*Water Watch Lists
ISciences staff
ISciences Worldwide Water Watch List May 2024

The forecast for May 2024 expects significant water deficits for the 12-month period of February 2024 through January 2025 in South America, Africa, and Canada. Areas expected to experience surplus include central to eastern Africa, northern Australia, Europe, and Southeast Asia.

ISciences Worldwide Water Watch List May 2024
Africa
ISciences staff
Africa: Surplus expands throughout Sahel, E ...

The forecast anticipates exceptional deficits to continue in northern and northwestern African countries, as well as some central and southern countries. Intense surpluses are expected to emerge in areas throughout the Sahel.

Africa: Surplus expands throughout Sahel, E Africa
Australia & New Zealand
ISciences staff
Australia & New Zealand: Surplus persists ...

The forecast indicates that intense surplus will occur in most northern and central regions of Australia, with exceptional deficits diminishing in portions of the country near its western coast. Exceptional deficits are expected to emerge in Tasmania, as well as in pockets across New Zealand. 

Australia & New Zealand: Surplus persists in N, SE Australia
East Asia
ISciences staff
East Asia: Deficits continue in N, S, and NW ...

The forecast indicates that exceptional deficits will mostly dissipate in northeastern China, but continue in northern, southern, and northwestern portions of the country. Exceptional surplus is expected to diminish in southwestern China, though moderate to severe surpluses may continue in eastern regions of the country. 

East Asia: Deficits continue in N, S, and NW China
Southeast Asia & Pacific
ISciences staff
Southeast Asia and the Pacific: Widespread ...

The forecast indicates that exceptional deficits in Mainland Southeast Asia will persist but lessen in size, while intense surpluses will expand throughout Maritime Southeast Asia. 

Southeast Asia and the Pacific: Widespread surplus throughout Maritime Southeast Asia

East Asia: Vast surpluses forecast for Upper, Middle Yangtze, esp Hanjiang River

East Asia: Vast surpluses forecast for Upper, Middle Yangtze, esp Hanjiang River

Widespread intense deficits will emerge in Zhejiang, Fujian, Guangdong, and Taiwan. Widespread intense surpluses are forecast for a vast stretch of the Upper and Middle Yangtze River, with exceptional surpluses in the Han River watershed. Aforementioned deficits may persist through March and surpluses may persist longer. Severe surpluses will continue to emerge along the Middle and Lower Yellow River through December. Surpluses in the western Pearl River watershed and around the Gulf of Tonkin are forecast to diminish slowly through March. Intense surpluses will continue to emerge in eastern Qinghai while intense deficits are forecast in the west.

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.

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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