The Most Severe Droughts in Recorded History
The record of historic drought events shows how past water deficits shaped economies, migration, and infrastructure choices. Data-driven comparison helps decision-makers weigh risk and plan supply systems. Short, consistent indices such as SPI, SPEI, SSI and SGI and the operational D0–D4 U.S. Drought Monitor anchor cross-region analysis. Notable examples include the 1934 episode that affected … Read more