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Data & Maps

Drought Risk Atlas

Associated Agencies

National Drought Mitigation Center, U.S. Department of Agriculture, National Oceanic and Atmospheric Administration

The Drought Risk Atlas provides historic data about drought through 2017 for weather stations across the United States that have at least 40 years of records. Users can select a station and view data for several drought indices over time, frequency statistics for drought thresholds, drought period information, and index comparisons. 

Where do these data come from?

The Drought Risk Atlas uses precipitation records from the National Weather Service Cooperative data (COOP) that is archived by the Regional Climate Centers (RCC) in their Applied Climate Information System (ACIS).

How to

What can I do with these data?

You can explore drought history at thousands of stations across the contiguous U.S. Values for several drought indices are pre-computed, and data are available for download. Within the Map Viewer, you can view U.S. Drought Monitor or Standardized Precipitation Index maps

How do I use the U.S. Drought Atlas site?

  • See Help for the Map Viewer and the Data Tool on the Atlas site.


Drought Risk Atlas:  The home page for the Drought Risk Atlas.

Map Viewer: Access historical maps of drought.

Time Series Visualization and Data Download:  Time series plots of historical drought and data downloads for specific stations.