Evaluating the effect of supplying drinking water and agriculture water of Sari-Neka aquifer on the salinity movement with the utilization of Gelvard dam

Subject Areas : Farm water management with the aim of improving irrigation management indicators

mina nasiri ¹ , mehdi hamidi ² , Hamid Kardan moghaddam ³

1 - M.Sc. of Water Engineering and Hydraulic Structures, Faculty of Civil Engineering, Babol Nooshirvani University of Technology, Babol, Iran.
2 - Assistant professor of Water Engineering and Hydraulic Structures, Faculty of Civil Engineering, Babol Nooshirvani University of Technology, Babol, Iran.
3 - Assisstant Professor, Department of Water resources research, Ministry of energy, Tehran, Iran.

Received: 2019-07-26 Accepted : 2019-12-10 Published : 2020-01-21

Keywords: Groundwater, Seawater intrusion, Sari-Neka aquifer, Gelvard dam,

Abstract :

With the fast-growing economy in the coastal regions, the demands for water resources and the exploitation of groundwater have been increased. Consequently, the established balance between freshwater and seawater has been disturbed and hence resulted in extensive seawater intrusion into groundwater. In this paper, the flow model and saltwater intrusion in the Sari-Neka aquifer is simulated using the GMS model. The model is calibrated for four years Between October 2010 and September 2014, both in terms of groundwater levels and TDS concentration. The calibrated model is validated for the next year in terms of groundwater levels and TDS concentration with the available data for October 2014 and September 2015. The values of the correlation coefficient in the steady-state model, transient model and validation model in the flow model are obtained 0/99, 0/98 and 0/97 respectively. The values of the correlation coefficient in the transport model are obtained 0/83 and 0/87 in the transient model and validation model, respectively. After the validated model and assuming all the hydrogeologic conditions remain, a predictive 6-year simulation run indicates that further seawater intrusion into the coastal aquifer can occur in the study area. The effects of the Gelvard dam on the quality of groundwater in the Sari-Neka aquifer in normal, drought and wet conditions also were investigated. The results show that under drought conditions the 50% iso-concentration contour movement for TDS will increase by 5/98 %. In wet conditions, the 50% iso-concentration contour movement will be reduced by 2/94%.

References:

رضاپور، ع.، ساغروانی، ف. و احمدیفرد، ع. 1397 .مطالعه پدیده هجوم آب شور به آبخوانهای ساحلی در شرایط گذرا با استفاده از پردازش تصویر و مدلسازی عددی، نشریه هیدرولیک. 13)2(: 69-82.

شرکت مهندسین مشاور آب و خاک ،گزارش بیالن منابع آب محدوده مطالعاتی ساری- نکا. 1393 .

مهدیزاده محلی، س. و وفایی، ف. 1397 .ارزیابی شبیهسازی با رویکرد مرز مشترک در پیشبینی نفوذ شوری در آبخوانهای الیهبندی ساحلی تحت پمپاژ، فصلنامه علوم و تکنولوژی محیطزیست، 20(4): 29-49.

Abd-Elhamid, H. F. and Javadi, A. A. 2011. A density-dependant finite element model for analysis of saltwater intrusion in coastal aquifers. Journal of Hydrology, 401(3-4): 259-271.

Al-Salamah, I. S., Ghazaw, Y. M. and Ghumman, A. R. 2011. Groundwater modeling of Saq Aquifer Buraydah Al Qassim for better water management strategies. Environmental monitoring and assessment, 173(1-4): 851- 860.

Chun, J., Lim, C., Kim, D. and Kim, J. 2018. Assessing impacts of climate change and sea-level rise on seawater intrusion in a coastal aquifer. Water, 10(4):357.

Ekhmaj, A., Ezlit, Y. and Elaalem, M. 2014. The situation of seawater intrusion in Tripoli, Libya. In International conference on biological, chemical and environmental sciences, (BCES-2014).

Penang. Freeze, R. A. and Cherry, J.A .1979. Groundwater: Englewood Cliffs. New Jersey. Hamidi, M. and Sabbagh Yazdi, S.R. 2006. Numerical modeling of seawater intrusion in coastal aquifer using finite volume unstructured mesh method. WSEAS Transactions on Mathematics, 5(6): 648-655.

Hamidi, M., & Sabbagh Yazdi, S. R. 2008. Modeling of 2D density-dependent flow and transport in porous media using finite volume method. Computers & Fluids, 37(8): 1047-1055.

Hussain, M. S., Javadi, A. A. and Sherif, M. M. 2015. Three dimensional simulation of seawater intrusion in a regional coastal aquifer in UAE. Procedia Engineering, 119: 1153-1160.

Jang, C. S., Liu, C. W. and Chou, Y. L. 2012. Assessment of groundwater emergency utilization in Taipei Basin during drought. Journal of hydrology, 414: 405-412.

Kumar, C. P. 2006. Management of groundwater in salt water ingress coastal aquifers. Groundwater Modelling and Management, 540-560.

Luyun Jr, R., Momii, K. and Nakagawa, K. 2009. Laboratory-scale saltwater behavior due to subsurface cutoff wall. Journal of Hydrology, 377(3-4): 227-236.

Mansour, A.Y., Baba, A., Gunduz, O., Şimşek, C., Elçi, A., Murathan, A. and Sözbilir, H. 2017. Modeling of seawater intrusion in a coastal aquifer of Karaburun Peninsula, western Turkey. Environmental earth sciences, 76(22):775.

Mittelstet, A. R., Smolen, M. D., Fox, G. A. and Adams, D. C.2011.Comparison of Aquifer Sustainability under Groundwater Administrations in Oklahoma and Texas 1. JAWRA Journal of the American Water Resources Association, 47(2): 424-431.

Siarkos, I., Latinopoulos, D., Mallios, Z. and Latinopoulos, P. 2017. A methodological framework to assess the environmental and economic effects of injection barriers against seawater intrusion. Journal of environmental management, 193:532-40.

Sappa, G. and Coviello, M. T. 2012. Seawater Intrusion and Salinization Processes Assessment in a Multistrata Coastal Aquifer in Italy. Journal of Water Resource and Protection, 4(11): 954-966.

Zheng, C. and Wang, P. P. 1999. MT3DMS: a modular three-dimensional multispecies transport model for simulation of advection, dispersion, and chemical reactions of contaminants in groundwater systems; documentation and user's guide. Alabama Univ University.