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HOME > U.S. Drought > Drought Indices: Standardized Runoff Index (12-Month)

Drought Indices
Standardized Runoff Index
3-Month 6-Month 12-Month
20Jan2024-20Apr2024
Topo Map
12 Month Runoff Index Ensemble
12 Month Runoff Index Mosaic
12 Month Runoff Index NOAH
12 Month Runoff Index SAC
12 Month Runoff Index VIC
Boundaries
Rivers
Legend
               
Notes about this product:
  • Drought classification: D1 -0.8 > SRI > -1.2; D2 -1.3 > SRI > -1.5; D3 -1.6 > SRI > -1.9; and D4 SRI < -2.
  • Data source: North American Land Data Assimilation System (NLDAS)
  • GeoTIFF: Undefined value is -999.
 Related Links:
Contacts: Muthuvel Chelliah (Muthuvel.Chelliah@noaa.gov) & Li Xu (li.xu@noaa.gov)


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