North American Drought Monitor

Welcome to the North American Drought Monitor (NADM) supplemental website. This website provides additional maps and statistics for the NADM. The NADM is a cooperative effort between drought experts in Canada, Mexico and the United States to monitor drought across the continent on an ongoing basis.

This a supplemental website for the North American Drought Monitor. Please visit the official North American Drought Monitor website. Other data for North America can also be found at

Map for October 31, 2021



  • Trevor Hadwen
  • Alyssa Klein


  • Minerva Lopez
  • Yenifeer Loranca


  • Richard Heim*
  • Adam Hartman

* Responsible for collecting analysts' input and assembling the NA-DM map

Map Download

Current Map:    Download pngDownload pdfDownload jpg

Previous Map:    Download pngDownload pdfDownload jpg

Intensity and Impacts

  • None
  • D0 (Abnormally Dry)
  • D1 (Moderate Drought)
  • D2 (Severe Drought)
  • D3 (Extreme Drought)
  • D4 (Exceptional Drought)
  • No Data


  • - Delineates dominant impacts
  • S - Short-term impacts, typically less than 6 months (agriculture, grasslands)
  • L - Long-term impacts, typically greater than 6 months (hydrology, ecology)
  • SL - Short- and long-term impacts