Data are not available for Puerto Rico, Alaska, and the Pacific Basin. NRI maps reflect national patterns rather than site- specific information. Noncultivated cropland includes permanent hayland and horticultural cropland. Sub- surface irrigation pipelines or ditches. Land that shows evidence of being irrigated during the year of the inventory or during two or more years out of the last four years.
Water is supplied to crops by ditches, pipes, or other conduits.
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