Though the extent of water deficits in South America is expected to shrink March through May, deficits are forecast in central and eastern states of Brazil, western French Guiana into eastern Suriname, Bolivia, Chile, and coastal Peru. Surpluses are forecast in Paraguay, in a line down western Argentina, in central Buenos Aires Province (Argentina), in Rio Grande do Sul and Paraná (Brazil), northern Peru, northern Guyana, Suriname, and parts of Ecuador. From June through August deficits are forecast to persist across Brazil’s mid-section and emerge in Piauí and across northern Brazil. Deficits are also forecast for Bolivia, Colombia, Venezuela, Guyana, Suriname, French Guiana, coastal Peru, and northern Chile. Surpluses will persist in aforementioned areas of Paraguay and Argentina.
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Regions likely to have significant water deficits for the 12-month period from December 2016 through November 2017 include: Arkansas, Quebec, Brazil, Finland, Denmark, Libya, Niger, Gabon, Madagascar, Saudi Arabia, Yemen, northern Russia, Inner Mongolia, Thailand, western Cambodia, Papua New Guinea, and eastern Australia. Water surpluses are forecast for: Idaho, Central California, southwestern Zambia, the Okavango Delta in Botswana, northeastern Afghanistan, and between the Irtysh and Yenisei Rivers in Russia. This Watch List is based on ISciences Water Security Indicator Model (WSIM) Global Water Monitor and Forecast issued 8 March 2017.