*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

South America

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Central America and Northern South America: Exceptional Water Deficits July 2015 through January 2016

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Exceptional water deficits are forecast for Central America starting in July and continuing through January 2016. Exceptional deficits are also forecast to hit Colombia, Ecuador, and Northern Peru in late summer. The area of extreme to exceptional deficits in Venezuela expands into Guyana, Suriname, and French Guiana beginning in June, with the area of greatest deficits moving southward beginning in October. A sizable portion of Northern Brazil is forecast to experience exceptional deficits beginning in December 2015. 

Venezuela: Exceptional Water Deficits to Expand, Continuing through January 2016

The region of exceptional deficits is forecast to expand northward, including most of the country by August 2015, and continuing in most of the country through January 2016. On an annual basis, nearly the entire country will experience exceptional deficits by the end of 2015 and into 2016.

Current Water Anomalies: Brazil

It is widely known that Brazil is in the midst of a crippling drought.  The map is based on 3 months of observed data (Dec14-Feb15) and nine months of forecast data (Mar15-Nov15).  It shows that the drought is likely to continue through November.  This will severely stress the ability of Sao Paulo to provide water to its citizens where water is already rationed, and continue to restrict the ability of Brazil to produce hydropower requiring significant expenditures for backup generation from natural gas and oil.

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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