National Water
Availability Assessment

The US Geological Survey (USGS) National Water Availability Assessment is a comprehensive, integrated scientific assessment of water availability in the U.S. The first nationwide assessment of water availability released since 1978, this assessment is the first of its kind to integrate water quantity, quality, and use to better understand water availability. The assessment uses state-of-the-art models to fill in the data gaps between water monitoring stations, and improved integration of water quantity, quality, and use allows water resource managers and decision makers to assess water availability more comprehensively. These capabilities enable a new evaluation of the balance between natural water supply and water demand, providing new insight on areas of the U.S. with a potential supply-use imbalance. 

National Water Availability Assessment resources are available

 

Questions?

  • Contact for questions about the National Water Availability Assessment Data Companion – nwdc@usgs.gov
 

Let’s keep in touch

  • If you’re interested in receiving future updates about the National Water Availability Assessment, including notice of when new data are added to the Data Companion, please consider subscribing to the USGS newsletter. Click this link and subscribe to “Water Availability”.
  • We’re happy to hear your feedback about this week’s presentation! What did you like? What would be more useful in the future? Please let us know.
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