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Water 2018, 10(2), 220; doi:10.3390/w10020220

Impact of Climate Change on Water Resources of the Bheri River Basin, Nepal

School of Engineering and Technology, Asian Institute of Technology, PO Box 4, Klong Luang, 12120 Pathumathani, Thailand
Geoinformatics Center, Asian Institute of Technology, PO Box 4, Klong Luang, 12120 Pathumathani, Thailand
Author to whom correspondence should be addressed.
Received: 19 November 2017 / Revised: 31 January 2018 / Accepted: 7 February 2018 / Published: 18 February 2018
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Streamflow alteration is one of the most noticeable effects of climate change. This study explored the effects of climate change on streamflow in the Bheri River using the Soil and Water Assessment Tool (SWAT) model. Three General Circulation Models (GCMs) under two Representative Concentration Pathways (RCPs; 4.5 and 8.5) for the periods of 2020–2044, 2045–2069, and 2070–2099 were used to investigate the impact of climate change. Based on the ensemble of the three models, we observed an increasing trend in maximum and minimum temperatures at the rate of 0.025 °C/year and 0.033 °C/year, respectively, under RCP 4.5, and 0.065 °C/year and 0.071 °C/year under RCP 8.5 in the future. Similarly, annual rainfall will increase by 6.8–15.2% in the three future periods. The consequences of the increment in rainfall and temperature are reflected in the annual streamflow that is projected to increase by 6–12.5% when compared to the historical data of 1975–2005. However, on a monthly scale, runoff will decrease in July and August by up to 20% and increase in the dry period by up to 70%, which is favorable for water users. View Full-Text
Keywords: climate change; GCM; SWAT; Bheri River Basin climate change; GCM; SWAT; Bheri River Basin

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mishra, Y.; Nakamura, T.; Babel, M.S.; Ninsawat, S.; Ochi, S. Impact of Climate Change on Water Resources of the Bheri River Basin, Nepal. Water 2018, 10, 220.

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