Response of Hydrological Drought to Meteorological Drought under the Influence of Large Reservoir

Table 4

Correlations between SSI and SPI in typical severe drought years.

Period	⁢No reservoir effect (1960–1982)			Reservoir effect (1983–2010)
Drought year	1963	1971	1977	1983	1987	1991	2003	2009
Pearson correlation	0.862	0.834	0.778	0.831	0.568	0.784	0.716	0.395