Drought Risk Index (DRI)

This index measures drought risk to the overall population.

Threshold Level Indicators (Deficit Indices)

This index can be used to determine and characterize meteorological, hydrological andagricultural drought hazards.

Standardized Streamflow Index (SSFI)

This index can be used to determine and characterizehydrological drought hazards on a daily and monthly basis. (source WMO and GWP, 2016)

Effective Drought Index (EDI)

This index can be used to determine and characterize meteorological, hydrological, andagricultural drought hazards on a daily basis. (source WMO and GWP, 2016)

Streamflow Drought Index (SDI)

This index can be used to determine and characterizehydrological drought hazards on a monthly basis. (source WMO and GWP, 2016)

Keetch-Byram Drought Index (KBDI)

This index can be used to determine and characterize agricultural drought hazards on a daily basis.(source WMO and GWP, 2016)

Enhanced Vegetation Index (EVI)

This index can be used to determine and characterizeagricultural drought hazards. (source WMO and GWP, 2016)

NOAA Drought Index (NDI)

This index can be used to determine and characterizeagricultural drought hazards on a monthly basis. (source WMO and GWP, 2016)

Palmer Drought Severity Index (PDSI)

This index can be used to determine and characterizemeteorological drought hazards on a monthly basis.

Self-Calibrated Palmer Drought Severity Index (sc-PDSI)

This index can be used to determine and characterize meteorological, hydrological andagricultural drought hazards on a monthly basis. (source WMO and GWP, 2016)