Regional Symposium on Innovation in science and technology

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Study the drinking and irrigation water quality in a dam basin; case study, Shirin Darreh dam, NE Iran

Authors :

Maryam Tajbakhshian¹ Mohammad Hossein Mahmudy Gharaei² Abolfazl Mosaedi³ Reza Moussavi Harami⁴

1- دانشگاه فردوسی مشهد 2- دانشگاه فردوسی مشهد 3- دانشگاه فردوسی مشهد 4- دانشگاه فردوسی مشهد

Keywords :

Shirin Darreh Dam،irrigation،drinking،electrical conductivity

Abstract :

In this study quality of 13 water samples, gathered from Shirin Darreh dam basin, NE Iran, (6 well waters, 6 spring waters, 1 dam reservoir) was determined for irrigation and drinking purposes. pH, electrical conductivity (EC), total dissolved solids (TDS), and main cations and anions were determined, and salinity (EC), sodium hazard (sodium percentage (SP) and Kelley’s ratio (KR)) and carbonate hazard (residual sodium carbonate (RSC) and residual sodium bicarbonate (RSBC) were used to assess irrigation quality. Water quality for drinking was specified based on WQIDD. Mainly, water samples were doubtful, good, suitable, and good based on EC, SP, KR, RSC, and were equally good and doubtful according to RSBC. WQIDD showed most of the water samples (54%) were poor qualified for drinking. Geological content of the study basin generally composed of soluble materials can be regarded as the most important factor to release the main ions to the water and decrease the water quality to irrigation and drinking purposes.