*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

Southeast Asia & the Pacific: Water deficits to shrink in Thailand

Southeast Asia & the Pacific: Water deficits to shrink in Thailand

The forecast through August indicates that water deficits will shrink and downgrade leaving surpluses as the predominant anomaly, particularly in Indonesia. Surpluses will be intense in Aceh Province, Sumatra. Deficits in Thailand and Cambodia will nearly disappear.

East Asia: Water surpluses in S China will retreat

East Asia: Water surpluses in S China will retreat

The forecast through August indicates that water surpluses will persist in the Yellow River Basin, downgrade in the Yangtze, and retreat from the Pearl. Deficits will moderate in Yunnan and emerge in Hainan. Near-normal conditions are forecast for Taiwan, the Korean Peninsula, and Japan.

South America: Intense water deficits on the Paraguay River

South America: Intense water deficits on the Paraguay River

The forecast through August indicates that water deficits will shrink and downgrade overall but widespread deficits are forecast from western Amazonas, Brazil through São Paulo State and in much of Peru. Surpluses are forecast for eastern Brazil.

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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