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National Agricultural Drought Assessment and Monitoring System (NADAMS), provides near real-time information on prevalence, severity level and persistence of agricultural drought at state/ district/sub-district level. It covers 14 states of India, which are predominantly agriculture based and prone to drought situation. Agricultural conditions are monitored at state/district level using daily NOAA AVHRR data for 9 states. AWiFS (Advanced Wide Field Sensor) of Resourcesat (56 m resolution) is used for detailed assessment of agricultural drought at district and sub district level in five states.

Agricultural drought assessment is carried out with multiple indices/data as indicated below:

  • Normalized Difference Vegetation Index (NDVI) derived from NOAA AVHRR data (1km x 1km)
  • Normalized Difference Wetness Index (NDWI) derived from MODIS (250 m) data
  • Shortwave Angle Slope Index (SASI) derived from MODIS (500m) data
  • Soil Moisture Index (derived from soil water balance approach using daily PET & Rainfall values)
  • District-level Weekly Rainfall data from IMD– Rainfall Deviation, Number of dry weeks
  • Taluk/Mandal Level Monthly Rainfall data from State Agriculture Departments
  • Crop sown area collected from various states
  • District level Irrigations Statistics
  • For NADAMS Drought reports, click here
  • Click here to login and enter data.