A Preliminary Trend Analysis of DO and BOD Records in Kathmandu, Nepal: Towards Improving Urban Water Environment in Developing Asian Countries

Regmi, Ram K., Mishra, Binaya K., Luo, Pingping, Toyozumi-Kojima, Asako, Fukushi, Kensuke and Takemoto, Kazuhiko, "A Preliminary Trend Analysis of DO and BOD Records in Kathmandu, Nepal: Towards Improving Urban Water Environment in Developing Asian Countries" 11th International Symposium on Southeast Asian Water Environment, Bangkok, 2014/11/26-28.

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  • Sub-type Symposium paper
    Author Regmi, Ram K.
    Mishra, Binaya K.
    Luo, Pingping
    Toyozumi-Kojima, Asako
    Fukushi, Kensuke
    Takemoto, Kazuhiko
    Title A Preliminary Trend Analysis of DO and BOD Records in Kathmandu, Nepal: Towards Improving Urban Water Environment in Developing Asian Countries
    Publication Date 2014
    Place of Publication Tokyo
    Publisher The University of Tokyo
    Pages 371-376
    Title of Event 11th International Symposium on Southeast Asian Water Environment
    Date of Event 2014/11/26-28
    Place of Event Bangkok
    Language eng
    Abstract Deterioration of urban water quality has been recognized as one of the critical environmental issues in rapidly developing Asian cities. Rapid population growth and economic development but in haphazard manner are considered to be main reasons for the critical urban water degradation. United Nations University Institute for the Advanced Study of Sustainability (UNU-IAS) with funding from Ministry of the Environment, Japan has recently launched Water and Urban Initiative (WUI) for enhancing urban water environment in rapidly developing Asian cities. Initially, Hanoi, Jakarta, Kathmandu and Manila have been considered as study areas for this Initiative. Towards this, this study aims to analyse the water quality deterioration trend in the Kathmandu Valley in terms of dissolved oxygen (DO) and biochemical oxygen demand (BOD) to ascertain water quality problems. Water quality data of three stations – Gaurighat, Teku (Kalopul) and Sundarighat – located along the Bagmati River of Kathmandu Valley were used to examine the water quality deterioration trend. The results indicated that the DO is significantly decreasing as the river flows down towards the city core and BOD is increasing as the river flows down towards the city core. The quality of river water is extremely poor and not suitable enough for the purpose of agriculture. To protect the water quality and maintain ecologically and economically healthy land development of the Kathmandu Valley, it is essential to integrate the water quality management with land use planning, industrial and other developments.
    UNBIS Thesaurus WATER QUALITY
    LAND USE
    Keyword Dissolved oxygen
    Biochemical oxygen demand
    Land use planning
    Community awareness
    Copyright Holder Research Center for Water Environment Technology and Department of Urban Engineering, The University of Tokyo
    Copyright Year 2014
    Copyright type All rights reserved
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    Created: Mon, 27 Apr 2015, 12:35:21 JST by Makiko Arima on behalf of UNU IAS