Impact evaluation of drought on EC and SAR in seven hydrometric stations along the Dez River

Subject Areas : water resource management

سعید آزیش ¹ , علی عصاره ² , داود خدادادی دهکردی ³

1 -
2 -
3 -

Received: 2020-07-10 Accepted : 2021-04-21 Published : 2019-06-01

Keywords: خشکسالی, شوری, رودخانه دز, Dez River, drought, نسبت جذب سدیم, salinity, Sodium absorption ratio,

Abstract :

In this study, the effects of drought on EC and SAR doses were investigated. Seven hydrometric stations were selected along the river and ten year qualitative water data (from 2004-2014) from Khuzestan Water and Power Organization and meteorological statistics. The results showed that the most severe droughts in Hosseiniyeh and Dezful stations took place in 2008 and at Shoosh Station in 2011. In the definite years, drought index to average of long term, in the sepid dasht e of Caesar, Sepid Dasht Zaz, Tang-e-5 Caesars, Tang-e-5 Bakhtiari, Dezful, harmaleh and Bamdej stations was 3.74, 15.3, 11.67, 22.16, 10.59, 5.28 and 37098 respectively. Also among the seven stations, the highest percentage of SAR in dry years was at Dezful station with 50%.