*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

Europe: Water surplus to diminish overall, increase in France & the UK

Europe: Water surplus to diminish overall, increase in France & the UK

In the near-term through May, water surplus in Central and Eastern Europe and European Russia is expected to shrink and downgrade, though remain widespread. In France and the UK, however, surpluses will increase in extent. Exceptional deficits will continue to emerge in Finland, Estonia, Latvia, and a pocket in central Sweden. A band of deficit conditions will persist across southern Italy, but deficits on the Iberian Peninsula will shrink and downgrade – with some surplus conditions emerging. After May, the forecast indicates a transition away from surplus to mild deficit in many areas.

Canada: Water surplus continues in southern BC, deficit on ON/QC border

Canada: Water surplus continues in southern BC, deficit on ON/QC border

Widespread, intense water surpluses will emerge in southern British Columbia. Northern Quebec is expected to transition from surplus to normal conditions and moderate deficit. Nearly normal conditions will return to Northern Ontario’s Albany River region. Significant deficits are forecast along the Ontario/Quebec border corridor, surrounding Lake Mistassini QC, the Upper Athabasca Watershed of central Alberta, and surrounding Prince George, BC.

South America: Water surplus forecast for Paraguay; deficit Venezuela

South America: Water surplus forecast for Paraguay; deficit Venezuela

Water deficits will diminish, returning many regions of Brazil to near-normal conditions. However, pockets of intense deficit are forecast for northern Amapá, Acre, Amazonas, Minas Gerais, Mato Grosso do Sul, São Paolo, and Rio Grande do Sul, as well as southern Venezuela, eastern Suriname, French Guiana, and the Gulf of Corcovado in Chile. Severe deficits are forecast for Uruguay and a large block in eastern Argentina. Areas of surplus include much of Paraguay, where conditions may be exceptional in the northwest, and pockets in Venezuela. 

United States: Water surplus to persist in Ohio River Valley, emerge on Missouri River

United States: Water surplus to persist in Ohio River Valley, emerge on Missouri River

Water surpluses will continue to emerge in southern Michigan and the Ohio River Valley. Exceptional surplus is expected on the Missouri River, western Montana, Idaho, and Washington. Intense deficits will continue in the West and Southwest. Moderate deficits are forecast for Oregon, Kansas, western Oklahoma, and most of Texas west of the Brazos River, with severe conditions in the Panhandle. Missouri, Arkansas, Louisiana, and Mississippi will transition out of deficit, with moderate surplus emerging in Arkansas into surrounding states. Deficits in the Mid-Atlantic States will shrink.

Australia & New Zealand: Water deficits persist in Tasmania

Australia & New Zealand: Water deficits persist in Tasmania

Mainland Australia is forecast to transition from widespread exceptional water deficit to mild conditions, with more intense deficits in Tasmania. Areas of moderate deficit include eastern South Australia, Victoria, the Murray-Darling Basin, and the east coast to Brisbane. Surpluses will persist in the Kimberley region, WA; shrink along the Victoria River and emerge in Arnhem Land, NT; re-emerge in northern Cape York Peninsula, QLD; and continue to emerge in the Mackenzie River area west of Rockhampton, QLD. Deficits in New Caledonia and New Zealand will moderate.

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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