Many areas that have a high percentage of irrigated cropland actually have a relatively small number of cropland acres. A map showing irrigated cropland acreages would show quite a different distribution. When provided, refer to the estimated margins of error to determine suitability of the data for a particular purpose. NRI maps reflect national patterns rather than site-specific information. No data are collected for any year that land is in this ownership.
Water is supplied to crops by ditches, pipes, or other conduits.
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