What was the Dust Bowl?

The Dust Bowl was a period of severe dust storms across the southern Great Plains, centered on the Oklahoma and Texas panhandles, Kansas, Colorado, and New Mexico, lasting through most of the 1930s. Its cause was a collision of drought with land use. Farmers had plowed up tens of millions of acres of deep-rooted native prairie grass during the wet years and high wheat prices of the 1910s and 1920s, leaving bare soil that had previously been anchored for millennia. When multi-year drought arrived in 1931, the exposed topsoil dried and the wind carried it away in storms that turned day to night and reached as far as Washington and New York.

The human toll was severe. Dust pneumonia killed people and livestock, crops failed repeatedly, and farms were abandoned or foreclosed. Roughly 2.5 million people left the Plains states during the decade, with a substantial share heading to California, where they faced hostility and the conditions John Steinbeck depicted in The Grapes of Wrath. The Okie migration reshaped California's Central Valley and its politics.

The response created institutions that still exist. The Soil Conservation Service, now the Natural Resources Conservation Service, promoted contour plowing, crop rotation, and cover crops, and the federal government planted hundreds of millions of trees in shelterbelts to break the wind. The disaster is now understood as the clearest American example of a human-amplified environmental catastrophe, and the lessons about groundcover and soil management informed agricultural practice worldwide. Research also indicates the same region is vulnerable to similar conditions again, which is why the Dust Bowl figures in discussions of drought and climate resilience.