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Regions forecast to have significant water deficits for the 12-month period from July 2017 through June 2018 include: Amapá (Brazil), Estonia, Ukraine, Turkey, Syria, Jordan, Madhya Pradesh (India), western Cambodia, and Tasmania (Australia). Water surpluses are forecast for: Tripura, Mizoram, and Manipur (India), western Myanmar, the Upper and Middle Yangtze River (China), and the Upper Ob River and Tom River Basins and the Transvolga Region (Russia). This Watch List is based on ISciences Water Security Indicator Model (WSIM) Global Water Monitor and Forecast issued 9 October 2017.
The October 2017 Outlook indicates a forecast of much warmer than normal temperatures in Yemen, Southeast Asia, western Africa, and La Paz, Bolivia. Eastern South Sudan is expected to be much cooler than normal. Intense wet anomalies are forecast for southern Henan and Shaanxi, China.
The near-term forecast through November indicates a significant retreat of exceptional deficits on the Arabian Peninsula though deficits will continue to emerge, reaching south into much of Yemen and southern Oman. Deficits in the Levant will downgrade to moderate. Exceptional deficits in Iraq west of the Euphrates are expected to become slightly less intense except in the south. Deficits will emerge throughout much of the eastern two-thirds of Iran. After November exceptional deficits are forecast to nearly disappear though widespread deficits of lesser intensity will continue to emerge.
Water surpluses of varying intensity are forecast in Russia from western European Russia through the Western Siberian Plain through February 2018 or longer, and are expected to be exceptional in the TransVolga region and in the Upper Ob River Basin surrounding Novosibirsk. Exceptional surpluses in Kazakhstan will transition to conditions of both deficit and surplus through February. Surpluses are forecast for Kyrgyzstan, especially Bishkek. Deficits in Turkmenistan and Uzbekistan are forecast to moderate somewhat in the near-term but persist, diminishing after November.
A relatively consistent pattern of water anomalies is forecast from September through May characterized by exceptional deficits in central India and surpluses in Bangladesh, Nepal, and far eastern India. In the near-term, intense deficits are forecast in Madhya Pradesh and Chhattisgarh trailing west, east, and south. Deficits are also forecast in Karnataka, Goa, coastal Maharashtra, and southwestern Afghanistan and Pakistan. Exceptional surpluses will continue to emerge in Bangladesh, Tripura, and Mizoram. Some severe surpluses are forecast to emerge near Bengaluru, Karnataka. After November, severe to extreme deficits are forecast to emerge in Arunachal Pradesh.
The forecast indicates a transition away from widespread water surpluses and towards the gradual emergence of deficits. Exceptional deficits in western Cambodia are expected to persist through February or longer, but should diminish in extent after November. From September through November moderate deficits will begin to emerge in Thailand, the Malay Peninsula, southern Sumatra, and Java, and thereafter in Borneo and Sulawesi.
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.
Exceptional water deficits observed in recent months over much of Australia are forecast to diminish considerably in the near-term and through May 2018. However, severe to exceptional deficits are forecast to persist through February in Tasmania and the southernmost tip of Western Australia. From September through November moderate to severe deficits are forecast in the southeast, exceptional deficits will persist in Northern Territory’s Top End, and surpluses will continue to emerge along Queensland’s northeast coast.
The near-term forecast through November indicates a significant retreat of exceptional water deficits in the Prairie Provinces. Deficits will persist in northeastern Manitoba and are forecast for much of Alberta, where they may be more intense north of Banff National Park in the southwest and may persist through February 2018 or longer. Surpluses in Southern Ontario north of Kitchener and in Ottawa are expected to diminish, and deficits are forecast for much of Northern Ontario. Deficits will persist in New Brunswick, and emerge in Quebec east of the St. Lawrence River.