| Bit No. |
Flag Value |
Description |
Unit |
Status |
| 0 |
|
Standard Precipitation Index (SPI) |
dimensionless |
Operational |
| 1 |
|
Standardized Precipitation Evapotranspiration Index (SPEI) |
dimensionless |
Operational |
| 2 |
|
Standardized Streamflow Index (SSFI) |
dimensionless |
Operational |
| 3 |
|
Standardized Reservoir Supply Index (SRSI) |
dimensionless |
Operational |
| 4 |
|
Standardized Water-level Index (SWI) |
dimensionless |
Operational |
| 5 |
|
Standardized Snowmelt and Rain Index (SMRI) |
dimensionless |
Operational |
| 6 |
|
Streamflow Drought Index (SDI) |
dimensionless |
Operational |
| 7-191 |
|
Reserved |
|
Operational |
| 192-254 |
|
Reserved for local use |
|
Operational |
| 255 |
|
Missing |
|
Operational |