The Great Vermont Flood of 1927 was a major flooding event in Vermont which occurred November 2-4, 1927. Following a very wet October, record levels of rainfall were reached in November. The U.S. Geological Survey estimated 53% of the state received more than six inches of rain, with the greatest recorded amount being 9.86 inches in Somerset, Vermont, caused rivers throughout the state to flood. The flood is considered the worst flood in Vermont, with the only comparison being the 2011 Hurricane Irene.
The flood destroyed 1285 bridges, killed at least 84 people, and destroyed many buildings and infrastructure. Environmental historians attribute a number of possible causes for the extreme flooding, including deforestation, saturation of the soil, and the lack of living greenery because of the fall season.