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North American Drought Monitor (NADM)

Associated Agencies

National Oceanic and Atmospheric Administration (NOAA), National Drought Mitigation Center (NDMC), U.S. Department of Agriculture (USDA), Environment Canada, Agriculture and Agrifood Canada, National Meteorological Service of Mexico (SMN – Servicio Meteorologico Nacional), Mexican National Commission of Water (Comisión Nacional del Agua)

The North America Drought Monitor (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. The program was initiated at a three-day workshop in late April 2002 and is part of a larger effort to improve the monitoring of climate extremes on the continent. The NADM is based on the highly successful U.S. Drought Monitor (USDM), and as such, is being developed to provide an ongoing comprehensive and integrated assessment of drought throughout all three countries.


North American Drought Monitor Website: Main NADM website with interactive maps, including maps showing transboundary ecoregions and river basins

Access from NOAA/NCEI: Product and program info

Access from NDMC: Maps and statistics

NADM Shapefiles: Download NADM shapefiles (in ZIP folders)