*Water Watch Lists
ISciences staff
ISciences Worldwide Water Watch List June 2025

The forecast through February 2026 expects deficits in Central and Eastern Europe, Central Asia, and the Levant. Surpluses are expected in the western Amazon, the Sahel and southern Africa, and northeastern Australia.

ISciences Worldwide Water Watch List June 2025
Australia & New Zealand
ISciences staff
Australia & New Zealand: Surpluses spread ...

Severe to exceptional surpluses will remain throughout Queensland. Exceptional deficits will occur in portions of Victoria, Western Australia, Tasmania, and New Zealand. 

Australia & New Zealand: Surpluses spread throughout Queensland
East Asia
ISciences staff
East Asia: Deficits continue in NW China, ...

Exceptional deficits will occur in northwestern and southeastern China, widespread throughout the Yangtze River Basin. Isolated pockets of surplus will affect portions of central and northeastern China. 

East Asia: Deficits continue in NW China, Yangtze River Basin
Southeast Asia & Pacific
ISciences staff
Southeast Asia and the Pacific: Deficits ...

Exceptional surpluses throughout Maritime Southeast Asia will mostly diminish, though pockets of severe to exceptional deficits will persist in portions of the Philippines, Indonesia, Papua, West Papua, and New Guinea. 

Southeast Asia and the Pacific: Deficits persist in Maritime SE Asia
South Asia
ISciences staff
South Asia: Deficits remain in Afghanistan, ...

Exceptional surpluses in India will mostly dissipate, transitioning to moderate to severe surpluses. Exceptional deficits will remain in Afghanistan and Pakistan. 

South Asia: Deficits remain in Afghanistan, Pakistan, surpluses persist in India

East Asia: Water surpluses in Shanghai, deficits in Inner Mongolia

East Asia: Water surpluses in Shanghai, deficits in Inner Mongolia

Water conditions observed in the region through November and forecast through April are characterized by exceptional anomalies, both surpluses and deficits, while the forecast for the latter six months of the 12-month forecast (May through October) shows a decrease in the intensity of anomalies. From February through April surpluses are forecast from Shanghai through northern Hunan. Extreme to exceptional deficits are forecast for southern Mongolia, western Inner Mongolia (China), eastern Yunnan, and northern Taiwan. Moderate deficits are expected in Ningxia, southern Shaanxi, Gansu, eastern Sichuan, the Liaodong Peninsula, eastern Guangxi, and Guangdong. Both deficits and surpluses reaching exceptional intensity will continue to emerge in China’s western half.

Central Asia & Russia: Water deficits in Arctic Russia, surpluses in Kyrgyzstan

Central Asia & Russia: Water deficits in Arctic Russia, surpluses in Kyrgyzstan

Drier than normal conditions will persist in many parts of northern Russia from the White Sea through the Central Siberian Plateau. Surpluses will continue to emerge in northwestern Kazakhstan, down the middle of Kazakhstan through Karagandy Region, and in Kyrgyzstan. From May through July deficits will increase southwest of Russia’s Yamal Peninsula, exceptional surpluses will emerge between the Irtysh and Yenisei Rivers, and moderate deficits will emerge in Turkmenistan and Uzbekistan.

South America: Water deficits to persist in central, eastern Brazil & in Chile

South America: Water deficits to persist in central, eastern Brazil & in Chile

Though the extent of water deficits in South America is expected to shrink overall February through April, severe to exceptional deficits are forecast in eastern Brazil as well as pockets in some western states. Deficits in Bolivia are forecast to shrink in extent but large pockets will persist, and the extent of deficits in Chile will shrink slightly. Surpluses will continue to emerge in central and northeastern Argentina; Rio Grande do Sul, Brazil; northern Peru; and eastern Colombia. From May through June deficits will persist in eastern Brazil but much of the Amazon Basin will transition to near-normal. Deficits along Peru’s coast will increase in intensity, becoming exceptional.

Canada: Water deficits persist on QC/ON border; increase nationwide after April

Canada: Water deficits persist on QC/ON border; increase nationwide after April

The water forecast indicates deficits in: central Quebec and its southern border with Ontario; Northumberland County, New Brunswick; southern Newfoundland; northeastern Manitoba along Hudson Bay; northwestern British Columbia and central BC near Prince George; northwestern and central Alberta; northeastern Saskatchewan into northern Manitoba; and northwestern Ontario. Surpluses are forecast around the southern shore of James Bay and west into Ontario; west of Lake Winnipeg in Manitoba; surrounding Lake Churchill Saskatchewan; and scattered throughout southern British Columbia. After April predominantly deficit conditions are forecast.

United States: Exceptional water deficits in AR, surpluses in ID, NV

United States: Exceptional water deficits in AR, surpluses in ID, NV

The extent of exceptional water deficits from the Ohio River Valley to the Gulf is expected to recede but exceptional deficits will persist in eastern Oklahoma, northern Arkansas, Missouri, and west-central Illinois. Widespread surpluses will continue to emerge in the West with particular intensity in Idaho and northern Nevada. Moderate surpluses are forecast for much of California, particularly Central California.

Many analyses reported in ISciences-authored blog posts are based on data generated by the ISciences Water Security Indicator Model (WSIM). Other sources, if used, are referenced in footnotes accompanying individual posts. WSIM is a validated capability that produces monthly reports on current and forecast global freshwater surpluses and deficits with lead times of 1-9 months at 0.25°x0.25° resolution. This capability has been in continuous operation since April 2011 and has proven to provide reliable forecasts of emerging water security concerns in that time-frame. WSIM has the ability to assess the impacts of water anomalies on people, agriculture, and electricity generation. Detailed data, customized visualizations, and reports are available for purchase.

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