India Drought Monitor

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Data Download

All India Drought Monitor products are provided as plain-text gridded files. Each line is latitude longitude value on a 0.25° grid. The Combined Drought Index also has a weekly time series back to July 2021.

Current grids

ProductDescriptionFile
Combined Drought IndexLatest weekly CDI (drier < 0)Current_CDI.txt
CDI forecast — 7 dayExpected CDI one week aheadFuture_CDI_7day.txt
CDI forecast — 15 dayExpected CDI two weeks aheadFuture_CDI_15day.txt
CDI forecast — 30 dayExpected CDI one month aheadFuture_CDI_30day.txt

Standardised indices

IndexMeaningAccumulation windows
SPIStandardised Precipitation Index 1mo · 3mo · 6mo · 12mo
SRIStandardised Runoff Index 1mo · 3mo · 6mo · 12mo
SSMIStandardised Soil Moisture Index 1mo · 3mo · 6mo

Time series

ProductDescriptionFile
National drought areaWeekly % of India in each class (year, month, day, then class shares)India_Drought_Area_Timeseries.txt
Weekly CDI framesOne grid per week, data/Drough_TS/CDI_YYYYMMDD.txtlatest week

Boundaries

FileDescription
state_vector_boundaries.jsonState / UT polygon paths with names and ids
states_with_boundaries.csvRasterised state-id grid (0.0625°)
india_mainland_boundary.csvNational outline
Please cite the India Drought Monitor and the Water and Climate Lab, IIT Gandhinagar, when using these data in publications.