The forecast through February indicates that water deficits will persist in western Cambodia and Thailand, emerge in the Philippines, and increase in Papua New Guinea. Deficits will be exceptional in Cambodia. Areas of surpluses include: northern Laos, northern Vietnam and parts of the Central Highlands, Malaysia, Sumatra, and northwestern Borneo. Surpluses may be intense in Riau and Jambi, Sumatra, and along the Kapuas River in Borneo.
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Through October, water surpluses will persist with intensity in western Myanmar, retreat from northwestern Thailand, downgrade slightly in Laos and Vietnam, shrink considerably in the Philippines, and nearly disappear in Malaysia and Indonesia. Exceptional surpluses are forecast along the Mekong River. Deficits north of Tonle Sap in Cambodia will intensify. Deficits are also forecast for the Malay Peninsula, western Indonesian Borneo, southern Sumatra, Java, Timor-Leste, and Papua New Guinea.
The forecast indicates a transition away from water surplus to deficit. Deficits are forecast for mainland Southeast Asia, Peninsular Malaysia, northern Sumatra, and Luzon and Mindanao in the Philippines; deficits may be exceptional in Peninsular Malaysia. Exceptional deficits in Cambodia will shrink considerably but persist in a pocket northeast of Tonlé Sap. Severe deficits are forecast for Vietnam’s Mekong Delta region. Surpluses are forecast for central Philippines. After June, anomalies in the region will downgrade though severe deficits will continue in Peninsular Malaysia.
Cambodia continues to stand out through May in Southeast Asia with exceptional water deficit in the west. Surpluses are forecast for much of the rest of Southeast Asia, the Philippines, and Malaysia, and may be especially intense in western Myanmar, around the Gulf of Tonkin, central Philippines, and Brunei. Deficits will emerge in the southern tip of Sumatra and into Java, but are expected to nearly disappear in Papua New Guinea, persisting mainly around the Gulf of Papua. After May, surpluses in the region will retreat and Cambodia will return to near-normal conditions.
Though water deficits persist in western Cambodia and Papua New Guinea, surpluses have dominated the rest of the region but will gradually transition to moderate deficit. Through March, exceptional surpluses are forecast in Myanmar, northern Laos, and northern Vietnam; less intense surpluses in southern Laos, eastern Cambodia, southern Vietnam, the Philippines, and Sumatra; and exceptional deficits in western Cambodia and northern Papua New Guinea. Mild deficits will emerge in Indonesia, and continue to emerge overall after March.
From April through June water deficits are forecast to emerge on Java, southern Sumatra, and southern Borneo, but will recede in Cambodia except for a pocket of exceptional deficits northeast of Tonlé Sap. Surpluses are forecast for central Vietnam, the Malay Peninsula, northern Sumatra, northeast Borneo, and Mindanao. After June, deficits are forecast for most of the region, with severe to exceptional deficits in Malaysia, Indonesia, Papua New Guinea, and eastern Mindanao.
Regions likely to have significant water deficits for the 12-month period from January 2017 through December 2017 include: Arkansas and Florida (US), Quebec (Canada), Brazil, Finland, Estonia, Denmark, Libya, Egypt, Saudi Arabia, Yemen, Tamil Nadu (India), Borneo, and New Guinea. Water surpluses are forecast for: Idaho and the Pacific Northwest (US), southwestern Zambia, the Okavango Delta (Botswana), northeastern Pakistan, between the Irtysh and Tom Rivers (Russia), central Vietnam, and eastern Queensland (Australia). This Watch List is based on ISciences Water Security Indicator Model (WSIM) Global Water Monitor and Forecast issued 7 April 2017.
Water surpluses are forecast for Laos, central Vietnam, and the Malay Peninsula through March. Exceptional deficits will persist in Cambodia near Tonlé Sap Lake during this period. After March, a transition to water deficits in parts of Malaysia, Indonesia, and Papua New Guinea is forecast, and deficits will continue to emerge through September.
Though water surpluses are forecast for many parts of the region through February, exceptional deficits will persist in Cambodia through May. Exceptional surpluses are forecast to persist through February in Laos and in central Vietnam through May. Surpluses of lesser severity are forecast for the next three months in the southern Malay Peninsula, Java, southern Vietnam, and Gorontalo, Indonesia.