Exceptional deficits throughout Africa will persist in northwestern, northern, and central countries. Surpluses will remain along the Sahel.
Exceptional deficits will remain throughout the Amazon and the Boliviarian Nations. Similar deficits will occur in northeastern coastal regions of Brazil, in Argentina, and in Chile.
The forecast for November 2024 expects significant water deficits for the 12-month period of August 2024 through July 2025 in northern South America, Canada, northwestern and eastern China, and northern to central Africa. Areas expected to experience surplus include central Africa, South Asia, and Central America.
With the release of WSIM v3 and 8 years of additional data, we reevaluate drought risk in the Amazon and the historic drought that continue to affect the region.
The forecast indicates that extreme to exceptional surpluses in northern Australia will diminish, though will still remain present in some regions of Northern Territory. Exceptional deficits across the continent will similarly dissipate, though severe deficits are expected along the southern coast of Victoria.
The forecast through September indicates that surpluses will shrink in Russia’s Northern European Plain and persist in the Ob River Basin. Intense deficits are forecast for much of the Yenisei River Basin. Intense surpluses in southern Turkmenistan will begin to transition, with conditions of both surplus and deficit as deficits emerge. Deficits will also emerge in northeastern Uzbekistan.
The forecast through August 2019 indicates widespread surpluses in the Ob River Basin, deficits in much of the Yenisei River Basin, surpluses in the Lower Volga, and deficits in the Middle and Upper Volga regions. Intense surpluses will persist in southern Turkmenistan but both deficits and surpluses are also forecast as transitions occur. Surpluses are also forecast for eastern Uzbekistan, western Tajikistan, Kyrgyzstan, and northern Kazakhstan.
The forecast through March indicates intense water surpluses in the Ob and Yenisei River Basins in Russia. Moderate to severe deficits are forecast for the Ural River Watershed in northwestern Kazakhstan and across the border into Russia, and in the Upper Volga River Basin and parts of Trans Volga. Primarily moderate surpluses are expected along the Ertis (Irtysh), Esil, and Ile Rivers in Kazakhstan, and the Zarafshon River in eastern Uzbekistan. Severe deficits are forecast for eastern Tajikistan and surpluses in the west.
The forecast through February indicates intense water surpluses on the Ob, Vakh, Pur, and Taz Rivers in Russia. Surpluses will be widespread in the Middle Ob region and the Yenisei River watershed. Severe to extreme deficits are forecast for western Kazakhstan, reaching across the northern border into the Ural River watershed in Russia. Surpluses are expected in northern Kazakhstan, eastern Kyrgyzstan, western Tajikistan, and along the Zerafshon River in Ubekistan. Deficits are forecast for eastern Tajikistan and central Kyrgyzstan.
Regions forecast to have significant water deficits for the 12-month period from September 2018 through August 2019 include: Quebec (Canada), Chile, Finland, Albania, northern Africa, India, western Cambodia, and southeastern Australia. Areas with a forecast of significant water surplus include: Texas and Pennsylvania (US), Paraguay, western Tanzania, Tomsk and Kemerovo (Russia), and Heilongjiang (China). This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 7 December 2018.
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