NDMC Monitoring Tools
The National Drought Mitigation Center produces drought monitoring tools and information to help people assess drought severity and impacts:
Download the program to calculate the Standardized Precipitation Index.
The Drought Risk Atlas helps put drought in historic context.
Comparisons of drought indices
Learn about pros and cons of different drought indicators. Read the International Drought Management Program's in-depth comparison of drought indices released in 2016 that explains how various indices are calculated, or an older comparison by the NDMC.
Drought monitoring resources at a national scale are available from a variety of agencies and organizations. The NDMC has compiled an extensive set of resources related to drought indicators, remote sensing, forecasts & advisories, water resources, and data. Additional information can be found on the National Integrated Drought Information System (NIDIS) web portal.
Featured Monitoring Tools
The international drought community produces global-scale and country-specific drought monitoring tools and information. The NDMC has collected resources related to international drought indicators, remote sensing, forecasts and advisories, water resources, and data.