The valley of the Genesee River is wide and fertile, with some of the best agricultural land in New York, but it was very prone to flooding, and Geneseo suffered several bad floods until the United States Army Corps of Engineers' construction of the Mount Morris Dam upstream of the community in the 1950s. Agriculture is now a large contributor to Geneseo's economy. Geneseo is also used by many as a bedroom community for jobs in Rochester, to the north. The village of Geneseo is governed by a mayor and four trustees.