Water Quality of Melamchi River of Sindhupalchok District, Central Nepal

Journal of natural history museum Pub Date : 2018-01-19 DOI:10.3126/JNHM.V29I0.19034

Abhr R Mishra, Ranjana Gupta

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Abstract

The present study was carried out to estimate the physico-chemical characteristic of Melamchi River from January 2011 to December 2013 with a view to assess the nature and degree of pollution. Melamchi River is a snowmelt and rain fed river. River water is mainly used for drinking and irrigation. Water samples were collected on monthly basis from five sites of river. Parameters analyzed include temperature, electrical conductivity, turbidity, pH, hardness, alkalinity, dissolved oxygen, calcium, magnesium, chloride, phosphate, and nitrate. The study revealed seasonal fluctuations of the factors. River water was well oxygenated and alkaline in nature. High level for turbidity (43.25/ NTU) was observed during monsoon, which exceeded compliance levels of WHO (2011) tolerance limits (5/ NTU) for domestic use. Water contained more TDS and EC indicating the impact of agriculture and deforestation near the river area. The analyzed physico-chemical parameters were found within the permissible limit of WHO, except turbidity. Measures should be taken to regulate agricultural and deforestation activities upriver to avoid advert conditions.J. Nat. Hist. Mus. Vol. 29, 2015,, Page: 9-18

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尼泊尔中部Sindhupalchok地区Melamchi河的水质

本研究对2011年1月至2013年12月梅兰姆齐河的理化特征进行了估算，以评价其污染的性质和程度。梅兰奇河是一条融雪和雨水形成的河流。河水主要用于饮用和灌溉。每月在五个河流地点采集水样。分析的参数包括温度、电导率、浊度、pH值、硬度、碱度、溶解氧、钙、镁、氯化物、磷酸盐和硝酸盐。这项研究揭示了这些因素的季节性波动。河水含氧良好，呈碱性。季风期间观察到高浊度水平(43.25/ NTU)，超过了符合世卫组织(2011年)的家庭使用容忍限值(5/ NTU)。水中含有更多的TDS和EC，表明河流附近地区的农业和森林砍伐的影响。分析的理化参数除浊度外均在WHO允许范围内。应采取措施规范上游的农业和森林砍伐活动，以避免不利的条件。Nat。嘘。亩。Vol. 29, 2015，， Page: 9-18

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Journal of natural history museum

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