Drought Index

A drought index is a measurement used to assess how dry an area is by analyzing factors like rainfall, soil moisture, and water supply levels. It helps determine the severity of drought conditions—whether there's only a slight shortage or a severe scarcity threatening agriculture, ecosystems, and human water use. These indices enable scientists and policymakers to monitor, compare, and respond to drought situations more effectively, guiding water management and disaster preparedness efforts. In essence, a drought index provides a standardized way to understand and quantify dryness across different regions.