Abstract
The goal of this work was to research the suitability of water sources for agricultural use in the Lake Hazar Basin For this purpose, samples are taken from 61 locations during the wet period and 60 locations during the dry period in 2015 and analyzed pH, electrical conductivity, calcium, magnesium, sodium, potassium, bicarbonate, chloride and sulfate parameters. Based on these analyses sodium percentage (Na%), sodium absorption ratio (SAR), residual sodium carbonate (RSC), magnesium ratio (MR), permeability index (PI) and Kelly’s ratio (KR) were calculated. Also, the usability of groundwater in agricultural activities is evaluated according to Wilcox and United States Salinity Laboratory (USSL) Diagrams. The EC, SAR, Na%, RSC, PI, KR and MR values revealed that suitability of waters as irrigation water, except for a few locations close to the lake. Similar results were obtained from classifications made according to USLL and Wilcox diagrams. The thematic maps of water quality parameters displayed that the groundwater quality decreases along the flow path from high elevations to lake level.
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