What is the Dust Bowl?

The Dust Bowl was a region of the southern Great Plains devastated by severe drought, dust storms, and ecological catastrophe during the 1930s, affecting roughly 100 million acres in the panhandles of Texas and Oklahoma plus adjacent parts of New Mexico, Colorado, and Kansas. The disaster combined natural drought with human-caused soil destruction from intensive plowing of fragile prairie grasslands and contributed to one of the largest internal migrations in American history.

The Great Plains had been settled rapidly after the Homestead Act of May 20, 1862 and the Transcontinental Railroad of 1869. The Enlarged Homestead Act of February 19, 1909 increased the maximum claim to 320 acres for semi-arid lands, drawing settlers to the southern Plains during a relatively wet period. Farmers plowed deeper and broader prairies than ever before, often without rotating crops or maintaining soil-protecting plants. By the late 1920s about 33 million acres of native prairie had been broken open.

Wheat prices, kept artificially high during World War I, collapsed in the 1920s and 1930s, prompting farmers to plow even more land in attempts to make up income with volume. Then drought struck. The 1930s were the driest decade in the historical record for the southern Plains, with severe drought from 1930 to 1936 and again in 1939 to 1940. Without grass roots to hold the soil, the wind picked up topsoil in massive dust storms.

The largest storm, Black Sunday on April 14, 1935, blocked the sun completely across western Kansas, the Oklahoma Panhandle, and the Texas Panhandle, with dust reaching as far east as Washington, D.C. and even Atlantic shipping. About 850 million tons of topsoil blew away during the decade.

About 2.5 million people left the Dust Bowl region between 1930 and 1940, the largest internal migration in American history to that point. Many headed for California, where they were called Okies regardless of their actual origins. They faced harsh conditions in California migrant camps, conditions that John Steinbeck dramatized in his 1939 novel The Grapes of Wrath. Photojournalist Dorothea Lange's 1936 photograph "Migrant Mother" of Florence Owens Thompson became one of the iconic images of the era.

Federal response included the Soil Conservation Service (now the Natural Resources Conservation Service) established in 1935, the Shelterbelt Project of 1934 to 1942 that planted about 220 million trees as windbreaks, the Resettlement Administration of 1935, and the Civilian Conservation Corps that worked on soil conservation. The Dust Bowl ended with returning rains in 1939 and 1940, but lessons were lasting: contour plowing, crop rotation, cover cropping, and reduced cultivation became standard agricultural practices. The region remains environmentally fragile.