A megadrought is an extended drought.
It lasts two decades or more. Megadroughts in the past were linked with La Niña conditions lasting for many years.
The term megadrought generally refers to the length of a drought, not its intensity. Multiyear droughts lasting one decade or less, like the Dust Bowl drought of the 1930s, are not a megadrought though they lasted a long time.
Megadroughts have caused people to move away from the drought-affected areas. One example is Ancestral Puebloans in the Southwestern United States.
This article uses material from the Wikipedia Simple English article Megadrought, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). Content is available under CC BY-SA 4.0 unless otherwise noted. Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki Simple English (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.