*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

Canada: Widespread water deficits to persist in the East

Canada: Widespread water deficits to persist in the East

The forecast through December indicates many areas of intense water deficit in the Maritimes, Newfoundland, Quebec, and Ontario. Widespread surpluses are expected in northern Manitoba and Saskatchewan. Surpluses in British Columbia will be intense near Kelowna.

Mexico, Central America, & the Caribbean: Water deficits in many regions of Mexico

Mexico, Central America, & the Caribbean: Water deficits in many regions of Mexico

The forecast through December indicates water deficits in much of Mexico outside of the Yucatán. Anomalies will be intense in southern Baja, Chihuahua, Coahuila, and eastern states. Surpluses are forecast in pockets of Central America and the Caribbean.

Australia & New Zealand: Water deficits to persist in Tasmania

Australia & New Zealand: Water deficits to persist in Tasmania

The forecast through December indicates near normal conditions as exceptional deficits retreat. Deficits will persist in Australia’s southwestern tip and Tasmania. Areas of surplus include the central Murray-Darling Basin and the Avon River region in Western Australia.

East Asia: Water surplus to persist in Yellow, Yangtze, & NE China

East Asia: Water surplus to persist in Yellow, Yangtze, & NE China

The forecast through December indicates that water surpluses in China will remain widespread in the Yellow and Yangtze River Watersheds and in Northeast China, with exceptional anomalies shrinking in the river basins but increasing in the Northeast. Deficits are forecast in Japan.

South America: Intense water deficits to persist in French Guiana

South America: Intense water deficits to persist in French Guiana

The forecast through December indicates that water deficits will shrink considerably, but intense deficits are forecast in Venezuela, French Guiana, far eastern Brazil, and Chile. Severe deficits are forecast in Brazil from Mato Grosso do Sul through São Paulo State.

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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