The forecast through June indicates that water surplus will shrink in European Russia, persist in the Tom River watershed, and transition to deficit in the Ob River watershed. Deficits will emerge surrounding Orenburg on the Ural River, and between the Lower Tunguska and the Angara Rivers in the Yenisei watershed. In Kazakhstan, surpluses will emerge and persist in the north, but diminish elsewhere; deficits will emerge in the west, which will be extreme on the Ural River. Intense deficits are forecast for Turkmenistan, eastern Uzbekistan, western Kyrgyzstan, and Tajikistan.
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Exceptional water surpluses in European Russia will shrink and downgrade. The Ob River Basin will transition from surplus to deficit, with a block of exceptional deficit in the Tobol River watershed south of the city of Tyumen. Intense surpluses are expected to persist around the city of Krasnoyarsk on the Yenisei River. Deficits will emerge in Turkmenistan and Uzbekistan, and exceptional deficits in the Fergana Valley, western Kyrgyzstan, and southern Tajikistan. Severe deficits are forecast Kazakhstan along the Ural River in the west leading into Orenburg, Russia.
Regions forecast to have significant water deficits for the 12-month period from December 2017 through November 2018 include: the US West, Southwest, and South Atlantic States; southern Venezuela; Uruguay; northeastern Argentina; Finland; northern Africa and Gabon; and southern Iraq. Areas with a forecast of significant water surplus include: the Ohio River Valley and western Montana (US); Paraguay; Tanzania and Ethiopia; Ireland; Central and Eastern Europe; and European Russia. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 7 March 2018.
The forecast through March indicates exceptional surpluses in European Russia, along the Middle Ob River, the Tom River Basin, and Aktobe Region, Kazakhstan. Surpluses are also forecast for much of the Yenisei River. Exceptional deficits are expected in the Yamal Peninsula. Intense deficits are forecast for Turkmenistan and Uzbekistan. After March, surpluses in Russia are forecast to diminish. Deficits will downgrade in Yamal, persist in Turkmenistan, and spread in Uzbekistan and Kazakhstan. Moderate deficits will emerge in the Caucasus, western Kyrgyzstan and western Tajikistan.
Widespread pockets of exceptional water surplus conditions will continue across central Russia and northern and southern Kazakhstan for much of the forecast period, moderating towards early 2018. Increased flows are expected in the Ob and Volga River basins. Recent exceptional deficits across northern Russia may retreat somewhat to the northern regions of Krasnoyarsk Krai. Moderate deficits are forecast to develop over much of Turkmenistan and Uzbekistan from June through November before moderating in early 2018.