*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

Snake River

United States: Exceptional water deficits to retreat in Northern Plains States

United States: Exceptional water deficits to retreat in Northern Plains States

After July the Northern Plains States should see a significant retreat of exceptional water deficits. Surpluses will persist in the Gulf region, diminish in the Great Lakes States, and transition to mild deficits in Virginia and North Carolina. After October moderate water surpluses will re-emerge in most of the Great Lakes States and in the Ohio River Valley, and pockets of surplus will continue to emerge in Idaho and surrounding states. Deficits in the southern states of the East Coast are expected to ratchet up slightly to moderate intensity and emerge in Florida.

United States: Exceptional water deficits in AR, surpluses in ID, NV

United States: Exceptional water deficits in AR, surpluses in ID, NV

The extent of exceptional water deficits from the Ohio River Valley to the Gulf is expected to recede but exceptional deficits will persist in eastern Oklahoma, northern Arkansas, Missouri, and west-central Illinois. Widespread surpluses will continue to emerge in the West with particular intensity in Idaho and northern Nevada. Moderate surpluses are forecast for much of California, particularly Central California.

United States: Water deficits MO, OK, AR; surplus ID, NV, UT

United States: Water deficits MO, OK, AR; surplus ID, NV, UT

Water deficits are forecast for Missouri, Oklahoma, and Arkansas, as well as in a line extending northeast from Mississippi through Alabama, northern Georgia, western South Carolina, western North Carolina, Virginia, Maryland, and Pennsylvania. Surpluses are expected in southern Idaho, northeastern Nevada, and northwestern Utah.

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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