Hydrological Drought Assessment of Energy-Based Water Deficit Index (EWDI) at Different Geographical Regions

Table 4

Error matrix result for Mongolia (Tsetserleg site) during 2001–2010.

Tsetserleg	Streamflow		Sum	Drought accuracy (%)	Overall accuracy (%)
	Drought	No drought
Moderate drought (Streamflowlower quartile = 0.04314 cfs)
ESI				45/52 = 86.54	100/120 = 83.33
Drought	45	7	52
No drought	13	55	68
Sum	58	62	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				39/56 = 69.64	84/120 = 70.00
Drought	39	17	56
No drought	19	45	64
Sum	58	62	120
VCI				17/50 = 34.00	74/120 = 61.67
Drought	17	33	50
No drought	13	57	70
Sum	30	90	120