Hydrochemistry of Kupinde Lake at the Lesser Himalaya in Karnali Province, Nepal

• DOI: 10.3126/jist.v28i1.49052
• Publication Date: 2023-08-03T09:02:47Z
• Authors: Chandra Bahadur S...; Laxman Khanal; Ramesh Raj Pant; Bina Thapa; Bijay Chand
• Keywords: Lithology; Total dissolved solids; Dissolved silica; Alkalinity

Hydrochemical assessment of the freshwater lakes provides important insights into sources dissolved ions, geochemical processes, and anthropogenic activities taking place in environment. This study focuses on hydrochemistry water quality Kupinde Lake, Karnali Province, Nepal. Surface samples were collected from 24 different locations lake October 2021 analyzed for 18 physico-chemical parameters. The pH, temperature, electrical conductivity total solids measured on-site, concentration major ions (Ca2+, Mg2+, Na+, K+, NH4+, HCO3-, Cl-, SO42-, PO43-, NO3-), including hardness free CO2 laboratory. results revealed that was alkaline with abundance following order: Ca2+ > Mg2+ Na+> K+ NH4+ HCO3- Cl- SO42- PO43- NO3- cations anions, respectively. dominated by Ca-HCO3, indicating calcium carbonate lithology area. Gibb’s plot Piper diagram illustrated rock weathering as most dominant process controlling basin. suitability drinking irrigation determined using indices WHO standards. indicated Lake could be used purposes terms hydrochemical variables.