---
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caption: 'These projections, assuming continued increases in heat-trapping gas emissions (A2 scenario; Ch. 2: Our Changing Climate), illustrate: a) major losses in the water content of the snowpack that fills western rivers (snow water equivalent, or SWE); b) significant reductions in runoff in California, Arizona, and the central Rocky Mountains; and c) reductions in soil moisture across the Southwest. The changes shown are for mid-century (2041-2070) as percentage changes from 1971-2000 conditions (Figure source: Cayan et al. 2013<tbib>59cf5a07-b64b-418c-acc6-73b7ff4d7d7e</tbib>).'
chapter:
  description: ~
  display_name: 'Chapter 3: Water Resources'
  doi: 10.7930/J0G44N6T
  identifier: water-resources
  number: 3
  report_identifier: nca3
  sort_key: 30
  title: Water Resources
  url: http://nca2014.globalchange.gov/report/sectors/water
chapter_identifier: water-resources
cited_by: []
contributors: []
create_dt: 2013-08-01T17:57:00
description: 'These projections, assuming continued increases in heat-trapping gas emissions (A2 scenario; Ch. 2: Our Changing Climate), illustrate: a) major losses in the water content of the snowpack that fills western rivers (snow water equivalent, or SWE); b) significant reductions in runoff in California, Arizona, and the central Rocky Mountains; and c) reductions in soil moisture across the Southwest. The changes shown are for mid-century (2041-2070) as percentage changes from 1971-2000 conditions (Figure source: Cayan et al. 2013<tbib>59cf5a07-b64b-418c-acc6-73b7ff4d7d7e</tbib>).'
display_name: '3.1: Projected Changes in Snow, Runoff, and Soil Moisture'
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images:
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    create_dt: 2013-08-01T17:57:00
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    time_end: 2070-12-31T23:59:59
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references:
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report:
  display_name: 'Climate Change Impacts in the United States: The Third National Climate Assessment'
report_identifier: nca3
source_citation: Cayan et al. 2013
submission_dt: ~
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title: 'Projected Changes in Snow, Runoff, and Soil Moisture'
type: figure
uri: /report/nca3/chapter/water-resources/figure/projected-changes-in-snow-runoff-and-soil-moisture
url: http://nca2014.globalchange.gov/report/sectors/water/graphics/projected-changes-snow-runoff-and-soil-moisture
usage_limits: Copyright protected. Obtain permission from the original figure source.