Research Article
Hydrological Drought Assessment of Energy-Based Water Deficit Index (EWDI) at Different Geographical Regions
Table 2
Error matrix result for Korean Peninsula (Hamheung site) during 2001–2010.
| Hamheung | Streamflow | Sum | Drought accuracy (%) | Overall accuracy (%) | Drought | No drought |
| Moderate drought (Streamflowlower quartile = 0.03137 cfs) | ESI | | | | 54/58 = 93.10 | 110/120 = 91.67 | Drought | 54 | 4 | 58 | No drought | 6 | 56 | 62 | Sum | 60 | 60 | 120 | EWDI | | | | 54/57 = 94.74 | 113/120 = 94.17 | Drought | 54 | 3 | 57 | No drought | 4 | 59 | 63 | Sum | 58 | 62 | 120 | SPI-3 | | | | 45/52 = 86.54 | 100/120 = 83.33 | Drought | 45 | 7 | 52 | No drought | 13 | 55 | 68 | Sum | 58 | 62 | 120 | VCI | | | | 35/53 = 66.04 | 85/120 = 70.83 | Drought | 35 | 18 | 53 | No drought | 17 | 50 | 67 | Sum | 52 | 68 | 120 |
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