Widespread water surpluses observed in prior months will shrink through November. However, a broad column of surplus is forecast from southern North Dakota reaching into north-central Texas with intense anomalies in South Dakota. Other areas of surplus include eastern Nevada into western Utah, Wyoming, and California from San Francisco through the southwest. A pocket of exceptional deficit is expected in the central Everglades.
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Through September, water surpluses along the Mississippi River, its tributaries, and states on the western bank of the river will moderate, but significant surpluses are forecast in a column from South Dakota through central and eastern Texas and will include extreme to exceptional anomalies in many areas, particularly South Dakota. Areas of deficit include the Pacific Northwest, northwestern Minnesota, the western Upper Peninsula of Michigan, and along the Atlantic coast in North Carolina.
The forecast through August 2019 indicates persistent water surpluses in a wide path through the center of the country in the Mississippi River Basin and well into the Missouri, Arkansas, and Red River Basins, including exceptional anomalies in South Dakota. Surpluses of varying intensity are expected in the Rockies, central Arizona, California, Oregon, and in the Northeast. Deficits are forecast for pockets of Washington, North Dakota, Wisconsin, and southeastern states.
Regions forecast to have significant water deficits for the 12-month period from March 2019 through February 2020 include: Suriname, French Guiana, Finland, Estonia, Latvia, Egypt, Somalia, Angola, and Namibia. Areas with a forecast of significant water surplus include: United States, Paraguay, Syria, northern Iraq, western Iran, Afghanistan, Tanzania, and southeastern China. This Watch List is based on ISciences Water Security Indicator Model v2 (WSIMv2) run on 10 June 2019
The forecast through July indicates widespread water surpluses of varying intensity a vast area on either side of the Mississippi River. Exceptional anomalies are forecast around Sioux Falls, and along the Mississippi River on either side of Memphis and from Louisiana to the Gulf. Surpluses will increase in the Rockies and shrink slightly and moderate in California. In the Pacific Northwest, deficits will shrink in Washington; Oregon will transition from deficit to moderate surplus.
Most notable in the forecast through May is the absence of widespread, intense water surpluses observed in the East in prior months and the emergence of surpluses in the West. Surpluses will shrink and downgrade in the center of the country but remain widespread in a broad path from southern Minnesota to the Gulf of Mexico and will be intense in Kansas. Moderate surpluses will cover much of California, and many Rocky Mountain States will transition from deficit to surplus.
Most notable in the forecast through April is the absence of widespread, intense water surpluses observed in the East in prior months. Surpluses will, however, persist in a massive path down the center of the country from Wisconsin through Texas, and moderate surpluses will emerge in the Rocky Mountains, in California from San Francisco Bay to the southern border, and along the Missouri and Colorado Rivers. Surpluses will be exceptional in central Kansas, on the Arkansas River, and in central Texas.
Regions forecast to have significant water deficits for the 12-month period from November 2018 through October 2019 include: Quebec (Canada), Finland, Latvia, Somalia, Angola, Iran, Thailand, Cambodia, and Australia. Areas with a forecast of significant water surplus include: Kansas and Texas (US), Paraguay, Uruguay, Syria, Tanzania, and China. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 8 February 2019.
The forecast through November indicates that water deficits will downgrade considerably overall leaving mild to moderate deficits, but deficits will be intense along the Arkansas River through Kansas and Colorado, western Colorado, northeastern Utah, along the Canadian River through Oklahoma and the Texas Panhandle, and in the US Northeast. Areas of surplus include: Montana, the Black Hills of South Dakota, northern Nebraska, Iowa, Wisconsin, and eastern Pennsylvania.
Regions forecast to have significant water deficits for the 12-month period from June 2018 through May 2019 include: the US Pacific Northwest, southern Mexico, Brazil, Chile, Central and Northern Europe, northern Africa, the Middle East, Afghanistan, and southern India. Areas with a forecast of significant water surplus include: Tanzania, Kenya, Bangladesh, Myanmar, Laos, and Heilongjiang, China. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 10 September 2018.