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Sci Rep. 2018 Feb 1;8(1):2144. doi: 10.1038/s41598-018-20032-w.

Mapping Monthly Water Scarcity in Global Transboundary Basins at Country-Basin Mesh Based Spatial Resolution.

Author information

1
College of Hydraulic and Environmental Engineering, China Three Gorges University, P.O. Box 443002, Yichang, China. dagmawi.degefu@ryerson.ca.
2
Faculty of Engineering and Architectural Science, Ryerson University, P.O. Box M5B 2K3, Toronto, Canada. dagmawi.degefu@ryerson.ca.
3
College of Hydraulic and Environmental Engineering, China Three Gorges University, P.O. Box 443002, Yichang, China. weijunhe@ctgu.edu.cn.
4
College of Economics and Management, China Three Gorges University, P.O. Box 443002, Yichang, China. weijunhe@ctgu.edu.cn.
5
Faculty of Engineering and Architectural Science, Ryerson University, P.O. Box M5B 2K3, Toronto, Canada.
6
College of Economics and Management, China Three Gorges University, P.O. Box 443002, Yichang, China. liangyuan@hhu.edu.cn.
7
School of Business, Hohai University, P.O. Box 211000, Nanjing, China. liangyuan@hhu.edu.cn.
8
College of Economics and Management, China Three Gorges University, P.O. Box 443002, Yichang, China.
9
School of Business, Hohai University, P.O. Box 211000, Nanjing, China.

Abstract

Currently fresh water scarcity is an issue with huge socio-economic and environmental impacts. Transboundary river and lake basins are among the sources of fresh water facing this challenge. Previous studies measured blue water scarcity at different spatial and temporal resolutions. But there is no global water availability and footprint assessment done at country-basin mesh based spatial and monthly temporal resolutions. In this study we assessed water scarcity at these spatial and temporal resolutions. Our results showed that around 1.6 billion people living within the 328 country-basin units out of the 560 we assessed in this study endures severe water scarcity at least for a month within the year. In addition, 175 country-basin units goes through severe water scarcity for 3-12 months in the year. These sub-basins include nearly a billion people. Generally, the results of this study provide insights regarding the number of people and country-basin units experiencing low, moderate, significant and severe water scarcity at a monthly temporal resolution. These insights might help these basins' sharing countries to design and implement sustainable water management and sharing schemes.

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