Survey of Irrigation Organizations (SIO) regions

U.S. map showing Northwest, Pacific, Eastern Rockies, Southwest, High Plains, and Southeast regions included in Survey of Irrigation Organizations.

According to the USDA’s 2019 Survey of Irrigation Organizations, irrigation water delivery organizations in the western United States managed about 70 percent of water withdrawn for irrigation and almost 60 percent of water withdrawn for agricultural, commercial, industrial, and municipal uses in an average year.

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