International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Full Length Research Paper

Application of GIS for determination of groundwater quality suitable in crops influenced by irrigation water in the Damghan region of Iran

Shahram Ashraf1*, Hossein Afshari2 and Abdol Ghaffar Ebadi3
  1Department of Soil Science, Faculty of Agriculture, Armenian State Agrarian University, Armenia. 2Department of Agriculture, Islamic Azad University, Damghan Branch, Iran. 3Department of Biological Sciences, Islamic Azad University, Jouybar Branch, Iran.
Email: [email protected]

  •  Accepted: 12 January 2011
  •  Published: 18 February 2011



In order to evaluate the quality of groundwater in Damghan plain for irrigation purposes, 199 surveyed wells with GPS data used to produce the map. The features that generally had considered for evaluation of the suitable quality of groundwater for irrigation are salinity, water infiltration rate, and specific ion toxicity. The SAR , ions Ca2+,Mg2+, Na+, K+, CO3 2-, HCO3- , SO42- , Cl-, electrical conductivity (EC), total dissolved solids (TDS), pH  were analyze  as the evaluation indexes. The EC map indicates the presence of about 0.04% of the study area; groundwater lie in good range (none degree of restriction on use) 61.38% slight to moderate and 38.58% severe for irrigation purposes. The suitable zones for ECware in the central and northwestern and portion of south of the study area (61.42%). The quality of groundwater for the sodium hazard on infiltration is in 98.9% of study area none degree of restriction on use and in 0.6% slight to moderate and 0.5% severe. The suitable zones for infiltration have no degree of restriction on use in majority of the study area. The maps result of crops yield potential as influenced by irrigation water salinity (ECw) indicates that crops barley>wheat > Alfalfa respectively have yield potential more against ECW  in study area (99.42,92.3 and 0.23%). The results of thematic maps of sodiumw, choloridwwere overlaid with maps of sodiumplant, choloridplant showed that the crops yield potential of barley and wheat. Alfalfa in all the study area is 100%.


Key words: Geomorphological mapping, GIS, Damghan plain, total dissolved solids(TDS), electrical conductivity (EC), water standard, groundwater.