Water quality evaluation and trend analysis in the Qareh Sou Basin, Iran

Kurdi, Milad; Eslamkish, Taymor; Seyedali, M.; Ferdows, Mohammad Shahi

doi:10.1007/s12665-014-3975-1

Cited by 6 publications

(1 citation statement)

References 16 publications

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“…SO 4 2− concentrations were within range of concentrations in natural waters (Chapman, 1996). SO 4 2− is naturally present in surface waters though it can arise from the atmospheric deposition of oceanic aerosols, leaching of sulphur compounds, from sedimentary rocks, and industrial and atmospheric precipitation can add significant amounts of SO 4 2− to surface waters (Kurdi et al, 2015).…”

Section: Major Ions and Their Seasonal Variationmentioning

confidence: 67%

Major Ion Chemistry of the Bheri (Snow-Fed) and the Babai (Rain-Fed) River Systems in Western Nepal: Implication on Water Quality

Khatri¹,

Gurung²,

Jha³

et al. 2023

Environ. Nat. Resour. J.

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Inter Basin Water Transfer (IBWT) is a water resource stressor globally with negative environmental impacts. This study describes the major ions and hydrochemistry of the first ever ongoing IBWT from snow-fed Bheri River to rain-fed Babai River in Western Nepal. Water samples from 10 sites, five from each river system, were collected in HDPE bottles for major ions (Ca^(2+), Mg^(2+), Na^+, K^+, HCO_3^-, Cl^-, SO_4^(2-), NO_3^-, CO_3^(2-)) along with the estimation of pH, temperature and conductivity encompassing winter, spring, summer, and autumn in 2018. Ca^(2+)and HCO_3^- were the most dominant cation and anion, respectively, with 〖Ca-Mg-HCO〗_3 water type in both the river systems. Mann Whitney test revealed significant variation (p<0.05) between the two river systems with regard to Ca^(2+), Mg^(2+), HCO_3^- , and SO_4^(2-). Kruskall Wallis test revealed significant variations between seasons in pH, temperature, Na^+, K^+, and Cl^- in Bheri River system, and in pH, TDS, temperature, Na^+, K^+ , Cl^- and SO_4^(2-) in Babai River system. Carbonate weathering was the main mechanism of ionic sources with insignificant contribution from silicate weathering. Relatively higher concentrations of the major ions during the dry seasons probably indicate the dilution effect of monsoon. Higher concentrations of the ions in the Babai River system reflect the latter’s bedrock geology with susceptibility to erosion. With Nepal’s future plans of IBWTs and their environmental implications, this finding could be helpful in mitigating the negative consequences of IBWTs in the impact assessment and management of IBWT projects because of their implications on management of aquatic resources.

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Section: Major Ions and Their Seasonal Variationmentioning

confidence: 67%

Major Ion Chemistry of the Bheri (Snow-Fed) and the Babai (Rain-Fed) River Systems in Western Nepal: Implication on Water Quality

Khatri¹,

Gurung²,

Jha³

et al. 2023

Environ. Nat. Resour. J.

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Numerical modeling of general circulation, thermohaline structure, and residence time in Gorgan Bay, Iran

Ranjbar

Zaker

2017

Ocean Dynamics

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Estimation of environmental capacity of phosphorus in Gorgan Bay, Iran, via a 3D ecological-hydrodynamic model

Ranjbar

Zaker

2016

Environ Monit Assess

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Gorgan Bay is a semi-enclosed basin located in the southeast of the Caspian Sea in Iran and is an important marine habitat for fish and seabirds. In the present study, the environmental capacity of phosphorus in Gorgan Bay was estimated using a 3D ecological-hydrodynamic numerical model and a linear programming model. The distribution of phosphorus, simulated by the numerical model, was used as an index for the occurrence of eutrophication and to determine the water quality response field of each of the pollution sources. The linear programming model was used to calculate and allocate the total maximum allowable loads of phosphorus to each of the pollution sources in a way that eutrophication be prevented and at the same time maximum environmental capacity be achieved. In addition, the effect of an artificial inlet on the environmental capacity of the bay was investigated. Observations of surface currents in Gorgan Bay were made by GPS-tracked surface drifters to provide data for calibration and verification of numerical modeling. Drifters were deployed at five different points across the bay over a period of 5 days. The results indicated that the annual environmental capacity of phosphorus is approximately 141 t if a concentration of 0.0477 mg/l for phosphorus is set as the water quality criterion. Creating an artificial inlet with a width of 1 km in the western part of the bay would result in a threefold increase in the environmental capacity of the study area.

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Water quality evaluation and trend analysis in the Qareh Sou Basin, Iran

Cited by 6 publications

References 16 publications

Major Ion Chemistry of the Bheri (Snow-Fed) and the Babai (Rain-Fed) River Systems in Western Nepal: Implication on Water Quality

Major Ion Chemistry of the Bheri (Snow-Fed) and the Babai (Rain-Fed) River Systems in Western Nepal: Implication on Water Quality

Numerical modeling of general circulation, thermohaline structure, and residence time in Gorgan Bay, Iran

Estimation of environmental capacity of phosphorus in Gorgan Bay, Iran, via a 3D ecological-hydrodynamic model

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