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White House: 17 Western States Face New Threats to Water Supplies From Climate Change

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Higher temperatures and changes in precipitation will exacerbate water supply woes in 17 Western states, the Interior Department announced Tuesday with the release of its SECURE Water Act Report.

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.

South Lake Dam with a nearly empty South Lake in the Sierra Nevada in California in 2014. Photo credit: Shutterstock

According to the report, specific projections include:

  • 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.

For a deeper dive: APThe Hill, Think Progress, Phys.org, San Francisco Chronicle, Denver PostYubaNet

For more climate change and clean energy news, you can follow Climate Nexus on Twitter and Facebook, and sign up for daily Hot News.

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