qualitative assessment of groundwater for agriculture and industrypurposesin sahra bagh plain,larestan, iran

groundwaterqualityassessmentandmappingquality parametersto assesstheresource fordifferent purposesis important.the purposeofthisstudy was toevaluate the qualityof groundwatersahra bagh plainandmapping itfordifferentpurposes.forthispurpose, thegroundwaterquality datafrom (1382 to 1392)wasused. inthisstudy,to evaluate effect ofwater scaling and corrosion from lanzlyh saturation and stability ryznar indexes were used andwater quality parameterssuch ascations (calcium, magnesium, sodiumandpotassium) andanions(chlorideand bicarbonate), andotherrelevant indicatorssuch astds, th and sarwereevaluated.the results show that the mean of lsi index of this plain aquiferwas 0.48, so deposition potential of this ground water is moderate.the mean of rsi index of sahara bagh aquifer was 6.4, so corrosive potential of this ground water is low.lsi coefficient of variationis larger than the rsi coefficient of variation also,probablysaid that rsi index is sensitive compared index lsi.averageamount of ec insahra bagh aquifer’s is 6978μs / that it isin a classof non-quality groundwaterforirrigation and amount of ph in the plain aquifer's was alkaline and varies from a minimum of 7 to a maximum of 7/5. averageamount of tds in this aquiferis493 mg / lthat it is in a classof non-quality groundwaterfor irrigationinsahra bagh.as well ascalcium, potassium and sodium were dominantcationsof this aquifer.