was obtained r2=0.79 and r2=0.90. Also, attention to appropriate correlation coefficient in ESL method the specific yield optimized amount equal 0.12 for Golgir plain estimated. The coefficient correlation obtained from the relation between recharge groundwater value, base flow, and rainfall by using DWL, ESL and VES methods indicated that ESL method with r2=90 is the best method to estimate the specific yield. Hence, attention to importance of recharge value in planning and management of groundwater and high affection of specific yield value in WTF method, groundwater recharge estimation by using specific yield optimal value help to the water science researchers.

Keywords

References

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Iranian journal of Ecohydrology
Volume 4, Issue 4
January 2018
Pages 969-981

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History

  • Receive Date: 29 January 2017
  • Revise Date: 14 May 2017
  • Accept Date: 21 May 2017
  • First Publish Date: 22 December 2017
  • Publish Date: 22 December 2017

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