Robust Response of Streamflow Drought to Different Timescales of Meteorological Drought in Xiangjiang River Basin of China

Table 2

Classification of drought intensity.

SPEI/SRI value	Drought intensity
(−1.00, −0.00]	Mild drought
(−1.50, −1.00]	Moderate drought
(−2.00, −1.50]	Severe drought
(−∞, −2.00]	Extreme drought