*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: Intense water deficits to persist in Amapá & Roraima

South America: Intense water deficits to persist in Amapá & Roraima

A significant retreat of water deficits is forecast October through June, but through December exceptional deficits are expected in northernmost Brazil and into neighboring countries. Deficits are also forecast north of Lake Titicaca in Peru through La Paz and Cochabamba, Bolivia and into Argentina. Widespread, primarily moderate deficits are predicted in much of eastern Brazil, which may be more severe along the coast of the State of São Paulo. Surpluses are forecast in central Colombia, northern Peru, northern Bolivia, eastern Argentina, Uruguay, and O’Higgins Lake in Patagonia. After December widespread moderate surpluses are forecast in the northern Amazon Basin

Australia & New Zealand: Intense water deficits persist in Tasmania

Australia & New Zealand: Intense water deficits persist in Tasmania

Exceptional deficits observed in recent months over much of Australia are forecast to diminish considerably in the near-term and through June 2018. Through December, however, exceptional deficits are forecast for Tasmania and the southwest tip of Western Australia. Moderate to extreme deficits are forecast from Adelaide through Victoria and into the eastern Murray-Darling Basin in New South Wales. Moderate deficits are expected in New Caledonia and South Island, New Zealand. Surpluses are forecast for the Ord River Basin, northeastern Queensland, and Christchurch, New Zealand. 

Mexico, Central America & the Caribbean: Water surplus to persist in Honduras & El Salvador

Mexico, Central America & the Caribbean: Water surplus to persist in Honduras & El Salvador

Exceptional water deficits in Cuba are forecast to retreat through December, and moderate to severe deficits are forecast for Tamaulipas, Mexico, and other pockets across the north. The extent of exceptional surpluses in Central America is expected to shrink, but surpluses remain in the forecast and may be especially intense in Honduras. After December moderate deficits will continue to emerge in northern Mexico with more severe deficits in Tamaulipas. Surpluses will persist in Central America but will begin to transition to deficits in El Salvador.

Canada: Intense water deficits forecast Sherbrooke QC, deficits Kelowna BC

Canada: Intense water deficits forecast Sherbrooke QC, deficits Kelowna BC

The near-term forecast through December indicates intense water deficits along the northern Ontario-Quebec border into southern Nord-du-Québec, and in Sherbrooke (Quebec), New Brunswick, southern Nova Scotia, southeastern Newfoundland, northeastern Manitoba into Quebec, and from Glacier National Park in British Columbia into Alberta. Deficits will retreat in the Prairie Provinces. Exceptional surpluses are forecast west of Lake Winnipeg in Manitoba into Saskatchewan; from Churchill Lake in SK past Ft. McMurray, Alberta; and, near Kelowna, BC.

Africa: Water deficits forecast for Mauritania, Guinea-Bissau, Mali, Burkina Faso

Africa: Water deficits forecast for Mauritania, Guinea-Bissau, Mali, Burkina Faso

Exceptional water deficits are expected to diminish considerably, leaving severe conditions across the north but relatively moderate conditions in the south. Some intense deficits are forecast for western Mauritania, southwestern Burkina Faso, the Chinko Nature Reserve in Central African Republic, southwestern Namibia, and Cape Town, South Africa. Surpluses are forecast for southeastern Sudan, northeastern South Sudan, the Niger Delta, Gabon, north-central Uganda, eastern Tanzania, Okavango Delta in Botswana, and the central border between Botswana and South Africa.

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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