*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

ISciences Worldwide Water Watch List December 2015

Regions likely to encounter significant water deficits in the coming months include: the Mississippi Valley, US; southern Mexico; northern Brazil; North Africa, coastal West Africa, southern Africa; Mediterranean Europe; the Arabian Peninsula; and Southeast Asia. Significant water surpluses are forecast for: the Southern Plains and Florida, US; central Argentina; Tanzania and Kenya; southeast India; and southeast China. This watch list is based on ISciences' Water Security Indicator Model (WSIM) Global Water Monitor and Forecast issued 8 December 2015.

 

Global Precipitation & Temperature Outlook for December 2015

Continuing a pattern established in previous months, warm temperature anomalies are forecast for December in many parts of the world, particularly Ontario, Quebec, the Great Lakes, Central America, Caribbean, Brazil's Amazon, India, Southeast Asia, and Indonesia. Dry anomalies are expected in northern Brazil. Exceptionally wet anomalies are expected in South Sudan and surrounding regions.

Australia: Water deficits to persist in Melbourne, Tasmania, Perth; North may transition to surplus

The forecast through July 2016 indicates a predominance of water surpluses in the north and along central rivers. However, exceptional drought may persist in southern Victoria, southern South Australia, Tasmania, and from Perth southward. Moderate drought may persist in North Island, New Zealand.

China, Mongolia, & the Korean Peninsula: Water surpluses in Southeast China, deficits in Northern China

Widespread water deficits may persist in North China including the North China Plain and Mongolia, with some areas experiencing both deficits and surpluses. Widespread surpluses are forecast for Southeast China, which may be of exceptional severity in Fujian, along the Pearl River (Zhujiang), and at the conjoined borders of Guizhou, Hunan, and Guangxi. Surpluses may also persist in North Korea.

Southeast Asia & the Pacific: Water deficits to persist in Southeast Asia, Borneo, New Guinea

Many parts of Southeast Asia and the Pacific may continue to experience moderate to exceptional water deficits in the coming months. Deficits may be most persistent and severe in Southeast Asia, eastern Borneo, the Philippines, and the island of New Guinea.

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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