Canadian Drought Monitor
This series of datasets has been created by AAFC’s National Agroclimate Information Service (NAIS) of the Agro-Climate, Geomatics and Earth Observations (ACGEO) Division of the Science and Technology Branch.
The Canadian Drought Monitor (CDM) is a composite product developed from a wide assortment of information such as the Normalized Difference Vegetation Index (NDVI), streamflow values, Palmer Drought Index, and drought indicators used by the agriculture, forest and water management sectors. Drought prone regions are analyzed based on precipitation, temperature, drought model index maps, and climate data and are interpreted by federal, provincial and academic scientists.
Once a consensus is reached, a monthly map showing drought designations for Canada is digitized.
AAFC’s National Agroclimate Information Service (NAIS) updates this dataset on a monthly basis, usually by the 10th of every month to correspond to the end of the previous month, and subsequent Canadian input into the larger North American Drought Monitor (NA-DM).
The drought areas are classified as follows:
D0 (Abnormally Dry) – represents an event that occurs once every 3-5 years;
D1 (Moderate Drought) – represents an event that occurs every 5-10 years;
D2 (Severe Drought) – represents an event that occurs every 10-20 years;
D3 (Extreme Drought) – represents an event that occurs every 20-25 years; and
D4 (Exceptional Drought) – represents an event that occurs every 50 years.
Impact lines highlight areas that have been physically impacted by drought.
Impact labels specify the longitude and magnitude of impacts.
The impact labels are classified as follows:
S – Short-Term, typically less than 6 months (e.g. agriculture, grasslands).
L – Long-Term, typically more than 6 months (e.g. hydrology, ecology).
- Publisher - Current Organization Name: Agriculture and Agri-Food Canada
- Licence: Open Government Licence - Canada
Data and Resources
Pre-packaged MapsPDFEnglish dataset PDF
GeoJSON files (Bilingual)GEOJSONEnglish French dataset GEOJSON
Monthly Assessments (Map and Narrative)PDFEnglish guide PDF
Monthly Assessments (Map and Narrative)PDFFrench guide PDF
Pre-packaged MapsPDFFrench dataset PDF
Pre-packaged FGDB filesFGDB/GDBNo linguistic content; Not applicable dataset FGDB/GDB
Pre-packaged SHAPE filesSHPNo linguistic content; Not applicable dataset SHP
Pre-packaged GML filesGMLNo linguistic content; Not applicable dataset GML
Data Product SpecificationPDFEnglish guide PDF
Data Product SpecificationPDFFrench guide PDF
Canadian Drought MonitorHTMLEnglish application HTML
Canadian Drought MonitorHTMLFrench application HTML
Monthly areas of drought in CanadaESRI RESTEnglish web_service ESRI REST
Monthly areas of drought in CanadaESRI RESTFrench web_service ESRI REST
Monthly areas of drought in CanadaWMSEnglish web_service WMS
Monthly areas of drought in CanadaWMSFrench web_service WMS
|Canadian Drought Monitor|
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