Simulation of salinity expansion upstream of Qazvin saltmarsh interception drain in conditions of ground water overexploitation

Document Type : Research Article


1 M.Sc. student of Irr. & Dra. Eng., Water Sci. & Eng. Dept., Faculty of Agri. & Natural Res. Imam Khomeini International University, Iran, Qazvin

2 Dept. of Water Sciences and Engineering, Imam Khomeini International University

3 Assistance Prof. at Water Sci. and Eng. Dept. Imam Khomeini International University.


A large part of Iran suffer from salinity which threatens sustainable agriculture and food security. Overexploitation of groundwater, where fresh and saline aquifers are adjacent to each other increasing saline water hydraulic gradient and solute transport toward fresh aquifer and increasing salinity. In Qazvin saltmarsh salinity is expanding toward upstream lands under the mentioned mechanism. An interception drain has been constructed in area in order to drive out saline water and control salinity. The purpose of this study is to assess interception drain ability in controlling salinity and the effect of hydraulic gradient increase and decrease on salinity expansion toward upstream lands. Thus first using observed data the HYDRUS-2D model was calibrated and validated. Then in six treatments, the effect of increasing and decreasing upstream input flow (10%, 20%, 30%) on drain operation in 5, 10, 15 and 20 year intervals was simulated. According to results at all time intervals, the greater the upstream inflow, the more solutes are leached out of area by interception drain. The simulation results also showed that the initial soil salinity at the drain flow decreased about 16.1 ds/m after 20 years. As upstream input flow decreases 10%, 20% and 30% this amount (16.1 ds/m) decreases 11%, 17% and 25% respectively. While increasing upstream input flow decreases salinity 22%, 28% and 40% further.


Main Subjects

]1[. Abbasi F, Tajik F. Estimation of hydraulic and solute transfer parameters in soil by in reverse solution method (field scale). Journal of Science and Technology of Agriculture and Natural Resources. 2007; 11(1):111-122 [Persian].]2[. Amiri S, Moradi M, Izadbakhsh M, Yaqubi B. Investigating the effects of groundwater level loss on groundwater Hydrualic conductivity by means of GIS. Fourth National Conference on the Application of GIS Spatial Information System in Water and Electricity Industry. 2017 [Persian].]3[. Cheraqi M, Najafi B, Shajari Sh, Javan M. Investigating the process of quantitative and qualitative change of groundwater in Sarvestan plain-Fars. Journal of watershed management research. 2020;33(2):82-96 [Persian].
]4[. Darabi H, Asadi S, Sarai Tabrizi M, Esmaeilzadeh hanjani A. Evaluating Irrigation and Drainage Sub-Network Management (Case Study: Khodaafarin Network). Water Productivity Journal (WPJ). 2020; 1 (1): 73-84.
]5[. Engineers of Saman Abrah- Kamab pars companies. Qazvin's interceptor Drain studies-authorized report. 2010[Persian].
]6[. Jafari M, Sotoodehnia A. Monitoring and modeling Qazvin central saltmarsh interception drain in order to control salinity. Thesis. 2011[Persian].]7[. Javadi A, Ranjbar A. Investigating the capability of HYDRUS model in solute transfer simulation. 13th national Hydrualic conference. 2014 [Persian].]8[. Mirzayi M, Moarefi S. Investigating the effect of water table loss on groundwater salinity case study: Kabodar ahang plain. National Conference on Water with a Clean Water Approach. 2010 [Persian].]9[. Mohammadi A, Delbari M, Mohammadi M. HYDRUS-1D model and simulation of water and solute movement in soil. Second International Plant, Soil, Climate Conference. 2013 [Persian].]10[. Ranjbar A, Rahimikhob A, Ebrahimian H, Ravipour M. Simultaneous simulation of moisture, nitrate and ammonium transfer in soil in corn furrow irrigation using HYDRUS-2D model.2017:31(2):259-276 [Persian].]11[. Ranjbar Q, Piraste anooshe H. A look at salinity research in Iran with emphasis on improving crop production. Iranian journal of crop sciences.2015;17(2):165-17 [Persian].]12[. Sejna M., Jiří Šimůnek, Van Genuchten M. User manual. Springer refrence. 2011.]13[. Shamsayi A. Hydraulic of water flow in porous media - Groundwater Engineering. 2nd vol. Tehran: Amir Kabir University of Technology Publishing Center (Polytechnic).1998. p.100-102.]14[. Sharifan F, Khazimenezhad H. Zoning and investigation of hazards due to uncontrolled abstraction of groundwater resources case study: Sarayan plain. Journal of Irrigation and water engineering. 2019;10(38):146-162 [Persian].]15[. Taqizade M, Halabian A, Alipour M, Kiyomarsi H. Identification and zoning groundwater salinity by means of GIS case study: Namdan plain. Journal of Geography and Environmental planning. 2017; 28(3):133-146 [Persian].
Volume 8, Issue 3
October 2021
Pages 641-650
  • Receive Date: 18 January 2021
  • Revise Date: 17 June 2021
  • Accept Date: 16 June 2021
  • First Publish Date: 22 June 2021