ISciences Worldwide Water Watch List April 2025

ISCIENCES WORLDWIDE WATER WATCH LIST April 2025

This map presents a selection of regions likely to encounter significant water anomalies during the one year period beginning in January 2025 and running through December 2025 using 3 months of observed temperature and precipitation data and 9 months of forecast data.

The synopsis that follows provides highlights of regional water forecasts. Regional details are available in ISciences Global Water Monitor & Forecast Watch List April 15, 2025 (pdf).

United States: Exceptional deficits are expected to be in several areas of the Southwest until June 2025.

Canada: Portions of the West Coast, Prairie Provinces, and Northern Territories regions should anticipate wide deficits until September 2025.

Mexico, Central America, and the Caribbean: Central to south-central regions of Mexico will observe severe to exceptional deficits until December 2025.

South America: Surpluses of severe to exceptional intensity are forecast in portions of the Amazon Rainforest until September 2025.

Europe: Widespread exceptional deficits are expected to linger in areas of northern and eastern Europe until September 2025.

Africa: Surpluses in the Sahel are expected to continue until December 2025 or longer.

Middle East: Exceptional deficits are expected to continue in portions of the Arabian Peninsula until June 2025.

Central Asia and Russia: Exceptional deficits are expected in significant portions of European and northern coastal Russia until September 2025.

South Asia: Surpluses of moderate intensity are expected to continue in much of central India until December 2025.

Southeast Asia and the Pacific: Severe to exceptional deficits are expected in areas of Maritime Southeast Asia until September 2025.

East Asia: Severe to exceptional deficits are anticipated in regions of northwestern China and the Yangtze River Basin until September 2025.

Australia & New Zealand: Severe to exceptional surpluses are expected to occur in Queensland until December 2025.

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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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