The forecast through May indicates the emergence of a vast stretch of extreme to exceptional water deficits in southern and eastern Mongolia and Inner Mongolia, China. Widespread surpluses will downgrade but persist in the Yangtze Basin’s Lower Reaches and in the southern portion of the Middle Reaches. Moderate deficits will emerge in Hainan and conditions in Taiwan will transition to near-normal. Intense deficits will emerge on the Korean Peninsula and will increase in much of Japan.
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The forecast through April indicates a vast stretch of intense water deficits in southern and eastern Mongolia and into Inner Mongolia, China. Moderate surpluses will emerge on the Lower Reaches of the Yellow River. Widespread surpluses will persist in the Yangtze Basin’s Lower Reaches and in the southern portion of the Middle Reaches, reaching into Guangxi. Surpluses will be exceptional in Shanghai and Jiangsu. Deficits are forecast for North Korea and northern Honshu, Japan. Some surpluses are forecast for South Korea and Kyushu, Japan.
The forecast through January indicates widespread surpluses south of the Yangtze River and in the Pearl River watershed. Intense surpluses will persist in Northeast China and western Sichuan, Qinghai, and Tibet. Deficits are forecast for Hubei, eastern Sichuan, Shaanxi, Henan, Shanxi, and Hebei. Deficits are expected to increase and intensify across southern Mongolia and from western Inner Mongolia, China through Xinjiang with conditions of both deficit and surplus in areas of transition. On the Korean Peninsula, moderate surpluses are forecast in the south and moderate deficits in the north.
Widespread water surpluses will emerge south of the Yangtze River and in the Pearl River watershed over the next few months and may persist through March. Surpluses are also forecast for Sichuan, Qinghai, and Tibet and may persist even longer. Deficits will increase and intensify from western Inner Mongolia through Xinjiang, and moderate to severe deficits will emerge from the North China Plain to the Yangtze River. Extreme surpluses are forecast for southern Japan, and deficits for southern North Korea.
The near-term forecast through November indicates intense surpluses in China’s Jilin and Heilongjiang Provinces; along the Yellow River; in Shaanxi, southern Gansu, and Qinghai; and in Tibet. Surpluses are also forecast for southern China and Hokkaido, Japan. Deficits reaching exceptional intensity are forecast from western Inner Mongolia across much of Xinjiang. Deficits are also expected in the Lower and Middle Yangtze River Basin, South Korea, and southwestern Japan.
Regions forecast to have significant water deficits for the 12-month period from June 2018 through May 2019 include: the US Pacific Northwest, southern Mexico, Brazil, Chile, Central and Northern Europe, northern Africa, the Middle East, Afghanistan, and southern India. Areas with a forecast of significant water surplus include: Tanzania, Kenya, Bangladesh, Myanmar, Laos, and Heilongjiang, China. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 10 September 2018.
Through the next several months, widespread water surpluses in the center of China will shrink and downgrade, and surpluses further east in Hubei, Henan, and Anhui will transition to mild deficit. In the south, moderate to severe surpluses will increase in Yunnan and western Guangxi. Deficits will shrink in Mongolia, Inner Mongolia, and Southeast China. Moderate to extreme deficits will persist in Liaoning and Jilin in the northeast, and will emerge on the Korean Peninsula and Honshu, Japan.
Exceptional water deficits in Mongolia and Inner Mongolia through southern Xinjiang will diminish considerably, though widespread deficits of varying severity are expected. Deficits will increase in Northeast China and are expected to be intense in Liaoning, Jilin, and Heilongjiang. In Southeast China, moderate to exceptional deficits are forecast for Fujian, Guangdong, Jiangxi, Hunan, Guangxi, Hong Kong, and Taiwan. Surpluses are forecast for the Huai River Basin. Moderate deficits are forecast for much of North Korea but deficits may be severe north of Pyongyang.
Widespread intense deficits will emerge in Zhejiang, Fujian, Guangdong, and Taiwan. Widespread intense surpluses are forecast for a vast stretch of the Upper and Middle Yangtze River, with exceptional surpluses in the Han River watershed. Aforementioned deficits may persist through March and surpluses may persist longer. Severe surpluses will continue to emerge along the Middle and Lower Yellow River through December. Surpluses in the western Pearl River watershed and around the Gulf of Tonkin are forecast to diminish slowly through March. Intense surpluses will continue to emerge in eastern Qinghai while intense deficits are forecast in the west.
Recent exceptional deficits in Mongolia, the Korean Peninsula, and Liaoning are expected to moderate in the near term – September through November. Widespread surpluses are expected to persist in southern China from Poyang Lake in Jiangxi southwest through Hunan into Guangxi and Yunnan, and the western Pearl River Delta, though the extent of exceptional surpluses will diminish considerably. The coastal southeast will transition from surplus to moderate deficit, a trend which is forecast to continue through May. After November, surpluses in Jiangxi through Yunnan will continue to diminish.