Water quality and solute sources in the Marsyangdi River system of Higher Himalayan range (West-Central Nepal)

Ghezzi, Lisa; Iaccarino, Salvatore; Carosi, Rodolfo; Montomoli, Chiara; Simonetti, Matteo; Paudyal, Kabi Raj; Cidu, Rosa; Petrini, Riccardo

doi:10.1016/j.scitotenv.2019.04.363

Cited by 16 publications

(3 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since carbonate has higher solubility, it produces more calcium (Ca 2+ ) and magnesium (Mg 2+ ) than silicate under natural conditions. Similarly, based on the ternary plot, Wolff-Boenish et al (2009) also observed the predominance of calcium and magnesium in TSS and GHS-drained watersheds, which was supported byGhezzi et al (2019) on the basis of the dominance of Mg 2+ and Ca 2+ and, to a lesser extent, HCO 3…”

mentioning

confidence: 83%

Hydro-geochemical conditions under projected climate change scenarios of Marshyangdi River, Nepal

Singh,

Kayastha,

Shrestha

et al. 2024

Theor Appl Climatol

View full text Add to dashboard Cite

Assessment of hydro-geochemical processes in a Himalayan River fed by snow and glaciers in the context of global climate change is crucial to understanding the changes in water quality due to natural and anthropogenic in uences. Thus, the hydro-geochemical status of water quality was analyzed in a snow-fed Himalayan Watershed, Marshyangdi located in western Nepal for current and future scenarios under the medium (RCP 4.5) and pessimistic (RCP 8.5) representative concentration pathways (RCPs) for two seasons (pre-and post-monsoon, 2019) based on multiple regional climate models. Flow at each sampling site of a total of twenty-one sites was estimated from a soil and water assessment tool (SWAT) hydrological model and then the concentration of water quality for the future was determined. A descriptive analysis of water quality was carried and a Piper plot diagram for evaluating the spatiotemporal variation as well as the hydro-geochemical status of water for the current and future scenarios. The results reveal alkaline water in the watershed based on pH values that follow the pattern of average ionic dominance Ca 2+ > Mg 2+ > Na + > K + for cations and HCO 3 − > Cl − > NO 3 − for anions indicating the carbonate-dominated lithology in the Marshyangdi Watershed for the current scenarios.However, for future scenarios dominance of cations is different for the respective seasons Ca 2+ > Na + +K + >Mg 2+ and Na + +K + > Mg 2+ > Ca 2 with similar anion composition with respect to current scenarios under both RCPs.

show abstract

mentioning

confidence: 83%

Hydro-geochemical conditions under projected climate change scenarios of Marshyangdi River, Nepal

Singh,

Kayastha,

Shrestha

et al. 2024

Theor Appl Climatol

View full text Add to dashboard Cite

show abstract

“…2+ ) and magnesium (Mg 2+ ) than silicate under natural conditions. Similarly, based on the ternary plot, Wolff-Boenish et al (2009) also observed the predominance of calcium and magnesium in TSS and GHS-drained watersheds, which was supported byGhezzi et al (2019) on the basis of the dominance of Mg 2+ and Ca 2+ and, to a lesser extent, HCO 3 at super cial water sites of THS and GHS domain except at two sites in THS domain (Mg-Ca-HCO 3 -SO 4 ).…”

mentioning

confidence: 84%

Hydro-Geochemical Conditions under Projected Climate Change Scenarios of Marshyangdi River, Nepal

Singh

Kayastha

Shrestha

et al. 2023

Preprint

View full text Add to dashboard Cite

Assessment of hydro-geochemical processes in a Himalayan River fed by snow and glaciers in the context of global climate change is crucial to understanding the changes in water quality due to natural and anthropogenic influences. Thus, the hydro-geochemical status of water quality was analyzed in a snow-fed Himalayan Watershed, Marshyangdi located in western Nepal for current and future scenarios under the medium (RCP 4.5) and pessimistic (RCP 8.5) representative concentration pathways (RCPs) for two seasons (pre-and post-monsoon, 2019) based on multiple regional climate models. Flow at each sampling site of a total of twenty-one sites was estimated from a soil and water assessment tool (SWAT) hydrological model and then the concentration of water quality for the future was determined. A descriptive analysis of water quality was carried and a Piper plot diagram for evaluating the spatiotemporal variation as well as the hydro-geochemical status of water for the current and future scenarios. The results reveal alkaline water in the watershed based on pH values that follow the pattern of average ionic dominance Ca2+ > Mg2+ > Na+ > K+ for cations and HCO3− > Cl− > NO3− for anions indicating the carbonate-dominated lithology in the Marshyangdi Watershed for the current scenarios. However, for future scenarios dominance of cations is different for the respective seasons Ca2+> Na++K+ >Mg2+ and Na++K+ > Mg2+ > Ca2 with similar anion composition with respect to current scenarios under both RCPs.

show abstract

“…Analysing the hydrochemistry and water quality cannot only identify the mechanisms of interaction between water and the surrounding environmental factors, but also reflect the status of regional water quality, thus, allowing for more rational protection and sustainable utilisation of water resources (Ghezzi et al, 2019;Xiao et al, 2021;Wang and Li, 2022). Under natural conditions, weathering of rocks due to water can lead to the dissolution of various minerals, which results in the gradual accumulation of chemical ions in water (Zhou et al, 2016;Ren et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Hydrochemical evaluation of water quality and its influencing factors in a closed inland lake basin of Northern China

Ren

Kang

et al. 2022

Front. Ecol. Evol.

View full text Add to dashboard Cite

Understanding the water quality and its influencing factors of different water bodies is essential for managing water resources in closed inland lake basins in semi-arid regions. However, generally, groundwater or surface water is assessed separately, and the differences among different water bodies are neglected. This study assessed the water quality and its influencing factors of different water bodies in the Daihai Lake Basin (a closed inland lake basin in a semi-arid region) by analysing the hydrochemical data of groundwater, and spring, river, and lake waters in the dry and wet seasons. The dominant hydrochemical type of groundwater (81.48%), spring water (80%), and river water (83.33%) was HCO3–Ca•Mg, while that of lake water was Cl-Na (100%). Groundwater, spring water, and river water were suitable for drinking and agricultural irrigation; however, the groundwater quality was worse in the wet season than in the dry season. Na+ and Cl– majorly affected the lake water quality. The mean NO3– concentration in groundwater was 28.39 mg/L, and its non-carcinogenic hazard quotient indicated that high risk areas were mainly distributed in Tiancheng and northern Maihutu. The hydrochemical compositions of groundwater, spring water, and river water were mainly influenced by rock (silicate and carbonate) weathering and cation exchange, and agricultural activities were the main sources of groundwater NO3–. Moreover, the lake hydrochemical composition was mainly affected by evaporation and halite dissolution. Thus, groundwater NO3– pollution and lake water salinisation should be prioritised. These findings provide a more thorough understanding of water quality and its influencing factors in the closed inland lake basin in the semi-arid region, and can be used to develop the protection of ecosystems and water resources management strategies in the Daihai Lake Basin.

show abstract

Water quality and solute sources in the Marsyangdi River system of Higher Himalayan range (West-Central Nepal)

Cited by 16 publications

References 55 publications

Hydro-geochemical conditions under projected climate change scenarios of Marshyangdi River, Nepal

Hydro-geochemical conditions under projected climate change scenarios of Marshyangdi River, Nepal

Hydro-Geochemical Conditions under Projected Climate Change Scenarios of Marshyangdi River, Nepal

Hydrochemical evaluation of water quality and its influencing factors in a closed inland lake basin of Northern China

Contact Info

Product

Resources

About