*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 March 2018

ISciences Worldwide Water Watch List March 2018

Regions forecast to have significant water deficits for the 12-month period from December 2017 through November 2018 include: the US West, Southwest, and South Atlantic States; southern Venezuela; Uruguay; northeastern Argentina; Finland; northern Africa and Gabon; and southern Iraq. Areas with a forecast of significant water surplus include: the Ohio River Valley and western Montana (US); Paraguay; Tanzania and Ethiopia; Ireland; Central and Eastern Europe; and European Russia. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 7 March 2018.

Global Precipitation & Temperature Outlook March 2018

Global Precipitation & Temperature Outlook March 2018

The March Outlook indicates that East Africa, Southeast Asia, and Paraguay will be significantly wetter than normal. A vast stretch of much warmer than normal conditions is forecast from West Africa leading across Mediterranean Africa, through the Levant, and from northern Iran through Central Asia across much of northern China into Mongolia.

United States: Water deficits from CA to the Mississippi, & Eastern Seaboard

United States: Water deficits from CA to the Mississippi, & Eastern Seaboard

The forecast for the next few months indicates relief from exceptional water deficits observed during the prior three months in the West and the Lower Mississippi states. However, widespread deficits remain in the forecast from California to the Mississippi, and from the Gulf of Mexico northward along the Eastern Seaboard through Massachusetts. Deficits will be especially intense in New Mexico, Missouri, and Virginia. Surpluses are forecast for Washington, Idaho, western Montana, and along the Missouri and Yellowstone Rivers. The widespread distribution of deficits is expected to persist through July or longer.

Australia & New Zealand: Intense water deficits persist in Tasmania & New Caledonia

Australia & New Zealand: Intense water deficits persist in Tasmania & New Caledonia

Widespread, exceptional water deficits observed in recent months in Australia are forecast to nearly disappear, though intense deficits will persist in Tasmania and near Busselton, WA. Through April, primarily moderate deficits are forecast from the Eyre Peninsula in South Australia through much of Victoria and into New South Wales; for central Queensland to the Gulf of Carpentaria; and, northwest to Darwin, where deficits may be more severe. Deficits are expected to retreat significantly in New Zealand, but will continue to emerge in New Caledonia.

Canada: Water surpluses continue to emerge in southern British Columbia

Canada: Water surpluses continue to emerge in southern British Columbia

The forecast through April indicates water conditions much the same as in the prior three months, with some overall shrinkage of anomalies in the eastern half of the country. One notable difference is the emergence of widespread intense surplus conditions in southern British Columbia. After April, much of the eastern half of the country will transition to deficit, retaining exceptional deficits in eastern Quebec, central Quebec, and the central Quebec/Ontario border. Deficits in the western provinces will diminish slightly, and intense surpluses will persist in parts of southern BC.

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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