White House: 17 Western States Face New Threats to Water Supplies From Climate Change
The report, which responds to requirements under the SECURE Water Act of 2009, shows several increased risks to western U.S. water resources during the 21st century.
According to the report, specific projections include:
- a temperature increase of 5-7 degrees Fahrenheit by the end of the century;
- A precipitation increase over the northwestern and north-central portions of the western U.S. and a decrease over the southwestern and south-central areas;
- A decrease for almost all of the April 1st snowpack, a standard benchmark measurement used to project river basin runoff; and
- a 7 to 27 percent decrease in April to July stream flow in several river basins, including the Colorado, the Rio Grande, and the San Joaquin.
The Interior Department released the report on the same day as the first ever White House Summit on Water, held in observance of World Water Day.
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