The Imperial Valley is the largest alfalfa hay-growing region in the world. Around 200,000 acres were planted to this crop in 1998. The Valley's Imperial Irrigation District is the largest water distribution operation in the United States, irrigating more than 500,000 acres annually.
The Imperial Valley ranks in the top 10 agricultural counties of the United States. The Imperial Valley is the largest year-round irrigated agricultural area in North America.