The forecast through June indicates that water deficits will downgrade in the southern half of the continent and its midsection but will intensify across the north. In the Horn, deficits will downgrade but exceptional deficits are forecast for Somalia from the Jubba River past the Shabelle River. Intense deficits are expected in Zambia, Zimbabwe, southwestern Angola, and the Okavango Delta. Areas of surplus include western Tanzania and south-central Chad.
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The forecast through May indicates that water deficits will downgrade, with moderate anomalies throughout most of the continent, some pockets of greater intensity, and surpluses in Tanzania. Exceptional deficits are forecast in the Ethiopian Highlands. Other areas of significant deficit include Equatorial Guinea, Lesotho, Guinea-Bissau, central Republic of the Congo, eastern Angola, western Zambia and central Zambia and along the Zambezi River, and northern Zimbabwe.
The forecast through March indicates that water deficits will persist on much of the continent, but the extent of exceptional deficits will diminish considerably. Moderate to severe deficits are forecast across northern and central Africa along with pockets of exceptional deficit. Anomalies will be intense in Nigeria, Sudan, Ethiopia, Somalia, Cameroon, Equatorial Guinea, Gabon, and Lesotho. Mild to moderate deficits are forecast for southern Africa. Intense surpluses will persist in western Tanzania.
The forecast through February indicates that water deficits will downgrade considerably. However, areas with notably intense conditions include western Ethiopia; pockets of northern Somalia, Nigeria, and southwestern Cameroon; southwestern Angola into Namibia; and, Lesotho and the Orange River region of Northern Cape, South Africa. Surpluses are forecast for Tanzania, southern Congo into western DRC and northern Angola, and south-central Chad.
The forecast through January indicates that exceptional deficits in Africa will shrink considerably, but moderate to severe deficits are forecast across much of the north. Areas of intense deficit include southeastern Algeria; the Nile River, the White Nile and parts of the Blue Nile; northwestern and southeastern Nigeria; western Ethiopia; and northern Democratic Republic of the Congo into Central African Republic. Areas of surpluses include south-central Chad and Liberia.
The forecast through December indicates that intense deficits will shrink considerably across northern Africa but emerge across the southern Sahara and into the Sahel. Intense deficits are forecast for the Nile River and western Ethiopia. Mild deficits are forecast for much of Africa’s southern half. Areas of surplus include southern Mali, Sierra Leone, Liberia, Burkina Faso, Ghana, coastal and northeastern Nigeria, south-central Chad, Republic of the Congo, Tanzania, and southern Kenya.
Regions forecast to have significant water deficits for the 12-month period from July 2018 through June 2019 include: Germany, Finland, southern Iraq, western Cambodia, Mato Grosso and São Paulo (Brazil), Karachi (Pakistan), and southeastern Australia. Areas with a forecast of significant water surplus include: Pennsylvania and Iowa (US), Uruguay, Myanmar, Vietnam, and Heilongjiang (China). This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 11 October 2018.
Though intense water deficits will persist in northern Africa over the next few months, exceptional deficits will shrink in the north and along the Red Sea, and will nearly disappear from the rest of the continent. Intense deficits will persist in Zambia’s Kafue River watershed. Areas of surplus include: Tanzania, Kenya, eastern Uganda, some countries along the northern Gulf of Guinea, central Chad, and northwestern Zambia. Surpluses will be intense in East Africa.
Exceptional water deficits will shrink and downgrade across North Africa and along the Red Sea but deficits will remain widespread and intense. Intense deficits are also forecast for western Ethiopia, southern Gabon, northwestern Botswana, central Zambia, and western Madagascar. Exceptional surpluses will persist in East Africa; extreme surpluses are forecast for the conjoined borders of Cameroon, Central African Republic, and Republic of the Congo; and surpluses of lesser intensity are forecast for westernmost Democratic Republic of the Congo.
Exceptional water deficits in North Africa will diminish but persist, and severe deficits are forecast in Gabon and in Nigeria south of the Benue River. Deficits will also persist in western Zambia and are expected to be extreme on the Kafue River. Moderate to exceptional deficits will emerge in central Botswana. Exceptional surpluses will persist in Tanzania, Kenya, and northern Uganda, but diminish somewhat in northern Madagascar. Surpluses east of Kinshasa in Democratic Republic of the Congo are forecast to increase in both extent and intensity, becoming severe.